When using avformat_close_input to release AVFormatContext, the program crashes directly

[qqJoker]

When I call the Dispose() method of VideoStreamDecoder, the program gets stuck at ffmpeg.avformat_close_input() for a moment, and then crashes without any prompt.And this is the release action inside my Dispose ()method:

[Ruslan-B]

I would advise you enable ffmpeg logging like original example does and start troubleshoot from this point.
As the way you are asking for help suboptimal.