feat: 增加设备丢失自恢复机制

增加音频设备丢失自恢复机制，完善视频设备丢失自恢复机制

降级部分日志级别，GOSTC key打印脱敏

代码格式化

src/audio/capture.rs

@@ -128,7 +128,7 @@ impl AudioCapturer {
             return Ok(());
         }
 
-        info!(
+        debug!(
             "Starting audio capture on {} at {}Hz {}ch",
             self.config.device_name, self.config.sample_rate, self.config.channels
         );
@@ -243,7 +243,7 @@ fn run_capture(
             actual_ch
         )));
     }
-    info!("Audio capture: 48000 Hz, 2 ch");
+    debug!("Audio capture: 48000 Hz, 2 ch");
 
     pcm.prepare()
         .map_err(|e| AppError::AudioError(format!("Failed to prepare PCM: {}", e)))?;
@@ -307,11 +307,14 @@ fn run_capture(
             }
             Err(e) => {
                 let desc = e.to_string();
-                if desc.contains("EPIPE") || desc.contains("Broken pipe") {
+                if is_device_lost_error(&desc) {
+                    return Err(AppError::AudioError(format!(
+                        "Audio device lost while reading {}: {}",
+                        config.device_name, e
+                    )));
+                } else if desc.contains("EPIPE") || desc.contains("Broken pipe") {
                     warn_throttled!(log_throttler, "buffer_overrun", "Audio buffer overrun");
                     let _ = pcm.prepare();
-                } else if desc.contains("No such device") || desc.contains("ENODEV") {
-                    error_throttled!(log_throttler, "no_device", "Audio read error: {}", e);
                 } else {
                     error_throttled!(log_throttler, "read_error", "Audio read error: {}", e);
                 }
@@ -322,3 +325,10 @@ fn run_capture(
     info!("Audio capture stopped");
     Ok(())
 }
+
+fn is_device_lost_error(desc: &str) -> bool {
+    desc.contains("No such device")
+        || desc.contains("ENODEV")
+        || desc.contains("ENXIO")
+        || desc.contains("ESHUTDOWN")
+}

src/audio/controller.rs

@@ -2,19 +2,26 @@
 
 use serde::{Deserialize, Serialize};
 use std::str::FromStr;
+use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
+use std::time::Duration;
 use tokio::sync::RwLock;
-use tracing::info;
+use tracing::{debug, info, warn};
 
 use super::capture::AudioConfig;
 use super::device::{
-    enumerate_audio_devices_with_current, find_best_audio_device, AudioDeviceInfo,
+    enumerate_audio_devices, enumerate_audio_devices_with_current, find_best_audio_device,
+    AudioDeviceInfo,
 };
 use super::encoder::{OpusConfig, OpusFrame};
 use super::monitor::AudioHealthMonitor;
-use super::streamer::{AudioStreamer, AudioStreamerConfig};
+use super::streamer::{AudioStreamState, AudioStreamer, AudioStreamerConfig};
 use crate::error::{AppError, Result};
-use crate::events::EventBus;
+use crate::events::{EventBus, SystemEvent};
+
+const AUDIO_RECOVERY_RETRY_DELAY: Duration = Duration::from_secs(1);
+
+type AudioRecoveredCallback = Arc<dyn Fn() + Send + Sync>;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
 #[serde(rename_all = "lowercase")]
@@ -97,21 +104,25 @@ pub struct AudioStatus {
 }
 
 pub struct AudioController {
-    config: RwLock<AudioControllerConfig>,
-    streamer: RwLock<Option<Arc<AudioStreamer>>>,
-    devices: RwLock<Vec<AudioDeviceInfo>>,
-    event_bus: RwLock<Option<Arc<EventBus>>>,
+    config: Arc<RwLock<AudioControllerConfig>>,
+    streamer: Arc<RwLock<Option<Arc<AudioStreamer>>>>,
+    devices: Arc<RwLock<Vec<AudioDeviceInfo>>>,
+    event_bus: Arc<RwLock<Option<Arc<EventBus>>>>,
     monitor: Arc<AudioHealthMonitor>,
+    recovery_in_progress: Arc<AtomicBool>,
+    recovered_callback: Arc<RwLock<Option<AudioRecoveredCallback>>>,
 }
 
 impl AudioController {
     pub fn new(config: AudioControllerConfig) -> Self {
         Self {
-            config: RwLock::new(config),
-            streamer: RwLock::new(None),
-            devices: RwLock::new(Vec::new()),
-            event_bus: RwLock::new(None),
+            config: Arc::new(RwLock::new(config)),
+            streamer: Arc::new(RwLock::new(None)),
+            devices: Arc::new(RwLock::new(Vec::new())),
+            event_bus: Arc::new(RwLock::new(None)),
             monitor: Arc::new(AudioHealthMonitor::new()),
+            recovery_in_progress: Arc::new(AtomicBool::new(false)),
+            recovered_callback: Arc::new(RwLock::new(None)),
         }
     }
 
@@ -119,12 +130,302 @@ impl AudioController {
         *self.event_bus.write().await = Some(event_bus);
     }
 
+    pub async fn set_recovered_callback(&self, callback: Arc<dyn Fn() + Send + Sync>) {
+        *self.recovered_callback.write().await = Some(callback);
+    }
+
     async fn mark_device_info_dirty(&self) {
         if let Some(ref bus) = *self.event_bus.read().await {
             bus.mark_device_info_dirty();
         }
     }
 
