How to use MediaInfo CLI to obtain info of a specific audio track by its index?

[pitoloko]

As the title says: how to use MediaInfo CLI to obtain info of a specific audio track by its index?

Using this command directly in the CMD it returns the audio track count of a video file:

mediainfo.exe "C:\file.mp4" "--Inform=General;%AudioCount%"

Now, knowing the amount of audio streams I would like to perform a loop from index 1 (base=1) to "%AudioCount%" to get the "%Format%" field for every audio track.

This is something random that I tried to get the "%Format%" field for audio track with index=1 but of course it does not work:

mediainfo.exe "C:\file.mp4" "--Inform=Audio;--StreamKindPos=1;%Format%"

I'm just trying to figure what is the correct syntax to use in mediainfo CLI, I did a lot of research in Google results and I found none commentary talking about how to do this,
however I know this can be done, I mean I know mediainfo can obtain info of a specific stream index, at least using mediainfo native library instead of the CLI program (but I need to use the CLI program).

[tebasuna51]

...Now, knowing the amount of audio streams I would like to perform a loop from index 1 (base=1) to "%AudioCount%" to get the "%Format%" field for every audio track.

I can suggest you use (Windows CLI):

mediainfo.exe "InputFile" "--Inform=Audio;%%ID%% %%Format%%\r\n" 1>"Info.log"

And use the "Info.log", something like:

2 AC-3
3 EAC-3


to do the loop. You have a sample in ...\MediaInfo\Contrib\CLI_Help.doc

[pitoloko]

@tebasuna51

Thank you, that is not the direct solution that I expected since it involves output redirection to a text file and then parsing the text file, however what you suggested is the only viable solution because MediaInfo, the CLI version, does not support this feature as answered here:

https://sourceforge.net/p/mediainfo/discussion/297610/thread/dafbfedc/

Thanks again.

[qyot27]

Well, you could also pipe the output to grep, assuming that you've set up msys2's /usr/bin directory on the %PATH%*. At least then there's no intermediate text file.

*or on 64-bit Windows 10 with WSL enabled and a distro set up, you just enter the Linux environment and use both mediainfo (either the .exe from the inherited $PATH or one installed through the package manager) and grep in there.

[foxyshadis]

Things like this get a lot easier (though more complicated) if you use the API version with a short piece of software, like a C program or Python script.

MediaInfo CLI cannot do single streams, only all streams of a type. libav/ffmpeg can do what you want, but so can the MediaInfo API.