Review Mozilla 1842838: [meta] HEVC (H265) playback related bugs. See the support status on the User Story.

🔍 Bugzilla Audit

Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1842838

Description

HEVC support was enabled on all platforms:

• https://bugzilla.mozilla.org/show_bug.cgi?id=1849392
• https://bugzilla.mozilla.org/show_bug.cgi?id=1853448
• https://bugzilla.mozilla.org/show_bug.cgi?id=1894818
• https://bugzilla.mozilla.org/show_bug.cgi?id=1924066

At least on linux, it requires ffmpeg to be enabled, which is by no means guaranteed to be installed. I think usually due to licensing issues in the distribution's country/state.

This kind of falls under the existing issue that #26629 is trying to address, and I added a note in #26629 (comment 3055479).

But I'm opening this separate issue to review HEVC specifically.

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