Keep the timing attached
Translate works with timed transcript segments rather than a loose block of text. Segment order and timing carry into the translated SRT and VTT outputs.
Choose subtitle files or a durable copy
SRT and VTT stay editable and work with players and publishing tools that accept them. Burn subtitles makes a new H.264/AAC MP4 with the words always visible. The source is left alone.
Treat translation as a draft when the stakes are high
Quality changes with the recording, source language, target language and chosen local model. Review names, specialist terms and consequential wording before publication.