When an photo/image is uploaded to AEM, renditions are created by-default. But for Video, renditions are not created.
The default out-of-the-box workflow that kicks-in when any new asset is uploaded is DAM Update Asset ( http://localhost:4502/cf#/etc/workflow/models/dam/update_asset.html )
One of the Step in this workflow that creates the Renditions is FFmpeg transcoding.
For the video renditions to be created, ffmpeg need to be installed on the server, with ffmpeg being available in the PATH for AEM to pick it up.
Below is an example of how the default video renditions look like for an uploaded video:
1. Download FFmpeg from here
2. Set it to PATH
3. Go back to AEM Assets and upload a video. You will see “Processing” and also you may check the “/crx-quickstartlog/error.log” you will some activity on renditions being created.
PS: On MAC, you can use :
brew install ffmpeg