Supported video formats

Before uploading a video to the site, please make sure it is an MP4, using H264/AVC encoding.

Following an upload double check that it plays in the browser. If it does not, then you should delete it yourself. You can try re-encoding (transcoding) it using ffmpeg or Handbrake - other tools are available, but these are both cross platform and free.

The CLI for ffmpeg:

ffmpeg -i input.mp4 -vcodec libx264 -acodec aac output.mp4

Other codecs such VP-9 and H265 are not supported. Other video containers such as MKV are not supported either.

Anything that fails this will be deleted by staff.

These requirements are in place as to ensure the videos are viewable by all users of the site.

BTW since the iPhone is more limited in the codecs it supports, I have opted to create an "iphone incompatible" tag. This way is easier to identify videos that need to be transcoded to something that is more universally supported.

Note, that the transcoding and re-upload is a task that can be done by anyone in the community. Mods will help out too if they have time, but don't make it an expectation. Just let us know in a merge report that you are uploading for compatibility.