[Bug 108036] VA-API implementation reports support for unsupported endpoints

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108036

--- Comment #3 from Kurt Kartaltepe <notkurufu at cock.li> ---

> The hardware supports some high profile features (like CABAC), but
> unfortunately not all of them (like B-frames or MBAFF).
> 
> Now the profile selects what the decoder needs to be able to do to handle a
> certain video, but doesn't tells you anything about the encoder except for
> selecting the encoding of the headers.
> 
> We should support the encoding of the headers, so if an application selects
> high profile it actually gets better compression because of CABAC support.
> 
> But if the application also tries to use B-frames it will get an invalid
> stream.

Yes, the issue is that valid settings produce a stream that is invalid.
Personally I would be more than ok if the resultant stream on high was within
constrained baseline specs as long as it returned a valid stream.

 Because hardware encoders are such black boxes I care very little for the
settings i cannot control (such as exact compression techniques) and expect the
ones i can to work.

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