When you append video, the audio is reset to original tracks. Or you lost track what carries what audio track. Can we have some indicator showing available tracks and its content?
1: Stereo 2: AC3 2.1 3: AC3 5.1 4: or
1: 2: 3: 4:(https://avidemux.org/smif/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2Fa%2Fab%2F2_0_channels_%28stereo%29_label.svg%2F120px-2_0_channels_%28stereo%29_label.svg.png&hash=1671ae9beddfea08f3883f95cc2e6e7e1e1ac5e4)(https://avidemux.org/smif/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2Fe%2Fee%2F2_1_channels_%28stereo_subwoofer%29_label.svg%2F120px-2_1_channels_%28stereo_subwoofer%29_label.svg.png&hash=654e73a6d2d52b85cc365e9700e79490b615227a)(https://avidemux.org/smif/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2Fc%2Fcc%2F5_1_channels_%28surround_sound%29_label.svg%2F120px-5_1_channels_%28surround_sound%29_label.svg.png&hash=19eabad6753669fa7b0d0c75c868fc5b05bef381)
Would use smaller icons, don't need to be this big ;) perhaps with track indicator in the middle of it?
Source graphics (http://en.wikipedia.org/w/index.php?title=Special:Search&search=channel%20label&fulltext=Search&profile=images&redirs=1)
QuoteThis is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository