[Feature Request] Add language label "cmn" (Mandarin Chinese, ISO 639-3)

[Hongyu Shi]

I have encountered some movies with mandarin audio track, but there is no correct label for them. Please consider adding the ISO standard label “cmn“ (Mandarin Chinese).

[Hongyu Shi]

Reference: https://iso639-3.sil.org/code/cmn

[Damiano Galassi]

If I remember correctly the mp4 file format doesn’t use iso 639-3. But it should be possible in the extended language tag.

[Hongyu Shi]

I purchased some movies in iTunes, and found that Apple uses ISO 639-3 in their m4v files.

Here is proof:

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[Damiano Galassi]

Can you open it in https://subler.org/downloads/MP4Dump.zip at the info level and send me the output?

[Hongyu Shi]

I found this line in your log. It does say “cmn“

[Hongyu Shi]

full log here

[Damiano Galassi]

Right that’s the extended language tag, the normal track language is set to ISO-639-2 Chinese.