Add support for subtitles from multiple languages

[sramshetty]

Feature

Aim is to capture all requested subtitles with the same clip segment, i.e. subtitles share the same clip time segment.

• could do this in either a clip-first or lang-first manner

Notes:

Additionally, noticed that yt-dlp doesn't like playlist links and causes issues since "requested_subtitles" and other keys are not present; however the metadata returned in info_dict can be used to parse all subtitles from full list of videos in playlist. Maybe making that note for video set curation could help others if I didn't miss a preexisting warning.

[sramshetty]

Could use a preliminary review since I'm not sure if these changes will negatively effect other parts of the system or future plans, thanks!

[iejMac]

looks mostly ok to me. I'm assuming you've tried it out with clipping and it gives expected results?

[sramshetty]

looks mostly ok to me. I'm assuming you've tried it out with clipping and it gives expected results?

was working for me, will need to verify after making the changes you recommended

[sramshetty]

• add an example case with both 'first' and 'all' results

[sramshetty]

@iejMac Think the necessary changes are done and was able to test that I'm getting what is expect.

[sramshetty]

sorry about the lint stuff, but think I finally got what I could resolved.

However, pylint complains about video2dataset\dataloader\video_decode.py:59:35: W1116: Second argument of isinstance is not a type (isinstance-second-argument-not-valid-type) which seems to be fixed here so maybe a version thing?

[rom1504]

thanks for the PR @sramshetty !