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perf: optimization profile for Live TV (fast start, adaptive buffer)

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Michael committed 2025-12-16 22:54:19 +01:00
1 parent 77d074e412
commit 411c15f276
1 file changed
+31 -13
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lib/mobile/features/iptv/screens/native_player_screen.dart
+31 -13
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@@ -138,17 +138,37 @@ class _NativePlayerScreenState extends ConsumerState<NativePlayerScreen>
// Tuned to eliminate micro-stuttering during live TV playback
// Increased buffers for smoother playback at cost of ~100MB RAM
// LARGE Cache for smoother playback (100MB = ~2 min of HD stream)
// Unified Buffering Logic (Live vs VOD)
(_player.platform as dynamic)?.setProperty('cache', 'yes');
(_player.platform as dynamic)
?.setProperty('cache-secs', '120'); // 2 minutes cache
(_player.platform as dynamic)?.setProperty(
'demuxer-max-bytes', '100000000'); // 100MB buffer (doubled)
(_player.platform as dynamic)
?.setProperty('demuxer-max-back-bytes', '20000000'); // 20MB back buffer
(_player.platform as dynamic)?.setProperty('cache-pause-initial', 'yes');
(_player.platform as dynamic)?.setProperty('cache-pause-wait',
'5'); // Wait 5s before resuming after buffer underrun
if (widget.streamType == StreamType.live) {
// LIVE PROFILE: Faster startup, lower latency, smaller buffer
debugPrint('MediaKitPlayer: Applying LIVE optimization profile');
(_player.platform as dynamic)?.setProperty('cache-secs', '30');
(_player.platform as dynamic)
?.setProperty('demuxer-max-bytes', '32000000'); // 32MB
(_player.platform as dynamic)
?.setProperty('demuxer-readahead-secs', '20');
(_player.platform as dynamic)
?.setProperty('demuxer-max-back-bytes', '10000000'); // 10MB back
// Start playing as soon as possible, don't wait for cache fill
(_player.platform as dynamic)?.setProperty('cache-pause-initial', 'no');
} else {
// VOD PROFILE: Max stability, large buffer
debugPrint('MediaKitPlayer: Applying VOD optimization profile');
(_player.platform as dynamic)?.setProperty('cache-secs', '120');
(_player.platform as dynamic)
?.setProperty('demuxer-max-bytes', '100000000'); // 100MB
(_player.platform as dynamic)
?.setProperty('demuxer-readahead-secs', '120');
(_player.platform as dynamic)
?.setProperty('demuxer-max-back-bytes', '20000000'); // 20MB back
// Wait a bit to fill buffer for smooth playback
(_player.platform as dynamic)?.setProperty('cache-pause-initial', 'yes');
(_player.platform as dynamic)?.setProperty('cache-pause-wait', '5');
}
// Audio/Video Sync - critical for smooth playback
(_player.platform as dynamic)
@@ -174,9 +194,7 @@ class _NativePlayerScreenState extends ConsumerState<NativePlayerScreen>
(_player.platform as dynamic)?.setProperty('demuxer-lavf-o',
'live_start_index=-1,analyzeduration=10000000,probesize=5000000');
// Prevent stalls with more aggressive read-ahead
(_player.platform as dynamic)?.setProperty(
'demuxer-readahead-secs', '120'); // Read 2 min ahead (doubled)
// Prevent stalls (readahead already set above)
(_player.platform as dynamic)
?.setProperty('hr-seek', 'yes'); // High-res seeking
(_player.platform as dynamic)