Our player supports captions in two formats:

  • WebVTT, a plain text format that's part of the HTML5 standard.
  • SRT, a plain text format.

VTT captions are preferred, since they are part of the HTML5 standard. Our player supports both formats across all browsers though, in both Flash and HTML5 mode. The only exception is playback in fullscreen on iOS, since the native fullscreen mode does not allow the player to print captions over the video. Since the iPhone can only display video in full screen, this means that sideloaded captions will not function on this device.