Do you simply put the French videos into the same folder as English Videos?
We put videos in a single folder which is the content .
We have a separate database for each of the contents. Example for english we have content_khan_en.sqlite and for French we have content_khan_fr.sqlite.
The file names of each videos, for example hMlnp_LjDbM is stored in the French database. So you don’t have to worry if you just paste new videos in the content as kalite will fetch the video for the current language as it should.