Video Specifications

Automatic Transcoding

Previz automatically transcodes your media for optimal performance in the viewer.

We can also accept a range of common video formats.

Video Formats

  • MP4
  • WebM
  • MXF
  • MPEG-2 TS container
  • MPG
  • fmp4
  • FLV

Supported Video Codecs

  • H.264
  • VP9
  • VP8
  • MPEG-2

Not Supported

  • HAP
  • HAP-Q
  • DXV

Audio Codecs

  • AAC
  • MP3

Recommended Video Specifications

  • no larger than 8192 x 8192px
  • h264 in a mp4 or quicktime container for the video
  • aac or mp3 for audio


Transparency in videos is not supported.

We are limited by the technologies implemented by the web browser vendors. WebM (the open video format pushed by the Mozilla Foundation in Firefox and Google in Chrome) allows video with transparency, but it is not supported by Safari nor IE / Edge. There is no good cross browser technology available to us at the moment.

If you upload a video with a transparency layer, the transparent pixels will be rendered solid black in Previz.