+    async fn publish_state(
+        event_bus: &Arc<RwLock<Option<Arc<EventBus>>>>,
+        state: &str,
+        device: Option<String>,
+        reason: Option<&str>,
+        next_retry_ms: Option<u64>,
+    ) {
+        if let Some(ref bus) = *event_bus.read().await {
+            bus.publish(SystemEvent::StreamStateChanged {
+                state: state.to_string(),
+                device,
+                reason: reason.map(str::to_string),
+                next_retry_ms,
+            });
+            bus.mark_device_info_dirty();
+        }
+    }
+
+    async fn publish_device_lost(
+        event_bus: &Arc<RwLock<Option<Arc<EventBus>>>>,
+        device: &str,
+        reason: &str,
+    ) {
+        if let Some(ref bus) = *event_bus.read().await {
+            bus.publish(SystemEvent::StreamDeviceLost {
+                device: device.to_string(),
+                reason: reason.to_string(),
+            });
+        }
+    }
+
+    async fn publish_reconnecting(
+        event_bus: &Arc<RwLock<Option<Arc<EventBus>>>>,
+        device: &str,
+        attempt: u32,
+    ) {
+        if let Some(ref bus) = *event_bus.read().await {
+            bus.publish(SystemEvent::StreamReconnecting {
+                device: device.to_string(),
+                attempt,
+            });
+        }
+    }
+
+    async fn publish_recovered(event_bus: &Arc<RwLock<Option<Arc<EventBus>>>>, device: &str) {
+        if let Some(ref bus) = *event_bus.read().await {
+            bus.publish(SystemEvent::StreamRecovered {
+                device: device.to_string(),
+            });
+        }
+    }
+
+    fn select_recovery_device(
+        devices: &[AudioDeviceInfo],
+        preferred: &str,
+    ) -> Option<AudioDeviceInfo> {
+        if !preferred.trim().is_empty() {
+            if let Some(device) = devices.iter().find(|d| d.name == preferred) {
+                return Some(device.clone());
+            }
+        }
+
+        devices
+            .iter()
+            .find(|d| d.is_hdmi && d.sample_rates.contains(&48_000) && d.channels.contains(&2))
+            .or_else(|| {
+                devices
+                    .iter()
+                    .find(|d| d.sample_rates.contains(&48_000) && d.channels.contains(&2))
+            })
+            .or_else(|| devices.first())
+            .cloned()
+    }
+
+    fn spawn_stream_monitor_from_parts(
+        config: Arc<RwLock<AudioControllerConfig>>,
+        streamer_slot: Arc<RwLock<Option<Arc<AudioStreamer>>>>,
+        event_bus: Arc<RwLock<Option<Arc<EventBus>>>>,
+        monitor: Arc<AudioHealthMonitor>,
+        recovery_in_progress: Arc<AtomicBool>,
+        recovered_callback: Arc<RwLock<Option<AudioRecoveredCallback>>>,
+        streamer: Arc<AudioStreamer>,
+        device: String,
+    ) {
+        let mut state_rx = streamer.state_watch();
+
+        tokio::spawn(async move {
+            loop {
+                if state_rx.changed().await.is_err() {
+                    return;
+                }
+
+                if *state_rx.borrow() != AudioStreamState::Error {
+                    continue;
+                }
+
+                {
+                    let current = streamer_slot.read().await;
+                    if !current
+                        .as_ref()
+                        .is_some_and(|current| Arc::ptr_eq(current, &streamer))
+                    {
+                        return;
+                    }
+                }
+
+                let reason = format!("Audio device lost: {}", device);
+                monitor.report_error(&reason, "device_lost").await;
+                Self::spawn_recovery_task_from_parts(
+                    config,
+                    streamer_slot,
+                    event_bus,
+                    monitor,
+                    recovery_in_progress,
+                    recovered_callback,
+                    device,
+                    reason,
+                );
+                return;
+            }
+        });
+    }
+
+    fn spawn_recovery_task_from_parts(
+        config: Arc<RwLock<AudioControllerConfig>>,
+        streamer_slot: Arc<RwLock<Option<Arc<AudioStreamer>>>>,
+        event_bus: Arc<RwLock<Option<Arc<EventBus>>>>,
+        monitor: Arc<AudioHealthMonitor>,
+        recovery_in_progress: Arc<AtomicBool>,
+        recovered_callback: Arc<RwLock<Option<AudioRecoveredCallback>>>,
+        lost_device: String,
+        reason: String,
+    ) {
+        if recovery_in_progress.swap(true, Ordering::SeqCst) {
+            debug!("Audio recovery already in progress");
+            return;
+        }
+
+        tokio::spawn(async move {
+            warn!("Audio recovery started for {}: {}", lost_device, reason);
+            Self::publish_device_lost(&event_bus, &lost_device, &reason).await;
+            Self::publish_state(
+                &event_bus,
+                "device_lost",
+                Some(lost_device.clone()),
+                Some("audio_device_lost"),
+                Some(AUDIO_RECOVERY_RETRY_DELAY.as_millis() as u64),
+            )
+            .await;
+
+            let mut attempt = 0u32;
+
+            loop {
+                if !recovery_in_progress.load(Ordering::SeqCst) {
+                    debug!("Audio recovery canceled");
+                    return;
+                }
+
+                if streamer_slot
+                    .read()
+                    .await
+                    .as_ref()
+                    .is_some_and(|s| s.is_running())
+                {
+                    recovery_in_progress.store(false, Ordering::SeqCst);
+                    return;
+                }
+
+                let cfg = config.read().await.clone();
+                if !cfg.enabled {
+                    recovery_in_progress.store(false, Ordering::SeqCst);
+                    return;
+                }
+
+                attempt = attempt.saturating_add(1);
+                Self::publish_reconnecting(&event_bus, &lost_device, attempt).await;
+                Self::publish_state(
+                    &event_bus,
+                    "device_lost",
+                    Some(lost_device.clone()),
+                    Some("audio_reconnecting"),
+                    Some(AUDIO_RECOVERY_RETRY_DELAY.as_millis() as u64),
+                )
+                .await;
+
+                tokio::time::sleep(AUDIO_RECOVERY_RETRY_DELAY).await;
+
+                let devices = match enumerate_audio_devices() {
+                    Ok(devices) => devices,
+                    Err(e) => {
+                        debug!(
+                            "Audio recovery enumerate failed (attempt {}): {}",
+                            attempt, e
+                        );
+                        continue;
+                    }
+                };
+
+                let Some(device) = Self::select_recovery_device(&devices, &cfg.device) else {
+                    debug!("No audio devices found during recovery attempt {}", attempt);
+                    continue;
+                };
+
+                let streamer_config = AudioStreamerConfig {
+                    capture: AudioConfig {
+                        device_name: device.name.clone(),
+                        ..Default::default()
+                    },
+                    opus: cfg.quality.to_opus_config(),
+                };
+                let new_streamer = Arc::new(AudioStreamer::with_config(streamer_config));
+
+                match new_streamer.start().await {
+                    Ok(()) => {
+                        {
+                            let mut cfg = config.write().await;
+                            cfg.device = device.name.clone();
+                        }
+                        *streamer_slot.write().await = Some(new_streamer.clone());
+                        monitor.report_recovered().await;
+                        Self::publish_recovered(&event_bus, &device.name).await;
+                        if let Some(callback) = recovered_callback.read().await.clone() {
+                            callback();
+                        }
+                        Self::publish_state(
+                            &event_bus,
+                            "streaming",
+                            Some(device.name.clone()),
+                            None,
+                            None,
+                        )
+                        .await;
+                        recovery_in_progress.store(false, Ordering::SeqCst);
+                        info!(
+                            "Audio device recovered with {} after {} attempts",
+                            device.name, attempt
+                        );
+                        Self::spawn_stream_monitor_from_parts(
+                            config,
+                            streamer_slot,
+                            event_bus,
+                            monitor,
+                            recovery_in_progress,
+                            recovered_callback,
+                            new_streamer,
+                            device.name,
+                        );
+                        return;
+                    }
+                    Err(e) => {
+                        debug!(
+                            "Audio recovery start failed with {} (attempt {}): {}",
+                            device.name, attempt, e
+                        );
+                    }
+                }
+            }
+        });
+    }
+
+    fn spawn_recovery_task(&self, lost_device: String, reason: String) {
+        Self::spawn_recovery_task_from_parts(
+            self.config.clone(),
+            self.streamer.clone(),
+            self.event_bus.clone(),
+            self.monitor.clone(),
+            self.recovery_in_progress.clone(),
+            self.recovered_callback.clone(),
+            lost_device,
+            reason,
+        );
+    }
+
+    fn spawn_stream_monitor(&self, streamer: Arc<AudioStreamer>, device: String) {
+        Self::spawn_stream_monitor_from_parts(
+            self.config.clone(),
+            self.streamer.clone(),
+            self.event_bus.clone(),
+            self.monitor.clone(),
+            self.recovery_in_progress.clone(),
+            self.recovered_callback.clone(),
+            streamer,
+            device,
+        );
+    }
+
     pub async fn list_devices(&self) -> Result<Vec<AudioDeviceInfo>> {
         let current_device = if self.is_streaming().await {
             Some(self.config.read().await.device.clone())
@@ -199,16 +500,28 @@ impl AudioController {
             return Ok(());
         }
 
