Translation of video subtitles of promo team

[Johnny Jazeix]

Hi,
I've been discussing with promo on how to help them translate the
subtitles in their videos (for example
https://tube.kockatoo.org/w/symxHCzUj9TA7LZoZagD9c).
In order to not change the process of translators, I told them I can
create a script that will convert the srt files (subtitle file) to po
files. And with the StaticMessages.sh workflow, the translated
subtitles files can be created and uploaded.

I have a few questions regarding the translation process:
* should there be only one po file containing all the translations for
all subtitles files, or one po file per subtitle file?
* There could be issue with display time of texts. Basically, in the
subtitle file, for each line, you tell when the text appears and when
it hides. If a translated text takes more time to be read, the user
might have to pause the video in order to read it which is a bad
experience. To solve this potential issue, I propose to also add in
the messages to translate the timestamp of begin and end, so
translators can also update them if needed.

What do you think?

Cheers,

Johnny