AC3 sound sample error

[emveepee]

Describe the bug
An AC3 sample recordings crashes the app with no recovery

To Reproduce
Use the ts file in this for the source to QueryCommandBuilder

crash.zip

Expected behavior
ffmpeg can transcode the sample to wav mp3 etc. Even if the app can't handle it a try/catch loop should be possible.

Screenshots

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at FFmpeg.AutoGen.ffmpeg.swr_convert(FFmpeg.AutoGen.SwrContext*, Byte**, Int32, Byte**, Int32)
   at SoundFingerprinting.Emy.FFmpeg.Audio.AudioConverter.ConvertAndStore(FFmpeg.AutoGen.AVFrame*)
   at SoundFingerprinting.Emy.FFmpeg.Audio.AudioConverter.Convert(FFmpeg.AutoGen.AVFrame*)
   at SoundFingerprinting.Emy.AudioVideo.Data.FFmpegDataService+<>c__DisplayClass7_1.<CreateAudioConverters>b__1(System.Object, SoundFingerprinting.Emy.FFmpeg.Common.FrameEventArgs)
   at SoundFingerprinting.Emy.FFmpeg.Decoder.OnDecoded(FFmpeg.AutoGen.AVFrame*)
   at SoundFingerprinting.Emy.FFmpeg.Decoder.Decode(FFmpeg.AutoGen.AVPacket*)
   at SoundFingerprinting.Emy.FFmpeg.Demuxer.Demux(Double)
   at SoundFingerprinting.Emy.AudioVideo.Data.FFmpegDataService+<ReadAVTrack>d__4.MoveNext()
   at System.Collections.Generic.List`1[[System.__Canon, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]..ctor(System.Collections.Generic.IEnumerable`1<System.__Canon>)
   at System.Linq.Enumerable.ToList[[System.__Canon, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.Collections.Generic.IEnumerable`1<System.__Canon>)
   at SoundFingerprinting.Emy.AudioVideo.Data.FFmpegDataService.ReadTrack(System.String, SoundFingerprinting.Data.MediaType, Double, SoundFingerprinting.Media.AVTrackReadConfiguration)
   at SoundFingerprinting.Emy.FFmpegAudioService.ReadAVTrackFromFile(System.String, SoundFingerprinting.Media.AVTrackReadConfiguration, Double, Double, SoundFingerprinting.Data.MediaType)
   at SoundFingerprinting.Emy.FFmpegAudioService.GetAudioTrack(System.String, Int32, Double)
   at SoundFingerprinting.Emy.FFmpegAudioService.ReadMonoSamplesFromFile(System.String, Int32, Double, Double)
   at SoundFingerprinting.Command.FingerprintCommand+<>c__DisplayClass13_0.<From>b__0()
   at System.Threading.Tasks.Task`1[[System.__Canon, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].InnerInvoke()
   at System.Threading.Tasks.Task+<>c.<.cctor>b__272_0(System.Object)
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(System.Threading.Thread, System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef, System.Threading.Thread)
   at System.Threading.Tasks.Task.ExecuteEntryUnsafe(System.Threading.Thread)
   at System.Threading.Tasks.Task.ExecuteFromThreadPool(System.Threading.Thread)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool+WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()

**Desktop (please complete the following information):**
 - Windows 11 console app

[AddictedCS]

Which version of ffmpeg are you using?

[emveepee]

Which version of ffmpeg are you using?

I tried various versions in the path but right now FFmpeg\bin\x64 is the suggested version https://www.gyan.dev/ffmpeg/builds/packages/ffmpeg-4.4.1-full_build-shared.7z

[AddictedCS]

I've tested it and indeed for the AC3 file it generates a AccessViolationException. I'm not quite sure why that's happening for this particular file. As of now I would suggest converting it to mp3 and feeding the library - I've tested it and it works as expected.

[emveepee]

Yes I tested that before and that works, but the solution doesn't work when processing a directory of files because I can't trap the error and the application aborts which is my major concern.