Closed captions aim to capture all events in the audio track besides dialogue. They may well indicate gunshots, screaming, a song being played etc. "Closed" means they can be turned off. 

Subtitles only capture what is spoken on screen. They are straight transcriptions or translations of the dialogue. We require all English-language content submitted with closed captions.

Closed captions are mainly designed for hearing impaired viewers. However, most streaming channels these days mandate closed captions for reasons besides physiological hearing issues. Your audience will often watch films on a laptop in a noisy cafe, or a tablet on a commuter train, or a TV in a bar - or simply at home in the kitchen with the sound of cooking and kids. Closed captions allow consumers in all these scenarios to enjoy your content comfortably.

File Formats

We prefer SubRip (.srt) format in plain UTF-8. We recommend using a text editor such as TextWrangler to open and re-save your .srt files in UTF-8.

Scenarist Closed Captions (.scc) is also accepted. A frame rate must be selected for SCC files. Learn more about SCC.

For other file formats, you can use the below apps or web apps to convert to SubRip.

Additional Requirements

  • All text tracks should be complete and accurate, and should stay in sync with the video at all time.
  • Punctuation is important.
  • Avoid long lines. Each line should contain less than 50 characters, and a maximum of one line break. 
  • Avoid formatting tags.

We recommend performing an eyeball test by playing back your video in our system with the text track enabled and jumping to a few random spots.

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