The video shows subtitles in two languages for each spoken sentence. Does this use ASR or the official multilingual subtitles? I found that even monolingually,

The video shows subtitles in two languages for each spoken sentence. Does this use ASR or the official multilingual subtitles? I found that even monolingually, subtitles can sometimes divert from what is actually spoken on screen. I assume that if just the existing subtitles are used, they are not exact translations from one another either? Also, longer dialogs are often split into two screens - this should be an additional synchronization challenge between the two languages, right?