+        let mut select_error = None;
         let (device_name, quality) = {
             let mut cfg = self.config.write().await;
             if cfg.device.trim().is_empty() {
-                let best = find_best_audio_device()?;
-                cfg.device = best.name;
+                match find_best_audio_device() {
+                    Ok(best) => cfg.device = best.name,
+                    Err(e) => {
+                        select_error = Some(format!("Failed to select audio device: {}", e));
+                    }
+                }
             }
             (cfg.device.clone(), cfg.quality)
         };
 
-        info!("Starting audio streaming with device: {}", device_name);
+        if let Some(error_msg) = select_error {
+            self.monitor.report_error(&error_msg, "start_failed").await;
+            self.spawn_recovery_task("auto".to_string(), error_msg.clone());
+            self.mark_device_info_dirty().await;
+            return Err(AppError::AudioError(error_msg));
+        }
+
+        debug!("Starting audio streaming with device: {}", device_name);
 
         self.monitor.prepare_retry_attempt();
 
@@ -226,18 +539,23 @@ impl AudioController {
             let error_msg = format!("Failed to start audio: {}", e);
 
             self.monitor.report_error(&error_msg, "start_failed").await;
+            self.spawn_recovery_task(device_name.clone(), error_msg.clone());
 
             self.mark_device_info_dirty().await;
 
             return Err(AppError::AudioError(error_msg));
         }
 
+        let streamer_for_monitor = streamer.clone();
         *self.streamer.write().await = Some(streamer);
+        self.spawn_stream_monitor(streamer_for_monitor, device_name.clone());
 
         if self.monitor.is_error().await {
             self.monitor.report_recovered().await;
         }
 
+        self.recovery_in_progress.store(false, Ordering::SeqCst);
+
         self.mark_device_info_dirty().await;
 
         info!("Audio streaming started");
@@ -245,10 +563,13 @@ impl AudioController {
     }
 
     pub async fn stop_streaming(&self) -> Result<()> {
+        self.recovery_in_progress.store(false, Ordering::SeqCst);
+
         if let Some(streamer) = self.streamer.write().await.take() {
             streamer.stop().await?;
         }
 
+        self.monitor.reset().await;
         self.mark_device_info_dirty().await;
 
         info!("Audio streaming stopped");

src/audio/encoder.rs

@@ -3,7 +3,7 @@
 use audiopus::coder::GenericCtl;
 use audiopus::{coder::Encoder, Application, Bitrate, Channels, SampleRate};
 use bytes::Bytes;
-use tracing::info;
+use tracing::debug;
 
 use super::capture::AudioFrame;
 use crate::error::{AppError, Result};
@@ -123,7 +123,7 @@ impl OpusEncoder {
                 .map_err(|e| AppError::AudioError(format!("Failed to enable FEC: {:?}", e)))?;
         }
 
-        info!(
+        debug!(
             "Opus encoder created: {}Hz {}ch {}bps",
             config.sample_rate, config.channels, config.bitrate
         );

src/audio/streamer.rs

@@ -3,13 +3,14 @@
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
 use tokio::sync::{broadcast, mpsc, watch, Mutex as AsyncMutex, RwLock};
-use tracing::{error, info, warn};
+use tracing::{debug, error, info, warn};
 
 use super::capture::{AudioCapturer, AudioConfig, AudioFrame, CaptureState};
 use super::encoder::{OpusConfig, OpusEncoder, OpusFrame};
 use crate::error::{AppError, Result};
 use bytemuck;
 use bytes::Bytes;
+use std::time::Duration;
 
 /// 48 kHz stereo: 20 ms = 960 × 2 samples (S16LE).
 const OPUS_STEREO_SAMPLES: usize = 960 * 2;
@@ -156,6 +157,49 @@ impl AudioStreamer {
 
         capturer.start().await?;
 
+        let mut capture_state = capturer.state_watch();
+        let startup_result = tokio::time::timeout(Duration::from_secs(2), async {
+            loop {
+                let current_state = *capture_state.borrow();
+                match current_state {
+                    CaptureState::Running => return Ok(()),
+                    CaptureState::Error => {
+                        return Err(AppError::AudioError(
+                            "Audio capture failed to start".to_string(),
+                        ))
+                    }
+                    CaptureState::Stopped => {
+                        if capture_state.changed().await.is_err() {
+                            return Err(AppError::AudioError(
+                                "Audio capture stopped during startup".to_string(),
+                            ));
+                        }
+                    }
+                }
+            }
+        })
+        .await;
+
+        match startup_result {
+            Ok(Ok(())) => {}
+            Ok(Err(e)) => {
+                let _ = capturer.stop().await;
+                *self.capturer.write().await = None;
+                *self.encoder.lock().await = None;
+                let _ = self.state.send(AudioStreamState::Error);
+                return Err(e);
+            }
+            Err(_) => {
+                let _ = capturer.stop().await;
+                *self.capturer.write().await = None;
+                *self.encoder.lock().await = None;
+                let _ = self.state.send(AudioStreamState::Error);
+                return Err(AppError::AudioError(
+                    "Timed out waiting for audio capture to start".to_string(),
+                ));
+            }
+        }
+
         let capturer_for_task = capturer.clone();
         let encoder = self.encoder.clone();
         let opus_subscribers = self.opus_subscribers.clone();
@@ -232,7 +276,7 @@ impl AudioStreamer {
         let mut pcm_rx = capturer.subscribe();
         let _ = state.send(AudioStreamState::Running);
 
-        info!("Audio stream task started (48 kHz stereo → Opus, mpsc fan-out)");
+        debug!("Audio stream task started (48 kHz stereo → Opus, mpsc fan-out)");
 
         let mut pending: Vec<i16> = Vec::new();
 
@@ -310,13 +354,18 @@ impl AudioStreamer {
                 Err(_) => {
                     if capturer.state() != CaptureState::Running {
                         info!("Audio capture stopped, ending stream task");
+                        let _ = state.send(AudioStreamState::Error);
                         break;
                     }
                 }
             }
         }
 
-        let _ = state.send(AudioStreamState::Stopped);
+        if stop_flag.load(Ordering::Relaxed) {
+            let _ = state.send(AudioStreamState::Stopped);
+        } else {
+            opus_subscribers.lock().unwrap().clear();
+        }
         info!("Audio stream task ended");
     }
 }

src/extensions/manager.rs

@@ -116,7 +116,7 @@ impl ExtensionManager {
             "Starting extension {}: {} {}",
             id,
             id.binary_path(),
-            args.join(" ")
+            Self::redact_args_for_log(&args).join(" ")
         );
 
         let mut child = Command::new(id.binary_path())
@@ -302,6 +302,34 @@ impl ExtensionManager {
         }
     }
 
