How to select audio track opening multi-track container in avisynth?

[lovyagin]

Please help!

I have dual-audio mkv file and by default haali media splitter select first track, so when I use script

directshowsorce(file.mkv)

I only rich the first track. Is it possible to select second, third, ... audio track from ogg/mkv/mp4 files to be using avisynth?

[poisondeathray]

I don't think so, at least not with DirectShowSource(). You can remux the mkv with mkvmerge to have 1 audio track, or extract the audio and load it separately

[AlanHK]

You could try FFmpegSource:

FFmpegSource(string source, int vtrack = -1, int atrack = -2, string timecodes, bool vcache = true, string vcachefile, string acachefile, string pp, int ppquality = 6, int threads = -1, int seekmode = 1)

Try different values of atrack:

atrack & vtrack: Track number as seen by the relevant demuxer, starts from 0, -1 means it will pick the first suitable track and -2 means it's disabled.

[lovyagin]

You could try FFmpegSource

Thanks a lot for your suggestion!

Oh, I do not know why I could not start ffmpegsource, it says there is no such function or so on. But ffmpegsource2 works fine.

FFMPegSource2("<>.mkv", vtrack = -1, atrack = 2)

selects second audio track.

ffmpegsource2 looks very promising, thanks for suggesting it again.

(poisondeathray, thanks too, but I already know about demuxing)

[AlanHK]

Oh, I do not know why I could not start ffmpegsource, it says there is no such function or so on. But ffmpegsource2 works fine.

Both versions are plugins, not built-in functions. You must have installed ffmpegsource2 (by putting the dll in the plugins folder) previously.

[lovyagin]

Both versions are plugins, not built-in functions. You must have installed ffmpegsource2 (by putting the dll in the plugins folder) previously.

Yep, but is ffms2 is newer version or something completely different? Is it better or worse?

[AlanHK]

Yep, but is ffms2 is newer version or something completely different? Is it better or worse?

Pretty sure it's just version 2 of the same project, but haven't followed the history.

[poisondeathray]

Yes it's a newer version that replaces the old ffmpegsource. It has updated libraries and some new functionality. Read the documenation for more info