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FFMS / ffms2

An FFmpeg based source library and Avisynth/VapourSynth plugin for easy frame accurate access
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FFMS2 v2.22 doesn't work when trying to extract audio from multi-AC3 VOB file ("No audio track found") #263

Closed unv-unv closed 7 years ago

unv-unv commented 8 years ago

FFMS2 v2.22 doesn't work when trying to extract audio from multi-AC3 VOB file.

Test file: https://drive.google.com/file/d/0BxITyeHd2HuMQjNmSjhuZHBDTG8/view?usp=sharing (this is a part of "Man of La Mancha" DVD movie containing "The Impossible Dream" song by Don Quixote).

This 1GB VOB file contains 5 audio streams (AC3, 48 kHz) and 9 subtitle streams. It is normally played by Media Player Classic from latest K-Lite Codec Pack (allowing selecting any audio/subtitle stream).

Tried several script variants, all returning error "FFAudioSource: No audio track found (FFMS2.avsi, line 40)":

1) Calling FFMpegSource2 (with audio autoselect):

file = "VTS_01_5.VOB" video = FFMpegSource2(file, atrack=-1) video

2) Calling FFAudioSource explicitly:

file = "VTS_01_5.VOB" audio = FFAudioSource(file, track=-1) video = FFVideoSource(file) video = AudioDub(video, audio) video

3) Calling FFIndex first:

file = "VTS_01_5.VOB" FFIndex(file) video = FFMpegSource2(file, atrack=-1) video

Of course, I deleted VTS_01_5.VOB.ffindex file before each run. No effect.

I tried several versions of FFMS2: 2.22, 2.21, 2.20, 2.19 (copying FFMS2.avsi, ffms2.dll, ffms2.lib, ffmsindex.exe from x86 folder into AviSynth plugin folder and deleting .ffindex file after each downgrade) - not working in any version.

Also I tried manually specifying atrack (1, 2, 3, 4, 5). In this case another error message was returned: "FFAudioSource: Audio track contains no audio frames (FFMS2.avsi, line 40)".

Also I tried manually specifying atrack from subtitles track range (6, 7, 8, 9, 10, 11, 12, 13, 14, 15 - subtitles tracks and video). Then it logically returned error "FFAudioSource: Not an audio track (FFMS2.avsi, line 40)".

And finally I tried to specify track out of range (16). And the error was "FFAudioSource: Out of bounds track index selected (FFMS2.avsi, line 40)".

When opening file with audio track disabled (atrack=-2), it opens OK (but, of course, without audio).

So it proves that the file contains 5 audio tracks (numbered from 1 to 5) but they're somehow not recognized by FFMS2 of the latest version. Could you please fix it?

myrsloik commented 7 years ago

Seems to work in the latest build. Try this one: https://dl.dropboxusercontent.com/u/73468194/ffms2-2016-10-10.7z