+    fn redact_args_for_log(args: &[String]) -> Vec<String> {
+        let mut redacted = Vec::with_capacity(args.len());
+        let mut redact_next = false;
+
+        for arg in args {
+            if redact_next {
+                redacted.push("****".to_string());
+                redact_next = false;
+                continue;
+            }
+
+            if arg == "-key" || arg == "--key" {
+                redacted.push(arg.clone());
+                redact_next = true;
+            } else if let Some((flag, _)) = arg.split_once('=') {
+                if flag == "-key" || flag == "--key" {
+                    redacted.push(format!("{}=****", flag));
+                } else {
+                    redacted.push(arg.clone());
+                }
+            } else {
+                redacted.push(arg.clone());
+            }
+        }
+
+        redacted
+    }
+
     async fn prepare_ttyd_socket() -> Result<(), String> {
         let socket_path = Path::new(TTYD_SOCKET_PATH);
 

src/hid/otg.rs

@@ -827,15 +827,15 @@ impl OtgBackend {
 #[async_trait]
 impl HidBackend for OtgBackend {
     async fn init(&self) -> Result<()> {
-        info!("Initializing OTG HID backend");
+        debug!("Initializing OTG HID backend");
 
         if self.udc_name.read().is_none() {
             if let Some(udc) = Self::find_udc() {
-                info!("Auto-detected UDC: {}", udc);
+                debug!("Auto-detected UDC: {}", udc);
                 self.set_udc_name(&udc);
             }
         } else if let Some(udc) = self.udc_name.read().clone() {
-            info!("Using configured UDC: {}", udc);
+            debug!("Using configured UDC: {}", udc);
         }
 
         let mut device_paths = Vec::new();
@@ -866,7 +866,7 @@ impl HidBackend for OtgBackend {
             if path.exists() {
                 let file = Self::open_device(path)?;
                 *self.keyboard_dev.lock() = Some(file);
-                info!("Keyboard device opened: {}", path.display());
+                debug!("Keyboard device opened: {}", path.display());
             } else {
                 warn!("Keyboard device not found: {}", path.display());
             }
@@ -876,7 +876,7 @@ impl HidBackend for OtgBackend {
             if path.exists() {
                 let file = Self::open_device(path)?;
                 *self.mouse_rel_dev.lock() = Some(file);
-                info!("Relative mouse device opened: {}", path.display());
+                debug!("Relative mouse device opened: {}", path.display());
             } else {
                 warn!("Relative mouse device not found: {}", path.display());
             }
@@ -886,7 +886,7 @@ impl HidBackend for OtgBackend {
             if path.exists() {
                 let file = Self::open_device(path)?;
                 *self.mouse_abs_dev.lock() = Some(file);
-                info!("Absolute mouse device opened: {}", path.display());
+                debug!("Absolute mouse device opened: {}", path.display());
             } else {
                 warn!("Absolute mouse device not found: {}", path.display());
             }
@@ -896,7 +896,7 @@ impl HidBackend for OtgBackend {
             if path.exists() {
                 let file = Self::open_device(path)?;
                 *self.consumer_dev.lock() = Some(file);
-                info!("Consumer control device opened: {}", path.display());
+                debug!("Consumer control device opened: {}", path.display());
             } else {
                 debug!("Consumer control device not found: {}", path.display());
             }

src/main.rs

@@ -424,13 +424,13 @@ async fn main() -> anyhow::Result<()> {
         if let Err(e) = webrtc_streamer.set_audio_enabled(true).await {
             tracing::warn!("Failed to enable WebRTC audio: {}", e);
         } else {
-            tracing::info!("WebRTC audio enabled");
+            tracing::debug!("WebRTC audio enabled");
         }
     }
 
     let (device_path, actual_resolution, actual_format, actual_fps, jpeg_quality) =
         streamer.current_capture_config().await;
-    tracing::info!(
+    tracing::debug!(
         "Initial video config: {}x{} {:?} @ {}fps",
         actual_resolution.width,
         actual_resolution.height,
@@ -461,7 +461,7 @@ async fn main() -> anyhow::Result<()> {
                 v4l2_driver,
             )
             .await;
-        tracing::info!("WebRTC streamer configured for direct capture");
+        tracing::debug!("WebRTC streamer configured for direct capture");
     } else {
         tracing::warn!("No capture device configured for WebRTC");
     }
@@ -472,6 +472,18 @@ async fn main() -> anyhow::Result<()> {
     );
     stream_manager.set_event_bus(events.clone()).await;
     stream_manager.set_config_store(config_store.clone()).await;
+    {
+        let stream_manager_weak = Arc::downgrade(&stream_manager);
+        audio
+            .set_recovered_callback(Arc::new(move || {
+                if let Some(stream_manager) = stream_manager_weak.upgrade() {
+                    tokio::spawn(async move {
+                        stream_manager.reconnect_webrtc_audio_sources().await;
+                    });
+                }
+            }))
+            .await;
+    }
 
     let initial_mode = config.stream.mode.clone();
     if let Err(e) = stream_manager.init_with_mode(initial_mode.clone()).await {

src/otg/manager.rs

@@ -163,7 +163,7 @@ impl OtgGadgetManager {
     }
 
     pub fn setup(&mut self) -> Result<()> {
-        info!("Setting up OTG USB Gadget: {}", self.gadget_name);
+        debug!("Setting up OTG USB Gadget: {}", self.gadget_name);
 
         if !Self::is_available() {
             return Err(AppError::Internal(
@@ -173,7 +173,7 @@ impl OtgGadgetManager {
 
         if self.gadget_exists() {
             if self.is_bound() {
-                info!("Gadget already exists and is bound, skipping setup");
+                debug!("Gadget already exists and is bound, skipping setup");
                 return Ok(());
             }
             warn!("Gadget exists but not bound, will reconfigure");
@@ -194,7 +194,7 @@ impl OtgGadgetManager {
             func.link(&self.config_path, &self.gadget_path)?;
         }
 
-        info!("OTG USB Gadget setup complete");
+        debug!("OTG USB Gadget setup complete");
         Ok(())
     }
 
@@ -203,7 +203,7 @@ impl OtgGadgetManager {
             warn!("Failed to recreate gadget config links before bind: {}", e);
         }
 
-        info!("Binding gadget to UDC: {}", udc);
+        debug!("Binding gadget to UDC: {}", udc);
         write_file(&self.gadget_path.join("UDC"), &udc)?;
         self.bound_udc = Some(udc.to_string());
         std::thread::sleep(std::time::Duration::from_millis(REBIND_DELAY_MS));

src/otg/service.rs

@@ -148,7 +148,7 @@ impl OtgService {
     async fn reconcile_gadget(&self) -> Result<()> {
         let desired = self.desired.read().await.clone();
 
-        info!(
+        debug!(
             "Reconciling OTG gadget: HID={}, MSD={}, UDC={:?}",
             desired.hid_enabled(),
             desired.msd_enabled,
@@ -166,7 +166,7 @@ impl OtgService {
                 && state.max_endpoints == desired.max_endpoints
                 && state.descriptor.as_ref() == Some(&desired.descriptor)
             {
-                info!("OTG gadget already matches desired state");
+                debug!("OTG gadget already matches desired state");
                 return Ok(());
             }
         }
@@ -174,7 +174,7 @@ impl OtgService {
         {
             let mut manager = self.manager.lock().await;
             if let Some(mut m) = manager.take() {
-                info!("Cleaning up existing gadget before OTG reconcile");
+                debug!("Cleaning up existing gadget before OTG reconcile");
                 if let Err(e) = m.cleanup() {
                     warn!("Error cleaning up existing gadget: {}", e);
                 }

src/video/capture_status.rs

@@ -28,6 +28,15 @@ pub fn classify_capture_io_error(err: &io::Error) -> CaptureIoErrorKind {
     }
 }
 
