Keep the MP4 workflow
Start with a common MP4 source and render a subtitled MP4 for straightforward publishing.
MP4 video translation
Translate an MP4 video online
Upload an MP4 file, convert its speech into timed text and translate the transcript for another audience. Download the translated subtitles separately or render them into an MP4 that is ready to share.
What happens when an MP4 is translated?
The tool uploads the source video to private temporary cloud storage, extracts minute-long audio chunks and generates a timestamped transcript. AI translation converts the transcript into the target language while retaining subtitle timing. Cloud rendering then combines your chosen subtitle version with the video.
Key benefits
Download SRT separately
Use translated subtitles in an editor or platform without permanently embedding them.
Resumable cloud processing
Upload once, then close the tab while audio extraction, transcription and subtitle rendering continue in the cloud.
How it works
- 1Choose the MP4 file and confirm its spoken language.
- 2Select a target language and begin transcription and translation.
- 3Read the result while comparing it with the source transcript.
- 4Download translated SRT captions or render a new subtitled MP4.
Common use cases
- Localize MP4 tutorials for customers in another market.
- Translate recorded presentations and internal training material.
- Prepare captioned MP4 clips for websites and social channels.
Frequently asked questions
Will translating an MP4 replace the original audio?
Subtitle translation keeps the original audio untouched. You can optionally generate an AI dubbed voice track for the translated language and mix it into the rendered video from the editor. See AI video dubbing for the supported languages and voices.
Can I keep subtitles separate from the MP4?
Yes. Download original, translated or bilingual SRT files instead of rendering them into the video.
Is the complete MP4 uploaded for processing?
Video preparation and rendering occur in isolated cloud media workers. Temporary source and generated media are removed after 7 days (rendered videos after 3 days).