Video Upload Specs

Last update: 22 Apr 2014    Subtitles  Captions  Specs  Upload 


Recommended: Apple ProRes or Avid DNxHD .mov, stereo audio. No letterbox, interlaced, preroll/postroll AND URLs.


Topic Requirement
Codec Any high quality, preferred: Apple ProRes 422, Avid DNxHD/DNxHR
Frame rate Any progressive, examples: 23.98p, 24p, 25p, 30p, 29.97p
File size Unlimited (200 GB+). The bigger the better.
File format Any common video file container. .mkv and QuickTime .mov preferred
Fast start Enabled (preferred but not required)
Resolution Minimum SD (480 height). Preferred HD (1280 width or more), 2k, 4k, 6k…
Pixel aspect ratio Square pixels only. More info in this help article.
Letterbox No black bars around the picture (preferred)
Pre/post roll None. No slate, slug, bars, tone, cards. Max 1 sec black before and after (preferred)
Audio Preferred: PCM Stereo, single stream. No surround yet, sorry.
Captions Separate SRT file. No burn-in. See our closed captions & subtitles section.

Not accepted:

  • No letterbox
  • No pillarbox
  • No interlaced
  • No burned in subtitles (except trailers)
  • No anamorphic (squeezed) pixels
  • No URLs or promo links (e.g. film website, Facebook page, available to download, etc.) anywhere in the film or trailer, including end credits
  • No real or bogus MPAA rating card
  • No bars, slate, test-tone, pre-roll, post-roll (max. 1 sec of black before film starts or after credits end)
  • No titles or captions outside title-safe area