Error Message of "Invalid wave file RIFF header" with various valid wav files

[GFNiko]

I copy/pasted the demo code to the file whisper.cs isntalled the packages in nuget. The only changes I made are changing the models (base to large) and the file name inside Default="" in the'f' Option. The code is besides taht really the same as the demo code of this repo!
The wav files are in the project folder and registered by whisper.net

But, unfortunateIy I get the following error message every time no matter which wav file I try:

   at Whisper.net.Wave.WaveParser.InitializeAsync()
   at Whisper.net.Wave.WaveParser.GetAvgSamplesAsync(CancellationToken cancellationToken)
   at Whisper.net.WhisperProcessor.ProcessAsync(Stream waveStream, CancellationToken cancellationToken)+MoveNext()
   at Whisper.net.WhisperProcessor.ProcessAsync(Stream waveStream, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
   at Program.<<Main>$>g__FullDetection|0_2(Options opt) in C:\Users\huddeij\RiderProjects\whisperTest\whisper2.cs:line 80
   at Program.<<Main>$>g__FullDetection|0_2(Options opt) in C:\Users\huddeij\RiderProjects\whisperTest\whisper2.cs:line 80
   at Program.<<Main>$>g__Demo|0_0(Options opt) in C:\Users\huddeij\RiderProjects\whisperTest\whisper2.cs:line 33
   at CommandLine.ParserResultExtensions.WithParsedAsync[T](ParserResult`1 result, Func`2 action)
   at Program.<Main>$(String[] args) in C:\Users\huddeij\RiderProjects\whisperTest\whisper2.cs:line 13
   at Program.<Main>(String[] args)

The output before the error message:

whisper_model_load: loading model
whisper_model_load: n_vocab = 51865
whisper_model_load: n_audio_ctx = 1500
whisper_model_load: n_audio_state = 1280
whisper_model_load: n_audio_head  = 20
whisper_model_load: n_audio_layer = 32
whisper_model_load: n_text_ctx = 448
whisper_model_load: n_text_state = 1280
whisper_model_load: n_text_head = 20
whisper_model_load: n_text_layer = 32
whisper_model_load: n_mels = 80
whisper_model_load: ftype = 1
whisper_model_load: type = 5
whisper_model_load: mem required = 3557.00 MB (+ 71.00 MB per decoder)
whisper_model_load: adding 1608 extra tokens
whisper_model_load: model ctx = 2950.97 MB
whisper_model_load: model size = 2950.66 MB

I tried the sample wav files from this repo, audio records, converted into wav via cloudconvert and ffmpeg.

Environment:
MS Windows 11 Pro 22H2
.Net v7.0.203
Jetbrains Rider 2023.1.1

What am i doing wrong here?

[sandrohanea]

Hello @GFNiko ,
As you can see, that exception is only thrown if the stream which is provided, doesn't contain RIFF header (as all wave file should do): https://github.com/sandrohanea/whisper.net/blob/b397baa30ae11ede6110dd764c5e2b44a5793bcc/Whisper.net/Wave/WaveParser.cs#LL150C23-L150C45

I suspect you set the file in a different path or you passed a stream which is already consumed.

In order to debug this further you can display the first 4 chars in the header (at like 78 in the demo): using var fileStream = File.OpenRead(opt.FileName);

                var buffer = new byte[4];
		fileStream.Read(buffer, 0, 4);
		Console.WriteLine(System.Text.Encoding.UTF8.GetString(buffer));
		fileStream.Position = 0;

[GFNiko]

Changing the file location helped. Strange behaviour if you ask me. Anyways, thank you very much for your help :)