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fix(android): cap demuxer buffers + sync mpv dispose

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This commit is contained in:
edde746
2026-03-02 02:30:48 +01:00
parent f96ef0740d
commit 36277076bd
3 changed files with 44 additions and 6 deletions
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lib/screens/video_player_screen.dart
+24
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@@ -1,5 +1,6 @@
import 'dart:async';
import 'dart:io';
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:plezy/widgets/app_icon.dart';
@@ -418,6 +419,29 @@ class VideoPlayerScreenState extends State<VideoPlayerScreen> with WidgetsBindin
if (bufferSizeMB > 0) {
final bufferSizeBytes = bufferSizeMB * 1024 * 1024;
await player!.setProperty('demuxer-max-bytes', bufferSizeBytes.toString());
// Set back-buffer to 1/4 of forward buffer
final backBytes = bufferSizeBytes ~/ 4;
await player!.setProperty('demuxer-max-back-bytes', backBytes.toString());
}
if (Platform.isAndroid) {
// Cap demuxer buffers based on device heap to prevent OOM crashes.
// Without limits, mpv defaults can consume 225MB+ just for demuxer
// buffering, which combined with decoded frames and GPU textures
// exhausts the process address space on memory-constrained devices.
final heapMB = await PlayerAndroid.getHeapSize();
if (heapMB > 0) {
final autoBackMB = heapMB <= 256 ? 16 : (heapMB <= 512 ? 32 : 48);
if (bufferSizeMB == 0) {
// Auto mode: cap both forward and back buffer based on heap
final autoForwardMB = heapMB <= 256 ? 32 : (heapMB <= 512 ? 64 : 100);
await player!.setProperty('demuxer-max-bytes', '${autoForwardMB * 1024 * 1024}');
await player!.setProperty('demuxer-max-back-bytes', '${autoBackMB * 1024 * 1024}');
} else {
// Manual mode: cap back-buffer relative to heap if 1/4 ratio is too high
final maxBackBytes = min(bufferSizeMB * 1024 * 1024 ~/ 4, autoBackMB * 1024 * 1024);
await player!.setProperty('demuxer-max-back-bytes', maxBackBytes.toString());
}
}
}
await player!.setProperty('msg-level', debugLoggingEnabled ? 'all=debug' : 'all=error');
await player!.setLogLevel(debugLoggingEnabled ? 'v' : 'warn');