+pub fn is_device_lost_message(message: &str) -> bool {
+    message.contains("No such file or directory")
+        || message.contains("No such device")
+        || message.contains("os error 2")
+        || message.contains("ENODEV")
+        || message.contains("ENXIO")
+        || message.contains("ESHUTDOWN")
+}
+
 pub fn capture_error_log_key(err: &io::Error) -> String {
     let message = err.to_string();
     if message.contains("dqbuf failed") && message.contains("EINVAL") {

src/video/device.rs

@@ -61,6 +61,29 @@ pub struct VideoDeviceInfo {
     pub bridge_kind: Option<String>,
 }
 
+#[derive(Debug, Clone)]
+pub struct VideoDeviceRecoveryHint {
+    pub path: PathBuf,
+    pub name: String,
+    pub driver: String,
+    pub bus_info: String,
+    pub card: String,
+    pub is_capture_card: bool,
+}
+
+impl From<&VideoDeviceInfo> for VideoDeviceRecoveryHint {
+    fn from(device: &VideoDeviceInfo) -> Self {
+        Self {
+            path: device.path.clone(),
+            name: device.name.clone(),
+            driver: device.driver.clone(),
+            bus_info: device.bus_info.clone(),
+            card: device.card.clone(),
+            is_capture_card: device.is_capture_card,
+        }
+    }
+}
+
 /// Information about a supported format
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FormatInfo {
@@ -850,7 +873,7 @@ impl VideoDevice {
 
 /// Enumerate all video capture devices
 pub fn enumerate_devices() -> Result<Vec<VideoDeviceInfo>> {
-    info!("Enumerating video devices...");
+    debug!("Enumerating video devices...");
 
     // First pass: collect candidates that pass the sysfs-based pre-filter.
     // This avoids opening orphan /dev/videoN nodes (ENODEV) and m2m codec
@@ -934,6 +957,51 @@ pub fn enumerate_devices() -> Result<Vec<VideoDeviceInfo>> {
     Ok(devices)
 }
 
+pub fn select_recovery_device(
+    devices: &[VideoDeviceInfo],
+    hint: &VideoDeviceRecoveryHint,
+) -> Option<VideoDeviceInfo> {
+    devices
+        .iter()
+        .find(|device| device.path == hint.path)
+        .or_else(|| {
+            if hint.bus_info.trim().is_empty() {
+                None
+            } else {
+                devices
+                    .iter()
+                    .find(|device| device.bus_info == hint.bus_info)
+            }
+        })
+        .or_else(|| {
+            if hint.driver.trim().is_empty() || hint.card.trim().is_empty() {
+                None
+            } else {
+                devices
+                    .iter()
+                    .find(|device| device.driver == hint.driver && device.card == hint.card)
+            }
+        })
+        .or_else(|| {
+            if hint.driver.trim().is_empty() || hint.name.trim().is_empty() {
+                None
+            } else {
+                devices
+                    .iter()
+                    .find(|device| device.driver == hint.driver && device.name == hint.name)
+            }
+        })
+        .or_else(|| {
+            if hint.is_capture_card {
+                devices.iter().find(|device| device.is_capture_card)
+            } else {
+                None
+            }
+        })
+        .or_else(|| devices.first())
+        .cloned()
+}
+
 /// Collapse platform sub-device nodes that share the same driver + bus_info
 /// into a single entry (the one with the highest priority / most formats).
 /// Currently applies to the `rkcif` driver on Rockchip SoCs where each
@@ -1215,6 +1283,35 @@ pub fn find_best_device() -> Result<VideoDeviceInfo> {
 mod tests {
     use super::*;
 
+    fn test_device(
+        path: &str,
+        name: &str,
+        driver: &str,
+        bus_info: &str,
+        card: &str,
+        is_capture_card: bool,
+        priority: u32,
+    ) -> VideoDeviceInfo {
+        VideoDeviceInfo {
+            path: PathBuf::from(path),
+            name: name.to_string(),
+            driver: driver.to_string(),
+            bus_info: bus_info.to_string(),
+            card: card.to_string(),
+            formats: Vec::new(),
+            capabilities: DeviceCapabilities {
+                video_capture: true,
+                streaming: true,
+                ..Default::default()
+            },
+            is_capture_card,
+            priority,
+            has_signal: true,
+            subdev_path: None,
+            bridge_kind: None,
+        }
+    }
+
     #[test]
     fn test_pixel_format_conversion() {
         let format = PixelFormat::Mjpeg;
@@ -1230,4 +1327,70 @@ mod tests {
         assert_eq!(res.height, 1080);
         assert!(res.is_valid());
     }
+
+    #[test]
+    fn recovery_selection_prefers_original_path() {
+        let original = test_device(
+            "/dev/video0",
+            "USB Capture",
+            "uvcvideo",
+            "usb-1",
+            "USB Capture",
+            true,
+            100,
+        );
+        let other = test_device(
+            "/dev/video2",
+            "USB Capture",
+            "uvcvideo",
+            "usb-1",
+            "USB Capture",
+            true,
+            200,
+        );
+        let hint = VideoDeviceRecoveryHint::from(&original);
+        let selected = select_recovery_device(&[other, original.clone()], &hint).unwrap();
+        assert_eq!(selected.path, original.path);
+    }
+
+    #[test]
+    fn recovery_selection_matches_bus_info_after_path_change() {
+        let original = test_device(
+            "/dev/video0",
+            "USB Capture",
+            "uvcvideo",
+            "usb-1",
+            "USB Capture",
+            true,
+            100,
+        );
+        let recovered = test_device(
+            "/dev/video3",
+            "USB Capture",
+            "uvcvideo",
+            "usb-1",
+            "USB Capture",
+            true,
+            100,
+        );
+        let hint = VideoDeviceRecoveryHint::from(&original);
+        let selected = select_recovery_device(&[recovered.clone()], &hint).unwrap();
+        assert_eq!(selected.path, recovered.path);
+    }
+
+    #[test]
+    fn recovery_selection_falls_back_to_capture_priority() {
+        let hint = VideoDeviceRecoveryHint {
+            path: PathBuf::from("/dev/video9"),
+            name: "Gone".to_string(),
+            driver: "gone".to_string(),
+            bus_info: String::new(),
+            card: "Gone".to_string(),
+            is_capture_card: true,
+        };
+        let lower = test_device("/dev/video1", "A", "uvcvideo", "usb-a", "A", true, 10);
+        let higher = test_device("/dev/video2", "B", "uvcvideo", "usb-b", "B", true, 20);
+        let selected = select_recovery_device(&[higher.clone(), lower], &hint).unwrap();
+        assert_eq!(selected.path, higher.path);
+    }
 }

