The Lounge is rated PG. If you're about to post something you wouldn't want your
kid sister to read then don't post it. No flame wars, no abusive conduct, no programming
questions and please don't post ads.
I think it's a question of context. In certain contexts to call them a language is a non sequitur but in a lower level of context they fit as in a medium to transmit data. They don't qualify as a medium to compose a computer program.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
VLC is rendering it as 2 views side by side going on at the same time.
The MKV format is actually an archive container like a TAR, ZIP or RAR container. There could be one, two or hundreds of audio/videos within the container. Search engine nomenclature for a ZIP file would be "How extract Zip file"