Comments (14)
StefH
commented on May 24, 2024
Did you try the same code using a valid example webm file?
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FossaMalaEnt
commented on May 24, 2024
Nope, if you need this test to confim that your package works on my machine I'll immediatly do it, but my requirement is to get the opus audio stream from the webm opus recorded audio from Chrome, It's you're package supposed to works only when reading webm files (FileStream)?
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StefH
commented on May 24, 2024
Can you try this file?
Estas Tonne - Internal Flight Experience (Live in Cluj Napoca).webm
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FossaMalaEnt
commented on May 24, 2024
Just tried the file you provided and with another file i've manually converted with an online converter and it looks working fine, the problem appear only when using audio data streamed from js using the MediaRecorder API.
If can be usefull, this is the MatroskaDocument of your webm file once deserialized:
{
"Ebml": {
"DocType": "webm",
"DocTypeExtension": null,
"DocTypeReadVersion": 2,
"DocTypeVersion": 4,
"EBMLMaxIDLength": 4,
"EBMLMaxSizeLength": 8,
"EBMLReadVersion": 1,
"EBMLVersion": 1,
"Void": null,
"CRC32": null
},
"Segment": {
"Attachments": null,
"Chapters": null,
"Clusters": [Too long
],
"Cues": {
"CuePoints": [Too long
],
"Void": null,
"CRC32": null
},
"Info": {
"ChapterTranslate": null,
"DateUTC": null,
"Duration": 419941.0,
"MuxingApp": "google/video-file",
"NextFilename": null,
"NextUID": null,
"PrevFilename": null,
"PrevUID": null,
"SegmentFamily": null,
"SegmentFilename": null,
"SegmentUID": null,
"TimestampScale": 1000000,
"Title": null,
"WritingApp": "google/video-file",
"Void": null,
"CRC32": null
},
"SeekHead": {
"Seek": {
"SeekID": "HFO7aw==",
"SeekPosition": 218,
"Void": null,
"CRC32": null
},
"Void": null,
"CRC32": null
},
"Tags": null,
"Tracks": {
"TrackEntries": [
{
"AttachmentLink": null,
"Audio": {
"BitDepth": 16,
"ChannelPositions": null,
"Channels": 2,
"OutputSamplingFrequency": null,
"SamplingFrequency": 48000.0,
"Void": null,
"CRC32": null
},
"BlockAdditionMapping": null,
"CodecDecodeAll": 0,
"CodecDelay": 6500000,
"CodecDownloadURL": null,
"CodecID": "A_OPUS",
"CodecInfoURL": null,
"CodecName": null,
"CodecPrivate": "T3B1c0hlYWQBAjgBgLsAAAAAAA==",
"CodecSettings": null,
"ContentEncodings": null,
"DefaultDecodedFieldDuration": null,
"DefaultDuration": null,
"FlagDefault": 0,
"FlagEnabled": 0,
"FlagForced": 0,
"FlagLacing": 0,
"Language": "eng",
"LanguageIETF": null,
"MaxBlockAdditionID": 0,
"MaxCache": null,
"MinCache": 0,
"Name": null,
"SeekPreRoll": 80000000,
"TrackNumber": 1,
"TrackOffset": null,
"TrackOperation": null,
"TrackOverlay": null,
"TrackTimestampScale": 0.0,
"TrackTranslate": null,
"TrackType": 2,
"TrackUID": 27231307933070081,
"TrickMasterTrackSegmentUID": null,
"TrickMasterTrackUID": null,
"TrickTrackFlag": null,
"TrickTrackSegmentUID": null,
"TrickTrackUID": null,
"Video": null,
"Void": null,
"CRC32": null
}
],
"Void": null,
"CRC32": null
},
"Void": null,
"CRC32": null
}
}
and this is the same obj but after a webm audio stream from Chrome:
{
"Ebml": {
"DocType": "webm",
"DocTypeExtension": null,
"DocTypeReadVersion": 2,
"DocTypeVersion": 4,
"EBMLMaxIDLength": 4,
"EBMLMaxSizeLength": 8,
"EBMLReadVersion": 1,
"EBMLVersion": 1,
"Void": null,
"CRC32": null
},
"Segment": {
"Attachments": null,
"Chapters": null,
"Clusters": null,
"Cues": null,
"Info": {
"ChapterTranslate": null,
"DateUTC": null,
"Duration": null,
"MuxingApp": "Chrome",
"NextFilename": null,
"NextUID": null,
"PrevFilename": null,
"PrevUID": null,
"SegmentFamily": null,
"SegmentFilename": null,
"SegmentUID": null,
"TimestampScale": 1000000,
"Title": null,
"WritingApp": "Chrome",
"Void": null,
"CRC32": null
},
"SeekHead": null,
"Tags": null,
"Tracks": {
"TrackEntries": [
{
"AttachmentLink": null,
"Audio": {
"BitDepth": 32,
"ChannelPositions": null,
"Channels": 1,
"OutputSamplingFrequency": null,
"SamplingFrequency": 48000.0,
"Void": null,
"CRC32": null
},
"BlockAdditionMapping": null,
"CodecDecodeAll": 0,
"CodecDelay": null,
"CodecDownloadURL": null,
"CodecID": "A_OPUS",
"CodecInfoURL": null,
"CodecName": null,
"CodecPrivate": "T3B1c0hlYWQBAQAAgLsAAAAAAA==",
"CodecSettings": null,
"ContentEncodings": null,
"DefaultDecodedFieldDuration": null,
"DefaultDuration": null,
"FlagDefault": 0,
"FlagEnabled": 0,
"FlagForced": 0,
"FlagLacing": 0,
"Language": null,
"LanguageIETF": null,
"MaxBlockAdditionID": 0,
"MaxCache": null,
"MinCache": 0,
"Name": null,
"SeekPreRoll": 0,
"TrackNumber": 1,
"TrackOffset": null,
"TrackOperation": null,
"TrackOverlay": null,
"TrackTimestampScale": 0.0,
"TrackTranslate": null,
"TrackType": 2,
"TrackUID": 8083526733988260,
"TrickMasterTrackSegmentUID": null,
"TrickMasterTrackUID": null,
"TrickTrackFlag": null,
"TrickTrackSegmentUID": null,
"TrickTrackUID": null,
"Video": null,
"Void": null,
"CRC32": null
}
],
"Void": null,
"CRC32": null
},
"Void": null,
"CRC32": null
}
}
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FossaMalaEnt
commented on May 24, 2024
Just looked at the console and I noticed the following error (looks different from the debugging context, I don't know why):
ERROR: Segment at position 146 not mapped. Exception: NEbml.Core.EbmlDataFormatException: invalid element size value
at NEbml.Core.EbmlReader.ReadNext()
at Matroska.MatroskaSerializer.Deserialize(Type type, EbmlReader reader)
fail: Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher[8]
Failed to invoke hub method 'SendAudio'.
System.ArgumentNullException: Value cannot be null. (Parameter 'Clusters')
at Matroska.Muxer.OggOpus.OggOpusAudioStreamDemuxer.CopyTo(MatroskaDocument doc, Stream outputStream, OggOpusAudioStreamDemuxerSettings settings)
at Matroska.Muxer.MatroskaDemuxer.ExtractOggOpusAudio(MatroskaDocument doc, Stream outputStream, OggOpusAudioStreamDemuxerSettings settings)
at PROJECT_NAME.API.Hubs.LiveDataHub.SendAudio(ReceiveAudioDTO audioPkt) in PATH_TO_PROJECT\PROJECT_NAME\PROJECT_NAME.API\Hubs\LiveDataHub.cs:line 72
at Microsoft.Extensions.Internal.ObjectMethodExecutor.<>c__DisplayClass33_0.b__0(Object target, Object[] parameters)
at Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher1.ExecuteMethod(ObjectMethodExecutor methodExecutor, Hub hub, Object[] arguments) at Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher1.g__ExecuteInvocation|18_0(DefaultHubDispatcher1 dispatcher, ObjectMethodExecutor methodExecutor, THub hub, Object[] arguments, AsyncServiceScope scope, IHubActivator1 hubActivator, HubConnectionContext connection, HubMethodInvocationMessage hubMethodInvocationMessage, Boolean isStreamCall)
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StefH
commented on May 24, 2024
Can you provide your file here as attachment?
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FossaMalaEnt
commented on May 24, 2024
I used this code to save the file after recording the audio:
this.mediaRecorder.ondataavailable = (e) => {
const a = document.createElement("a");
document.body.appendChild(a);
const url = window.URL.createObjectURL(e.data);
a.href = url;
a.download = "test.webm";
a.click();
window.URL.revokeObjectURL(url);
document.body.removeChild(a);
//...
}
Here the test file recorded and saved with the posted code:
test.webm
The problem persist when I try to extract the ogg from this webm, but the default media player of windows 10/11 can play the audio without problems.
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StefH
commented on May 24, 2024
It can be that this file follows a newer EBML / Matroska specification.
I'll take a look if I can update some code...
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StefH
commented on May 24, 2024
@FossaMalaEnt
I've made a fix.
Can you try version 0.0.11-preview-01. ?
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StefH
commented on May 24, 2024
@FossaMalaEnt did you have time to test that preview version?
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FossaMalaEnt
commented on May 24, 2024
@StefH, sorry for the delay. I downloaded the code from the "issue16" branch to give it a try, but I'm having trouble compiling it in both VS 2019 and 2022. It seems that VS is unable to locate the "Span<>" class. Have you published the DLL somewhere?
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StefH
commented on May 24, 2024
I did push version 0.0.11-preview-01
Make sure to enable preview in VS:
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StefH
commented on May 24, 2024
@FossaMalaEnt
Did you have time to validate that preview version?
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StefH
commented on May 24, 2024
@FossaMalaEnt
Did you have time to validate that preview version?
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