#103 display information about audio tracks

[Thorsten Maier]

sometimes, avidemux does not give enough information in the dialog to select an audio track to identify all tracks. e.g. for a TS with this ffprobe output:

    Stream #0:1[0x296](NAR): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s
    Stream #0:2[0x295](eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s

Both tracks are shown as MP2, Stereo, 128kbps, Unknown language.
This is not useful to identify the tracks.

I would propose to have the option to display the stream id (0x295/0x296) somewhere in the dialog. Probably not visible by default, but still somehow accessible.

Also, I wonder why eng is not correctly identified, but just solving that could still lead to ambiguous situations.