java.lang.IllegalStateException: Failed to stop the muxer

D/MPEG4Writer(29390): Duration from tracks range is [3819978, 3863500] us
D/MPEG4Writer(29390): Stopping writer thread
D/MPEG4Writer(29390): 0 chunks are written in the last batch
D/MPEG4Writer(29390): Writer thread stopped
E/TranscodeEngine(29390): Unexpected error while transcoding.
E/TranscodeEngine(29390): java.lang.IllegalStateException: Failed to stop the muxer
E/TranscodeEngine(29390): at android.media.MediaMuxer.nativeStop(Native Method)
E/TranscodeEngine(29390): at android.media.MediaMuxer.stop(MediaMuxer.java:466)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.sink.DefaultDataSink.stop(DefaultDataSink.java:218)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.internal.transcode.DefaultTranscodeEngine.transcode(DefaultTranscodeEngine.kt:132)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.internal.transcode.TranscodeEngine$Companion.transcode(TranscodeEngine.kt:48)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.internal.transcode.TranscodeEngine.transcode(Unknown Source:2)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.Transcoder$1.call(Transcoder.java:102)
E/TranscodeEngine(29390): at com.otaliastudios.transcoder.Transcoder$1.call(Transcoder.java:99)
E/TranscodeEngine(29390): at java.util.concurrent.FutureTask.run(FutureTask.java:266)
E/TranscodeEngine(29390): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
E/TranscodeEngine(29390): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
E/TranscodeEngine(29390): at java.lang.Thread.run(Thread.java:919)
I/Decoder(VIDEO,5)(29390): release(): releasing codec. dequeuedInputs=0 dequeuedOutputs=0
E/MediaMuxer(29390): stop() is called in invalid state 3
W/DefaultDataSink(29390): Failed to release the muxer.

Start with DefaultDataSink.stop and DefaultTranscodeEngine.transcode, which are named in the stack trace, and inspect the MediaMuxer lifecycle around the failing stop call. Reproduce the reported transcoding failure if possible; done means the muxer no longer reaches the invalid state and the failure is covered by an appropriate regression check.

Written by the indexing model from the issue text.