webM alpha transparency

[Fyrd]

webM alpha transparency

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This issue was imported from Google Moderator

Moderator votes: +8
Issue added by aerin on 2015-02-04

[chrisblakley]

+1

[alexgleason]

Here's some more info about transparency within the webm format itself: https://developers.google.com/web/updates/2013/07/Alpha-transparency-in-Chrome-video?hl=en

Here's a test page, showing off embedded webm videos with transparency: https://simpl.info/videoalpha/

Finally, here's a direct link to a webm video with transparency: https://simpl.info/videoalpha/video/dancer1.webm

The link above says it works since Chrome 31. I'm on FireFox 70.0.1 where it also works perfectly.

[Fyrd]

Have added a note on https://caniuse.com/webm to the Safari browsers to indicate lack of alpha transparency support. Might also apply to other older browsers but seems it's been around for a while not not too urgent to update.