src/video/shared_video_pipeline.rs

@@ -45,8 +45,8 @@ use crate::error::{AppError, Result};
 use crate::utils::LogThrottler;
 use crate::video::capture_limits::{should_validate_jpeg_frame, MIN_CAPTURE_FRAME_SIZE};
 use crate::video::capture_status::{
-    capture_error_log_key, classify_capture_io_error, signal_status_from_capture_kind,
-    CaptureIoErrorKind,
+    capture_error_log_key, classify_capture_io_error, is_device_lost_message,
+    signal_status_from_capture_kind, CaptureIoErrorKind,
 };
 use crate::video::csi_bridge::{self, ProbeResult};
 use crate::video::device::parse_bridge_kind;
@@ -272,6 +272,7 @@ pub struct SharedVideoPipeline {
     /// Uses AtomicI64 instead of Mutex for lock-free access
     pipeline_start_time_ms: AtomicI64,
     pending_sync_geometry: ParkingMutex<Option<(Resolution, PixelFormat)>>,
+    device_lost_reason: ParkingMutex<Option<String>>,
     state_notifier: ParkingRwLock<Option<Arc<dyn Fn(PipelineStateNotification) + Send + Sync>>>,
     last_state_notification: ParkingMutex<Option<PipelineStateNotification>>,
 }
@@ -377,6 +378,7 @@ impl SharedVideoPipeline {
             keyframe_requested: AtomicBool::new(false),
             pipeline_start_time_ms: AtomicI64::new(0),
             pending_sync_geometry: ParkingMutex::new(None),
+            device_lost_reason: ParkingMutex::new(None),
             state_notifier: ParkingRwLock::new(None),
             last_state_notification: ParkingMutex::new(None),
         });
@@ -388,6 +390,14 @@ impl SharedVideoPipeline {
         self.pending_sync_geometry.lock().take()
     }
 
+    pub fn take_device_lost_reason(&self) -> Option<String> {
+        self.device_lost_reason.lock().take()
+    }
+
+    fn mark_device_lost(&self, reason: String) {
+        *self.device_lost_reason.lock() = Some(reason);
+    }
+
     pub fn set_state_notifier(
         &self,
         notifier: Option<Arc<dyn Fn(PipelineStateNotification) + Send + Sync>>,
@@ -783,6 +793,7 @@ impl SharedVideoPipeline {
                 enum OpenResult {
                     Opened(V4l2rCaptureStream),
                     NoSignal(SignalStatus),
+                    DeviceLost(String),
                     Fatal,
                 }
 
@@ -807,6 +818,11 @@ impl SharedVideoPipeline {
                             OpenResult::NoSignal(signal_status_from_capture_kind(&kind))
                         }
                         Err(e) => {
+                            let reason = e.to_string();
+                            if is_device_lost_message(&reason) {
+                                error!("Capture device lost during soft-restart: {}", e);
+                                return OpenResult::DeviceLost(reason);
+                            }
                             error!("Capture soft-restart failed: {}", e);
                             OpenResult::Fatal
                         }
@@ -950,6 +966,13 @@ impl SharedVideoPipeline {
                                 std::thread::sleep(Duration::from_millis(wait_ms));
                                 continue;
                             }
+                            OpenResult::DeviceLost(reason) => {
+                                pipeline.mark_device_lost(reason);
+                                let _ = pipeline.running.send(false);
+                                pipeline.running_flag.store(false, Ordering::Release);
+                                let _ = frame_seq_tx.send(sequence.wrapping_add(1));
+                                break;
+                            }
                             OpenResult::Fatal => {
                                 let _ = pipeline.running.send(false);
                                 pipeline.running_flag.store(false, Ordering::Release);
@@ -1137,6 +1160,7 @@ impl SharedVideoPipeline {
                                     }
                                     CaptureIoErrorKind::DeviceLost => {
                                         error!("Capture device lost: {}", e);
+                                        pipeline.mark_device_lost(e.to_string());
                                         let _ = pipeline.running.send(false);
                                         pipeline.running_flag.store(false, Ordering::Release);
                                         let _ = frame_seq_tx.send(sequence.wrapping_add(1));

src/video/streamer.rs

@@ -13,7 +13,8 @@ use tracing::{debug, error, info, trace, warn};
 
 use super::csi_bridge;
 use super::device::{
-    enumerate_devices, find_best_device, parse_bridge_kind, VideoDevice, VideoDeviceInfo,
+    enumerate_devices, find_best_device, parse_bridge_kind, select_recovery_device, VideoDevice,
+    VideoDeviceInfo, VideoDeviceRecoveryHint,
 };
 use super::format::{PixelFormat, Resolution};
 use super::frame::{FrameBuffer, FrameBufferPool, VideoFrame};
@@ -366,7 +367,7 @@ impl Streamer {
 
         // IMPORTANT: Disconnect all MJPEG clients FIRST before stopping capture
         // This prevents race conditions where clients try to reconnect and reopen the device
-        info!("Disconnecting all MJPEG clients before config change...");
+        debug!("Disconnecting all MJPEG clients before config change...");
         self.mjpeg_handler.disconnect_all_clients();
 
         // Give clients time to receive the disconnect signal and close their connections
@@ -392,7 +393,7 @@ impl Streamer {
         *self.state.write().await = StreamerState::Ready;
 
         // Publish "config applied" event
-        info!(
+        debug!(
             "Publishing StreamConfigApplied event: {}x{} {:?} @ {}fps",
             resolution.width, resolution.height, format, fps
         );
@@ -408,7 +409,7 @@ impl Streamer {
         // Note: We don't auto-start here anymore.
         // The stream will be started when MJPEG client connects (handlers.rs:790)
         // This avoids race conditions between config change and client reconnection.
-        info!("Config applied, stream will start when client connects");
+        debug!("Config applied, stream will start when client connects");
 
         Ok(())
     }
@@ -1305,6 +1306,7 @@ impl Streamer {
 
         {
             let mut cfg = self.config.write().await;
+            cfg.device_path = Some(device_info.path.clone());
             cfg.format = format;
             cfg.resolution = resolution;
         }
@@ -1392,6 +1394,20 @@ impl Streamer {
             .await
             .clone()
             .unwrap_or_else(|| "Device lost".to_string());
+        let recovery_hint = self
+            .current_device
+            .read()
+            .await
+            .as_ref()
+            .map(VideoDeviceRecoveryHint::from)
+            .unwrap_or_else(|| VideoDeviceRecoveryHint {
+                path: PathBuf::from(&device),
+                name: String::new(),
+                driver: String::new(),
+                bus_info: String::new(),
+                card: String::new(),
+                is_capture_card: true,
+            });
 
         // Store error info
         *self.last_lost_device.write().await = Some(device.clone());
@@ -1409,7 +1425,7 @@ impl Streamer {
         // Start recovery task
         let streamer = Arc::clone(self);
         tokio::spawn(async move {
-            let device_path = device.clone();
+            let original_device_path = device.clone();
 
             loop {
                 let attempt = streamer
@@ -1433,13 +1449,13 @@ impl Streamer {
                 if attempt == 1 || attempt.is_multiple_of(5) {
                     streamer
                         .publish_event(SystemEvent::StreamReconnecting {
-                            device: device_path.clone(),
+                            device: original_device_path.clone(),
                             attempt,
                         })
                         .await;
                     info!(
                         "Attempting to recover video device {} (attempt {})",
-                        device_path, attempt
+                        original_device_path, attempt
                     );
                 }
 
@@ -1450,9 +1466,28 @@ impl Streamer {
                 };
                 tokio::time::sleep(wait).await;
 
