保存本地视频黑屏，但是有声音，

[shangshuaibo]

保存视频操作代码如下，按照官方实例写的 room = LiveKit.create( appContext = applicationContext, overrides = LiveKitOverrides( javaAudioDeviceModuleCustomizer = { builder -> builder.setSamplesReadyCallback { samples -> videoFileRenderer?.onWebRtcAudioRecordSamplesReady(samples) } } ) )

track?.addRenderer(videoFileRenderer)

private fun disconnectRoom() { videoFileRenderer?.release() videoFileRenderer = null }

保存的时候报错如下，保存下来的视频是黑屏，有声音，文件特别小，时长好像还少了几秒

Stop() called but track is not started or stopped Muxer has been released! java.lang.IllegalStateException: Muxer has been released! at android.media.MediaMuxer.writeSampleData(MediaMuxer.java:731) at cn.jucheng.www.utils.VideoFileRenderer.drainAudio(VideoFileRenderer.java:279) at cn.jucheng.www.utils.VideoFileRenderer.lambda$onWebRtcAudioRecordSamplesReady$4$cn-jucheng-www-utils-VideoFileRenderer(VideoFileRenderer.java:322) at cn.jucheng.www.utils.VideoFileRenderer$$ExternalSyntheticLambda4.run(Unknown Source:4) at android.os.Handler.handleCallback(Handler.java:966) at android.os.Handler.dispatchMessage(Handler.java:110) at android.os.Looper.loopOnce(Looper.java:205) at android.os.Looper.loop(Looper.java:293) at android.os.HandlerThread.run(HandlerThread.java:110)

[davidliu]

Sorry, we took the code from elsewhere and it seems to be pretty old. I don't really know MediaCodec usage very well myself, so it's unlikely we'll be able to fix up the example code here for a while.

You can use the original VideoFileRenderer.java provided by libwebrtc, but be warned that this writes raw uncompressed frames and will result in very large video files.

[shangshuaibo]

Sorry, we took the code from elsewhere and it seems to be pretty old. I don't really know MediaCodec usage very well myself, so it's unlikely we'll be able to fix up the example code here for a while.

You can use the original VideoFileRenderer.java provided by libwebrtc, but be warned that this writes raw uncompressed frames and will result in very large video files.

您好，我直接运行的官方sample-app-record-local，只修改了url和token

保存的视频也是黑屏

我想知道是手机问题吗，还是说移动端sdk和后台sdk版本必须要一致才可以

[davidliu]

The backend SDK won't have any relevancy here as the example code for recording the video. Your best bet would be to look up working MediaCodec examples for recording a Surface and going from there.

[shangshuaibo]

The backend SDK won't have any relevancy here as the example code for recording the video. Your best bet would be to look up working MediaCodec examples for recording a Surface and going from there.

通过以上日志您能看出来MediaCodec有什么问题吗

[shangshuaibo]

The backend SDK won't have any relevancy here as the example code for recording the video. Your best bet would be to look up working MediaCodec examples for recording a Surface and going from there.

encoder output format changed: {max-bitrate=6000000, csd-1=java.nio.HeapByteBuffer[pos=0 lim=8 cap=8], color-transfer=3, mime=video/avc, width=960, bitrate=6000000, color-range=2, frame-rate=30, color-standard=2, height=540, csd-0=java.nio.HeapByteBuffer[pos=0 lim=22 cap=22]}

[davidliu]

通过以上日志您能看出来MediaCodec有什么问题吗

Unfortunately I didn't write the above code (the original is from https://github.com/flutter-webrtc/flutter-webrtc/blob/main/android/src/main/java/com/cloudwebrtc/webrtc/record/VideoFileRenderer.java) and I don't know much about MediaCodec to help here.

[tombang]

你好，我这里出现了相同的问题，请问你那边有解决吗？