
SRT, VTT, and ASS: Subtitle Formats Explained and When to Use Each
Choosing a subtitle format determines what styling you can apply, which platforms will accept your file, and how much information survives conversion.
Clear, useful guides for teams creating multilingual video, audio, and learning experiences.

Choosing a subtitle format determines what styling you can apply, which platforms will accept your file, and how much information survives conversion.

Nonprofits face a version of the localization problem that commercial organizations do not: the languages with the greatest need are often the ones with the least tooling support.

The hardest part of localizing product video is not the language. It is keeping the video consistent with an interface that ships changes every week.

Legal terminology does not translate between systems because the underlying concepts differ. A term that has no equivalent cannot be given one by a translator.

In healthcare video, a translation error is not an embarrassment — it is a patient safety event. The workflow has to be built around that fact.

Reels sit inside an ecosystem of Stories, posts, and profile copy. Translating the video alone leaves most of the localization job undone.

Short-form video punishes translation mistakes faster than any other format. A hook that lands three seconds late has already lost the viewer.

Sweden subtitles almost everything and speaks excellent English, which makes Swedish localization a question of search reach and consumer conversion rather than comprehension.

Indonesian is one of the largest audiences reachable with a single language and one of the least linguistically demanding to localize into — but register choice still determines whether content connects.

Thai writes without spaces between words, which turns subtitle line breaking from a formatting task into a linguistic one that automated tools routinely get wrong.