You can send high-quality web lessons to us, we make them available on our website. We will evaluate every web lesson and approve or not. The quality and content must be good.

Captions / Subtitles

To function with our search engine (Search&Learn) all web lessons must be accompanied by a SRT (SubRip) subtitle text file.


Please do NOT attach the files to the email. Include a link to your files at your preferred cloud service (onedrive, dropbox, etc.)

Video specifications

Bitrate recommendations

Resolution Recommended bitrate
1080p 8 Mbps
720p 4.8 Mbps
480p 2.4 Mbps
360p 1 Mbps


If you’re producing a brand new file, we recommend you use the following settings:

  • MP4 containers, AAC audio codec, H264 video codec, 30 or below frames per second
  • moov atom should be at the front of the file (Fast Start)
  • H264 progressive scan (no interlacing)
  • H264 high profile
  • Closed GOP
  • Content should be encoded in the same frame rate it was recorded