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Improved audio discontinuity handling

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This commit is contained in:
Trevor Mears
2025-12-31 17:06:54 -08:00
parent d1bfd1b9e7
commit 2ab9b34f73
1 changed files with 23 additions and 4 deletions
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public/js/components/VideoPlayer.js
+23 -4
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@@ -112,9 +112,11 @@ class VideoPlayer {
// Audio discontinuity handling (fixes garbled audio during ad transitions)
stretchShortVideoTrack: true, // Stretch short segments to avoid gaps
forceKeyFrameOnDiscontinuity: true, // Force keyframe sync on discontinuity
// Audio drift tolerance - higher = less aggressive correction = fewer glitches
// 1 frame = ~23ms at 44.1kHz, so 4 frames = ~92ms tolerance
maxAudioFramesDrift: 4, // Allow ~92ms audio drift before correction
// Audio settings - prevent glitches during stream transitions
// Higher drift tolerance = less aggressive correction = fewer glitches
maxAudioFramesDrift: 8, // Allow ~185ms audio drift before correction (was 4)
// Audio track handling
audioStreamController: true, // Enable audio stream controller
// Disable progressive/streaming mode for stability with discontinuities
progressive: false,
// Stall recovery settings
@@ -124,6 +126,8 @@ class VideoPlayer {
levelLoadingMaxRetry: 4,
manifestLoadingMaxRetry: 4,
fragLoadingMaxRetry: 6,
// Low latency mode off for more stable audio
lowLatencyMode: false,
// Caption/Subtitle settings
enableCEA708Captions: true, // Enable CEA-708 closed captions
enableWebVTT: true, // Enable WebVTT subtitles
@@ -203,10 +207,25 @@ class VideoPlayer {
const now = Date.now();
const timeSinceLastRecovery = now - (this.lastRecoveryAttempt || 0);
// Track consecutive media errors for escalated recovery
if (timeSinceLastRecovery < 5000) {
this.mediaErrorCount = (this.mediaErrorCount || 0) + 1;
} else {
this.mediaErrorCount = 1;
}
// Only attempt recovery if more than 2 seconds since last attempt
if (timeSinceLastRecovery > 2000) {
console.log('Non-fatal media error:', data.details, '- attempting recovery');
console.log(`Non-fatal media error (${this.mediaErrorCount}x):`, data.details, '- attempting recovery');
this.lastRecoveryAttempt = now;
// If repeated errors, try swapAudioCodec which can fix audio glitches
if (this.mediaErrorCount >= 3) {
console.log('[HLS] Multiple errors detected, trying swapAudioCodec...');
this.hls.swapAudioCodec();
this.mediaErrorCount = 0;
}
this.hls.recoverMediaError();
// If fragParsingError, also seek forward slightly to skip corrupted segment