New comment by dm17 on void-packages repository

https://github.com/void-linux/void-packages/pull/23511#issuecomment-699648643

Comment:
@pbui Yep (installed everything from the docs), and I'm not using anything Intel (just AMD). Also 'gst-inspect-1.0 vaapi' yields nothing. I also have to export LIBVA_DRIVER_NAME=radeonsi in order to get ffmpeg's vaapi features working. If I look at chrome://media-internals, I see youtube videos show "Failed to initialize MojoVideoDecoder" and default to "VpxVideoDecoder"

vaapi seems to work in Firefox (just based on how much faster HD videos switch to full screen - will look into checking how FF does vaapi).

EDIT: This thread has more details on verification that I've tried:
https://bbs.archlinux.org/viewtopic.php?id=244031