How to translate subtitles.
AI translation is fast and free; human translation is slow and accurate. The right choice depends on your audience size, content type, and tolerance for cultural mistakes.
Translating subtitles to another language used to be a freelancer-only workflow. AI translation has closed the gap on simple, conversational content — but it still fails on idioms, technical jargon, and culturally-specific references. The 2026 best practice is a hybrid: AI for the first pass, human review for everything that ships to a real audience.
Step by step
- 01Export your source SRTFrom SoCaptions, export the SRT in your original language. SRT is the most-supported format for translation tools and human translators.
- 02AI translation for first passDeepL, Google Translate, and Claude all handle SRT translation via API or paste-in. Quality is 80-90% on conversational content; lower on technical or idiomatic.
- 03Human review for anything publicHire a native speaker to review the AI output, especially for proper nouns, idioms, and culturally-specific references. Cost: $0.50–$2.00 per minute of video runtime.
- 04Upload the translated SRT separatelyDon't replace your original SRT. Add the translated SRT as a separate language track. YouTube, Vimeo, and most platforms support multiple language tracks per video.
- AI handles 80-90% of conversational content well
- Translated SRTs feed each language's search index independently
- Multi-language captions raise total addressable audience 5–10×
- First-pass cost is near-zero for AI translation
- AI fails on idioms, jargon, and culturally-specific references
- Mistranslations damage brand more than missing translations
- Some languages (e.g., low-resource African languages) have weak AI quality
- Right-to-left languages (Arabic, Hebrew) need direction-aware rendering
FAQ
What's the best AI for translating SRT files?+
DeepL is best for European languages. Google Translate is broadest. Claude / GPT-4 are best for nuanced content. Always human-review before publishing.
Should I auto-translate my YouTube SRT into 10 languages?+
Probably not. Pick your top 1–3 audience markets, translate well, and ship. Bad translations to 10 markets hurts your brand more than no translations.
How long does subtitle translation take?+
AI: 30 seconds per SRT. Human review: 30–90 minutes per 10 minutes of video. Full human translation: 4–8 hours per hour of video.
Can I burn translated subtitles into the same video as the original?+
Technically yes, but it crowds the frame. Better: render separate MP4s (one per language) or use soft captions with multiple language tracks.
Burned-in (hardcoded) subtitles become part of the video pixels. They survive every cross-post and every download — at the cost of being un-toggleable. Here's when to use them and how to do it across SoCaptions, ffmpeg, Premiere, and CapCut.
Out-of-sync subtitles come from one of three causes: a fixed offset, a frame-rate mismatch, or progressive drift. Each has a different 5-minute fix.