[Bug 753032] x264enc: AVFoundation can not play videos muxed with mpegts if h.264 profile is high-4:4:4

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=753032

--- Comment #5 from Kyrylo V. Polezhaiev <polezhaiev at ukr.net> ---
> You have filed this bug against mpegtsmux, not x264enc. Why is that? Does it work if you use mp4mux instead of mpegtsmux?

You are right, I have same result with mp4mux. It is playable by VLC or
gst-play but unplayable via AVFoundation.

> 2) Y444 in, with output requested to be main/high profile -> error
> 3) Y444 in + videoconvert, with output requested to be main/high profile -> converts to I420 and outputs main/high profile

Yes, and that means that video/x-h264,profile=high capsfilter after x264enc
prevents x264enc from connecting to it's predecessor with Y444 format during
negotiation. Thats workaround I use to make my streams be visible in Safari.

I think, maybe there is some additional requirements are filed by Apple (like
AU delimiters we faced few weeks ago).

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