It's true that Chrome/Chromium don't support it. [0]
Linux itself certainly supports it [1], and at least Mozilla have some progress towards it happening [2][3][4], if slow progress.
However, we used to have hardware video decoding via gstreamer and VLC within Firefox as plugins, using VAAPI and NPAPI, so it's still possible to get working today.
It's true that Chrome/Chromium don't support it. [0]
Linux itself certainly supports it [1], and at least Mozilla have some progress towards it happening [2][3][4], if slow progress.
However, we used to have hardware video decoding via gstreamer and VLC within Firefox as plugins, using VAAPI and NPAPI, so it's still possible to get working today.
[0] https://bugs.chromium.org/p/chromium/issues/detail?id=463440
[1] https://wiki.archlinux.org/index.php/Hardware_video_accelera...
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=563206
[3] https://bugzilla.mozilla.org/show_bug.cgi?id=1210729
[4] https://bugzilla.mozilla.org/show_bug.cgi?id=1210726