Auto Captions & Subtitles

What each platform gives you for free

Every major network now writes captions from speech. TikTok does it in the editing screen, Instagram per reel in the reel settings, Snapchat behind the quotation-mark icon on the preview screen, YouTube automatically after upload. They are all good enough for one clip and all share the same weakness: names, brands and numbers.

X is the exception. It does not transcribe your upload at all; you attach a SubRip (.srt) file, and it is strict about the format.

Where the built-in tools stop

Three things send people looking for something else. The transcript stays inside the app, so cutting the same clip for four networks means transcribing it four times. The styling is whatever the platform offers, so a brand look is impossible. And it is one clip at a time, which does not survive agency volume.

That is the case for generating captions yourself: an editable file you keep, one style profile, and a batch route. See the captioning workflow.

Burned in or as a separate file

Attach a subtitle file when viewers should be able to switch language or turn captions off, and when the player supports it. Burn them in when the look matters or the clip will be reposted elsewhere, because a separate file does not travel with the video. Only burned-in captions can carry per-word effects like a karaoke highlight; a subtitle file cannot describe that.

Checking accuracy without watching everything

Sample. Pull ten random thirty-second windows and count only the errors that change meaning. Track that number over time and you have a real quality signal instead of a vendor's accuracy claim. The errors that matter are almost always proper nouns.