vivaldi-codecs-ffmpeg-extra (Extra ffmpeg codecs for Vivaldi browser).

Extra ffmpeg codecs for Vivaldi browser.

This will add H.264 support to Vivaldi and not replacing the default
/opt/vivaldi/lib/libffmpeg.so.

For tests, go to:

 * https://html5test.com
 * https://www.youtube.com/html5
 * https://tekeye.uk/html/html5-video-test-page (use the first video)