HTML5 video

Installing Chrome gets you a better Flash player if you’re using Flash and unlocks a larger amount of media content online. For example, Google Chrome on Linux can now stream Netflix videos.
This requires H.264 support for HTML5 video, something Chromium doesn’t include.

With smooth scrolling turned off and scroll set to 3 lines in the mouse driver’s properties, everything works great for me.



settings > webpages > smooth scrolling

update : ondertussen achterhaald

test html5 video :
https://help.vivaldi.com/desktop/media/html5-proprietary-media-on-linux/
indien dit ok afspeelt, dan heb je geen probleem en is geen actie nodig
==> [ OK ]

zie ook :
https://en.wikipedia.org/wiki/Encrypted_Media_Extensions

op oudere versies :

https://forum.vivaldi.net/topic/17109/twitter-the-media-could-not-be-played-etc/4

• Open    ~~vivaldi://chrome/settings/search#hardw~~
• Disable Hardware acceleration
• Restart Vivaldi

YouTube HTML5 Video Player
Many YouTube videos will play using HTML5 in supported browsers. You can
request that the HTML5 player be used if your browser doesn’t use it by
default.
What does this browser(=vivaldi)  support?
HTMLVideoElement
WebM VP8
Media Source Extensions
MSE & WebM VP9
Not supported
H.264
MSE & H.264
The HTML5 player is currently used when possible.
 H.264 playback depends on hardware and operating system support.

https://gist.github.com/ruario/bec42d156d30affef655
How to enable HTML5 MP4 (H.264/AAC) video in Vivaldi for Linux, via an
alternative FFMpeg library Intro
The following is a quick guide to get this working on various Linux
distros. As a side note, if you have Chrome installed alongside Vivaldi,
Netflix should also work after making these changes. Alternatively, use
my latest-widevine.sh to
fetch and extract Chrome’s copy of Widevine, so that it can be used by Vivaldi.

   sudo apt update
   sudo apt install chromium-codecs-ffmpeg-extra  

zie ffmpeg