After Effects : Render Output Settings for MP4 (H.264)
У вашего броузера проблема в совместимости с HTML5
Export from AE to MP4 format?
For better quality Open the AE project in Adobe Media Encoder, select the comp you want to render and use the presets to export. AE is not really meant to compress files, it is best to render uncompressed from there and then use a compression software to encode for final delivery or use the method described above.
- Tudor "Ted" Jelescu
Senior VFX Artist
Comfortable Mystery 3 - Film Noire by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100536
Artist: http://incompetech.com/