HTML5 “proprietary” audio and video includes all media types that are patented, such as MP4 (H.264/AAC). Under Linux, Vivaldi requires a suitable, third-party support file to play these.

Start a “Terminal” and copy and paste in one of the following (followed by Enter). Once the command is complete, restart Vivaldi.

Ubuntu (16.04 and above) or derivatives

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

Other Linux (Including Ubuntu 14.04)

64-bit

curl -L vvld.in/lm64|tail -c+1079|tar xJ -C ~ --wildcards \*libffmpeg\.so --xform 's,.*/,.local/lib/vivaldi/,'

32-bit

curl -L vvld.in/lm32|tail -c+1077|tar xJ -C ~ --wildcards \*libffmpeg\.so --xform 's,.*/,.local/lib/vivaldi/,'

32-bit (Arm)

curl -L vvld.in/lm32a|tail -c+1079|tar xJ -C ~ --wildcards \*libffmpeg\.so --xform 's,.*/,.local/lib/vivaldi/,'

64-bit (Arm)

curl -L vvld.in/lm64a|tail -c+1077|tar xJ -C ~ --wildcards \*libffmpeg\.so --xform 's,.*/,.local/lib/vivaldi/,'

Testing

You can then test video support on this page and audio support on this page.

A more complete guide, that covers any issues you might encounter, can be found here.

Websites using Encrypted Media Extensions

To use DRM protected media services like Netflix, HBO and Amazon Prime, you will also need to ensure that the Widevine library is installed.

ARM users should refer to this guide