Language property for video tracks in MKV

[mantis2892]

The MKV container allows one to set a language for any given track, including video tracks. For subtitles and audio tracks language makes complete sense, but is there any case where a video track would be a specific language (most of the time they are simply undefined)?

[ProWo]

The language tag on the video track effectively makes no sense.

[sneaker]

Imagine Star Wars movies' opening text.
Or other movies with .. "deep" .. translations, see the chat texts in "Searching" (2018):
https://youtu.be/3Ro9ebQxEOY?t=10
https://youtu.be/kU5ZtT5B0Qs?t=26

[Selur]

Another example is 'Demolition Man' where depending on the country/language scence change,.. (different restaurants, commercials,...)

[Cornucopia]

Makes perfect sense to me. Mkv as well as EVERY OTHER format has the ability to have multiple video streams, it's just that most uses (other than stereoscopic, or specialty scientific, or DVD/BD multiangle) don't take advantage of the fact, so most players aren't built to gracefully accommodate more than 1 at a time.

Tying that in to onscreen language choice is a natural use case option.

Scott

[mantis2892]

Thank you. I suppose for movies with different sequences in different countries (I wasn't aware of this) and those with hardcoded text like text messages etc, it makes sense.