AI subtitle translator for SRT and VTT files

How the translation keeps your timing

A subtitle file is two things: timing and text. The translator sends only the text of each numbered line, in batches of 80, and asks the model to return exactly one translated line per ID. The timecodes never leave your browser and are put back unchanged, so the translated file stays in sync with the video. If a line ever comes back missing, the original is kept so nothing shifts.

Getting a natural translation

• Add context. One sentence in the Context field (“gaming stream, casual, lots of slang” or “medical lecture”) noticeably improves word choice.
• Check reading speed afterwards. Some languages run 20 to 30% longer than English. Lines flagged amber in the Edit tab can be condensed with “Shorten fast lines”.
• Proper names are kept as written; fix any that the original transcription got wrong before translating.
• Dual-language puts the translation on top and the original underneath, which language learners and bilingual audiences like.

Machine translation and quality

AI translation is good enough for most online video, but professional releases still get a human review, especially for humour, idioms and legal or medical content. Treat the result as a strong first draft: the editor shows every line next to the video so the review goes quickly.