Length and layout
English is about 10–15% shorter than the Vietnamese original. Both languages are written left to right, so the layout does not change — only the wording and line length do.
Tiếng Việt → English
Translate Vietnamese video into English subtitles
Upload a video in Vietnamese. SubFlow transcribes the speech, translates every caption into English, and keeps both languages on the same timeline so you can review them side by side — then export subtitles, a subtitled video, or a English dub.
30 free minutes monthly · No credit card
What changes
Vietnamese and English, side by side.
| Vietnamese (spoken) | English (subtitles) | |
|---|---|---|
| Script | Latin with tone marks | Latin |
| Direction | Left to right | Left to right |
| Reading speed | 15–17 chars/sec | 15–17 chars/sec |
| Line length | about 42 chars | about 42 chars |
| AI dub voice | vi-VN | en-US |
Getting English right
English subtitles read fastest when a line breaks after a clause, not mid-phrase — the editor lets you move the break without touching the timing.
Workflow
From Vietnamese to English in three steps.
Upload the Vietnamese video
Add a video or audio file. SubFlow transcribes the Vietnamese speech into timed captions.
Translate into English
Pick English as the target. Every caption is translated with the surrounding lines as context, then shown beside the original.
Review and export
Fix names and terms, split any caption that runs long, then export English or bilingual subtitles, a subtitled video, or a English dub.
Common questions
Vietnamese to English, answered.
Can SubFlow recognise Vietnamese speech automatically?
Yes. Leave the source on automatic detection or pick Vietnamese yourself. Vietnamese speech is transcribed with full tone marks, which carry meaning and are never dropped.
Will the English subtitles fit on screen?
English reads comfortably at 15–17 characters per second with about 42 characters per line. English is about 10–15% shorter than the Vietnamese original. Review the longest captions and split any that crowd two lines.
Can I dub a Vietnamese video into English?
Yes, on the Pro plan. The English dub uses a en-US voice and is spoken from the translated subtitles, so correcting a line in the editor changes what the voice says.
Can I export Vietnamese and English together?
Yes. Export the English subtitles alone, the original Vietnamese, or a bilingual SRT with both on each caption — or burn either into the video.