本地化
Subtitle Translation & Video Localization: Why Word-for-Word Doesn't Work
Taking a video to an overseas market runs into the physics of subtitles: reading speed is capped and the picture doesn't wait. Here's how to choose between subtitles, dubbing and voice-over, why subtitles must be condensed and broken at shot changes, how expansion between languages forces re-timing, and how to pick formats.
Contents
Pushing a product video into an overseas market is only partly a translation job. Subtitles have their own physics: there's a ceiling on how fast people read, and the picture doesn't wait. Here's how to choose between subtitles and voice, and why subtitle translation isn't ordinary translation.
First choose the format: subtitles, dubbing, or voice-over
- Subtitles: cheapest and fastest, and they keep the original audio — the most natural choice when a founder or spokesperson is on camera, or for interviews.
- Dubbing: the audience doesn't have to read, which suits longer training and demo videos, but costs and timelines are far higher.
- Voice-over: original audio ducked under a translated narration, common for documentary-style company profiles.
For most export product videos, exhibition videos and e-commerce clips, subtitles are the best value.
Subtitle translation isn't "translating the script"
- There is a character budget: how much fits on a line, a maximum of two lines on screen, and a minimum time each subtitle must stay up. The translation often has to be condensed — keeping the meaning while cutting redundancy, not rendering word for word.
- It has to follow the picture: subtitles should break at shot changes rather than run across a cut, and when one sentence splits into two cues, the split should fall at a natural point in the sense.
- Languages expand and contract: Chinese into English usually grows, English into Chinese usually shrinks — so line lengths and durations must be re-fitted rather than inherited from the source timing.
- On-screen text counts too: product specs, chart labels, end cards. Translate only the dialogue and leave a screen of Chinese UI, and the viewer is still lost.
Delivery formats
Commonly SRT / VTT (plain-text timed files, widely supported and easy to revise later) and ASS (supports styling and positioning). You can deliver soft subtitles (viewer-toggleable, and indexable on most platforms) or burned-in subtitles (full control of styling, but can't be switched off). Choose according to where you're publishing.
Always watch it once before publishing
The usual subtitle failure isn't a mistranslation — it's timing drift, ugly line breaks, or a final cue cut off. Watching the finished cut end to end with the subtitles on catches more than any checklist.
For the website and interface side, see Website & Software Localization. Tell us the video length, language direction, whether you need timing/spotting, and the target platform, and we'll quote for what you need.
