commit e5eb81d599e4a689c01e7e40ce3e445ea231723b
author Roman Arutyunyan <arut@nginx.com> Thu Oct 28 14:14:25 2021 +0300
committer Roman Arutyunyan <arut@nginx.com> Thu Oct 28 14:14:25 2021 +0300
tree 71fa1760f10835fd9855251b584c985308877a47
parent 4714ca0e97153b0bc00737dd92b106cf7987f9d7

Mp4: mp4_start_key_frame directive.

The directive enables including all frames from start time to the most recent
key frame in the result.  Those frames are removed from presentation timeline
using mp4 edit lists.

Edit lists are currently supported by popular players and browsers such as
Chrome, Safari, QuickTime and ffmpeg.  Among those not supporting them properly
is Firefox[1].

Based on a patch by Tracey Jaquith, Internet Archive.

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1735300