-                // Check if device file exists
-                let device_exists = std::path::Path::new(&device_path).exists();
-                if !device_exists {
+                let devices = match enumerate_devices() {
+                    Ok(devices) => devices,
+                    Err(e) => {
+                        debug!("Failed to enumerate devices during recovery: {}", e);
+                        continue;
+                    }
+                };
+
+                let Some(device) = select_recovery_device(&devices, &recovery_hint) else {
+                    debug!("No matching video device present yet for recovery");
+                    continue;
+                };
+
+                let device_path = device.path.display().to_string();
+                if device_path != original_device_path {
+                    info!(
+                        "Recovered video device path changed: {} -> {}",
+                        original_device_path, device_path
+                    );
+                }
+
+                if !std::path::Path::new(&device_path).exists() {
                     debug!("Device {} not present yet", device_path);
                     continue;
                 }

src/web/handlers/config/apply.rs

@@ -365,7 +365,7 @@ pub async fn apply_audio_config(
         .stream_manager
         .set_webrtc_audio_enabled(new_config.enabled)
         .await?;
-    tracing::info!("WebRTC audio enabled: {}", new_config.enabled);
+    tracing::debug!("WebRTC audio enabled: {}", new_config.enabled);
 
     if new_config.enabled {
         state.stream_manager.reconnect_webrtc_audio_sources().await;

src/webrtc/webrtc_streamer.rs

@@ -2,6 +2,7 @@
 
 use std::collections::HashMap;
 use std::path::PathBuf;
+use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, RwLock as StdRwLock};
 use tokio::sync::RwLock;
 use tracing::{debug, info, trace, warn};
@@ -10,6 +11,9 @@ use crate::audio::{AudioController, OpusFrame};
 use crate::error::{AppError, Result};
 use crate::events::{EventBus, SystemEvent};
 use crate::hid::HidController;
+use crate::video::device::{
+    enumerate_devices, select_recovery_device, VideoDevice, VideoDeviceRecoveryHint,
+};
 use crate::video::types::{
     BitratePreset, EncoderBackend, PipelineStateNotification, PixelFormat, Resolution,
     SharedVideoPipeline, SharedVideoPipelineConfig, SharedVideoPipelineStats, VideoCodecType,
@@ -56,6 +60,7 @@ pub struct CaptureDeviceConfig {
     pub bridge_kind: Option<String>,
     /// V4L2 driver name (e.g. `uvcvideo`) for UVC-specific recovery hints.
     pub v4l2_driver: Option<String>,
+    pub recovery_hint: VideoDeviceRecoveryHint,
 }
 
 #[derive(Debug, Clone, Default)]
@@ -88,6 +93,7 @@ pub struct WebRtcStreamer {
     audio_controller: RwLock<Option<Arc<AudioController>>>,
     hid_controller: RwLock<Option<Arc<HidController>>>,
     events: RwLock<Option<Arc<EventBus>>>,
+    recovery_in_progress: AtomicBool,
     self_weak: StdRwLock<Option<std::sync::Weak<Self>>>,
 }
 
@@ -107,6 +113,7 @@ impl WebRtcStreamer {
             audio_controller: RwLock::new(None),
             hid_controller: RwLock::new(None),
             events: RwLock::new(None),
+            recovery_in_progress: AtomicBool::new(false),
             self_weak: StdRwLock::new(None),
         });
         let weak = Arc::downgrade(&streamer);
@@ -283,6 +290,156 @@ impl WebRtcStreamer {
         Ok(sessions_to_reconnect.len())
     }
 
+    async fn publish_stream_event(&self, event: SystemEvent) {
+        if let Some(events) = self.events.read().await.as_ref() {
+            events.publish(event);
+            events.mark_device_info_dirty();
+        }
+    }
+
+    async fn update_recovered_capture_device(
+        &self,
+        device: crate::video::device::VideoDeviceInfo,
+    ) -> Result<()> {
+        let (format, resolution, fps, jpeg_quality, buffer_count) = {
+            let config = self.config.read().await;
+            let current_capture = self.capture_device.read().await.clone();
+            (
+                config.input_format,
+                config.resolution,
+                config.fps,
+                current_capture
+                    .as_ref()
+                    .map(|capture| capture.jpeg_quality)
+                    .unwrap_or(80),
+                current_capture
+                    .as_ref()
+                    .map(|capture| capture.buffer_count)
+                    .unwrap_or(2),
+            )
+        };
+
+        let pipeline_config = CaptureDeviceConfig {
+            device_path: device.path.clone(),
+            buffer_count,
+            jpeg_quality,
+            subdev_path: device.subdev_path.clone(),
+            bridge_kind: device.bridge_kind.clone(),
+            v4l2_driver: Some(device.driver.clone()),
+            recovery_hint: VideoDeviceRecoveryHint::from(&device),
+        };
+
+        *self.capture_device.write().await = Some(pipeline_config);
+        let mut config = self.config.write().await;
+        config.input_format = format;
+        config.resolution = resolution;
+        config.fps = fps;
+        Ok(())
+    }
+
+    fn start_device_recovery(self: &Arc<Self>, hint: VideoDeviceRecoveryHint, reason: String) {
+        if self.recovery_in_progress.swap(true, Ordering::SeqCst) {
+            debug!("WebRTC video recovery already in progress");
+            return;
+        }
+
+        let streamer = self.clone();
+        tokio::spawn(async move {
+            let original_device = hint.path.display().to_string();
+            warn!(
+                "WebRTC video recovery started for {}: {}",
+                original_device, reason
+            );
+            streamer
+                .publish_stream_event(SystemEvent::StreamDeviceLost {
+                    device: original_device.clone(),
+                    reason: reason.clone(),
+                })
+                .await;
+
+            let mut attempt = 0u32;
+            loop {
+                attempt = attempt.saturating_add(1);
+                streamer
+                    .publish_stream_event(SystemEvent::StreamReconnecting {
+                        device: original_device.clone(),
+                        attempt,
+                    })
+                    .await;
+                streamer
+                    .publish_stream_event(SystemEvent::StreamStateChanged {
+                        state: "device_lost".to_string(),
+                        device: Some(original_device.clone()),
+                        reason: Some("recovering".to_string()),
+                        next_retry_ms: Some(1_000),
+                    })
+                    .await;
+
+                tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+
+                let devices = match enumerate_devices() {
+                    Ok(devices) => devices,
+                    Err(e) => {
+                        debug!("WebRTC video recovery enumerate failed: {}", e);
+                        continue;
+                    }
+                };
+
+                let Some(device) = select_recovery_device(&devices, &hint) else {
+                    debug!("No matching WebRTC video device found during recovery");
+                    continue;
+                };
+
+                if let Err(e) = streamer
+                    .update_recovered_capture_device(device.clone())
+                    .await
+                {
+                    debug!("Failed to update recovered capture device: {}", e);
+                    continue;
+                }
+
+                match streamer.ensure_video_pipeline().await {
+                    Ok(_) => {
+                        match streamer
+                            .reconnect_sessions_to_current_pipeline("device recovery")
+                            .await
+                        {
+                            Ok(reconnected) => {
+                                info!(
+                                    "WebRTC video recovered with {} after {} attempts, reconnected {} sessions",
+                                    device.path.display(),
+                                    attempt,
+                                    reconnected
+                                );
+                                streamer
+                                    .publish_stream_event(SystemEvent::StreamRecovered {
+                                        device: device.path.display().to_string(),
+                                    })
+                                    .await;
+                                streamer
+                                    .publish_stream_event(SystemEvent::StreamStateChanged {
+                                        state: "streaming".to_string(),
+                                        device: Some(device.path.display().to_string()),
+                                        reason: None,
+                                        next_retry_ms: None,
+                                    })
+                                    .await;
+                                streamer.recovery_in_progress.store(false, Ordering::SeqCst);
+                                return;
+                            }
+                            Err(e) => {
+                                debug!("Failed to reconnect WebRTC sessions after recovery: {}", e);
+                            }
+                        }
+                    }
+                    Err(e) => {
+                        debug!("Failed to restart WebRTC video pipeline: {}", e);
+                    }
+                }
+            }
+        });
+    }
+
     /// Ensure video pipeline is initialized and running
     async fn ensure_video_pipeline(&self) -> Result<Arc<SharedVideoPipeline>> {
         let mut pipeline_guard = self.video_pipeline.write().await;
@@ -344,6 +501,7 @@ impl WebRtcStreamer {
                     // Clear pipeline reference in WebRtcStreamer
                     if let Some(streamer) = streamer_weak.upgrade() {
                         let mut pending_geometry: Option<(Resolution, PixelFormat)> = None;
+                        let mut device_lost_reason: Option<String> = None;
                         let mut pipeline_guard = streamer.video_pipeline.write().await;
                         // Only clear if it's the same pipeline that stopped
                         if let Some(ref current) = *pipeline_guard {
@@ -351,6 +509,7 @@ impl WebRtcStreamer {
                                 if Arc::ptr_eq(current, &stopped_pipeline) {
                                     pending_geometry =
                                         stopped_pipeline.take_pending_sync_geometry();
+                                    device_lost_reason = stopped_pipeline.take_device_lost_reason();
                                     *pipeline_guard = None;
                                     info!("Cleared stopped video pipeline reference");
                                 }
@@ -358,6 +517,13 @@ impl WebRtcStreamer {
                         }
                         drop(pipeline_guard);
 
