Supported File Formats for Upload to Knowmia

Supported Formats

The Knowmia (formerly TechSmith Relay) Classic Recorder and Web Upload option will upload:

File formats (file extension) Supported Video Codecs Supported Audio Codecs
MP4 (.mp4) AVC (H.264) AAC (AAC-LC, HE-AAC)
Windows Media Video (.wmv) WMV3 WMA3
QuickTime (.mov) AVC (H.264) AAC (AAC-LC, HE-AAC)



  • Knowmia cannot process QuickTime (.mov) files that contain video encoded with the TSC2 codec. These types of files were created by the Knowmia Mac Desktop Recorder prior to version 5.1.2 (January 2017).
  • The Web Upload option is recommended to upload individual files no greater then 4GB. Please use the Knowmia Classic Recorder to upload files that exceed this limit.

For image files:

  • Please upload PNG, JPG, or GIF files only, with a minimum height and width of 200 pixels.


Workaround for Uploading Unsupported Video File Formats

If you have media that does not meet the requirement specified or that is experiencing issues uploading, please try re-encoding the media using the steps in the following article here .