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The VideoFFmpegComponent audio and video streams are now re-synchronized after resuming the appliction

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This commit is contained in:
Leon Styhre 2024-02-08 19:27:15 +01:00
parent 2e5f56970a
commit bd6c9646fc
1 changed files with 11 additions and 6 deletions
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17
es-core/src/components/VideoFFmpegComponent.cpp
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@ -317,14 +317,19 @@ void VideoFFmpegComponent::updatePlayer()
1000000000.0l};
// If there were more than 2 seconds since the last update then it's not a normal delay, for
// example the application may have been suspended or the computer was resumed from sleep.
// In this case don't proceed and instead wait for the next update. This avoids a massive
// fast-forward as the frame processing would otherwise have tried to catch up. This may
// not result in perfect video and sound synchronization on some platforms, for example
// on Android the audio buffers are emptied before suspending the application after the
// video processing has already been halted.
// example the application may have been suspended or the computer may have been resumed from
// sleep. In this case don't proceed and instead wait for the next update. This avoids a
// massive fast-forward as the frame processing would otherwise have tried to catch up.
// The frame queues are emptied as well and the audio stream is cleared in order to
// re-synchronize the streams. This is neeeded as some platforms like Android keep processing
// the audio buffers before suspending the application (i.e. after rendering has stopped).
if (deltaTime > 2.0) {
AudioManager::getInstance().clearStream();
mTimeReference = std::chrono::high_resolution_clock::now();
while (mAudioFrameQueue.size() > 1 && mVideoFrameQueue.size() > 1 &&
mAudioFrameQueue.front().pts > mVideoFrameQueue.front().pts) {
mVideoFrameQueue.pop();
}
return;
}