+                        if let Some(reason) = device_lost_reason {
+                            if let Some(capture) = streamer.capture_device.read().await.clone() {
+                                streamer.start_device_recovery(capture.recovery_hint, reason);
+                            }
+                            continue;
+                        }
+
                         let should_reconnect = pending_geometry.is_some();
                         if let Some((r, f)) = pending_geometry {
                             streamer.sync_video_geometry_from_negotiated(r, f).await;
@@ -466,13 +632,13 @@ impl WebRtcStreamer {
             }
         }
 
-        info!("WebRTC audio enabled: {}", enabled);
+        debug!("WebRTC audio enabled: {}", enabled);
         Ok(())
     }
 
     /// Set audio controller reference
     pub async fn set_audio_controller(&self, controller: Arc<AudioController>) {
-        info!("Setting audio controller for WebRTC streamer");
+        debug!("Setting audio controller for WebRTC streamer");
         *self.audio_controller.write().await = Some(controller.clone());
 
         // Reconnect audio for existing sessions if audio is enabled
@@ -516,10 +682,21 @@ impl WebRtcStreamer {
         bridge_kind: Option<String>,
         v4l2_driver: Option<String>,
     ) {
-        info!(
+        debug!(
             "Setting direct capture device for WebRTC: {:?} (subdev={:?}, kind={:?}, driver={:?})",
             device_path, subdev_path, bridge_kind, v4l2_driver
         );
+        let recovery_hint = VideoDevice::open_readonly(&device_path)
+            .and_then(|device| device.info())
+            .map(|info| VideoDeviceRecoveryHint::from(&info))
+            .unwrap_or_else(|_| VideoDeviceRecoveryHint {
+                path: device_path.clone(),
+                name: String::new(),
+                driver: v4l2_driver.clone().unwrap_or_default(),
+                bus_info: String::new(),
+                card: String::new(),
+                is_capture_card: true,
+            });
         *self.capture_device.write().await = Some(CaptureDeviceConfig {
             device_path,
             buffer_count: 2,
@@ -527,6 +704,7 @@ impl WebRtcStreamer {
             subdev_path,
             bridge_kind,
             v4l2_driver,
+            recovery_hint,
         });
     }
 
@@ -1164,6 +1342,7 @@ impl Default for WebRtcStreamer {
             audio_controller: RwLock::new(None),
             hid_controller: RwLock::new(None),
             events: RwLock::new(None),
+            recovery_in_progress: AtomicBool::new(false),
             self_weak: StdRwLock::new(None),
         }
     }

web/src/composables/useAudioPlayer.ts

@@ -16,6 +16,31 @@ export function useAudioPlayer() {
   let decoder: any = null
   let nextPlayTime = 0
   let isConnecting = false // Prevent concurrent connection attempts
+  let reconnectTimer: number | null = null
+  let shouldReconnect = false
+
+  function clearReconnectTimer() {
+    if (reconnectTimer !== null) {
+      clearTimeout(reconnectTimer)
+      reconnectTimer = null
+    }
+  }
+
+  function scheduleReconnect() {
+    if (!shouldReconnect || volume.value <= 0 || reconnectTimer !== null) {
+      return
+    }
+
+    reconnectTimer = window.setTimeout(() => {
+      reconnectTimer = null
+      if (!shouldReconnect || volume.value <= 0) {
+        return
+      }
+      connect().catch(() => {
+        scheduleReconnect()
+      })
+    }, 1000)
+  }
 
   async function initDecoder() {
     const opusDecoder = new OpusDecoder({
@@ -34,6 +59,8 @@ export function useAudioPlayer() {
   }
 
   async function connect() {
+    shouldReconnect = true
+
     // Prevent concurrent connection attempts (critical fix for multiple WS connections)
     if (isConnecting) {
       return
@@ -52,6 +79,7 @@ export function useAudioPlayer() {
     }
 
     isConnecting = true
+    clearReconnectTimer()
 
     try {
       if (!decoder) await initDecoder()
@@ -72,6 +100,7 @@ export function useAudioPlayer() {
         connected.value = true
         playing.value = true
         error.value = null
+        clearReconnectTimer()
         nextPlayTime = audioContext!.currentTime
       }
 
@@ -83,8 +112,10 @@ export function useAudioPlayer() {
 
       ws.onclose = () => {
         isConnecting = false
+        ws = null
         connected.value = false
         playing.value = false
+        scheduleReconnect()
       }
 
       ws.onerror = () => {
@@ -94,10 +125,13 @@ export function useAudioPlayer() {
     } catch (e) {
       isConnecting = false
       error.value = e instanceof Error ? e.message : 'Failed to initialize audio'
+      scheduleReconnect()
     }
   }
 
   function disconnect() {
+    shouldReconnect = false
+    clearReconnectTimer()
     if (ws) {
       ws.close()
       ws = null
@@ -172,6 +206,11 @@ export function useAudioPlayer() {
   function setVolume(v: number) {
     volume.value = Math.max(0, Math.min(1, v))
     updateVolume()
+    if (volume.value <= 0) {
+      clearReconnectTimer()
+    } else if (shouldReconnect && !connected.value && !isConnecting) {
+      scheduleReconnect()
+    }
   }
 
   watch(volume, updateVolume)