Bug#735332: mpv: Doesn't use vaapi by default

[Alessandro Ghedini]

On mar, gen 14, 2014 at 10:09:02 +0100, Kurt Roeckx wrote:
> Package: mpv
> Version: 0.3.2-1
> 
> Hi,
> 
> It seems mpv tries to use vpdau and tries to load
> libvdpau_nvidia.so by default and fails.
> 
> It then tries to use gl instead, which works perfectly.
> 
> But I have an intel GPU, and I would make sense to use vaapi
> instead.  Using -vo vaapi at least seems to work for me.
> 
> Would it make sense to try to use vaapi by default?

Well, generally speaking VA API is kinda bad for video output (e.g. the OSD is
generally low quality, and in some cases the OSD and subtitles can't even be
drawn at the same time). I've never really used the VA API backend though, but
this seems to be upstream's opinion as well.

As for video decoding, you can enable vaapi-powered hardware decoding with the
opengl backend too (manually using the hwdec=vaapi option, since IIRC it's not
auto detected).

The only useful thing about VA API video output is probably lower power
consumption on laptops, but I don't think that's a good enough reason to enable
it by default instead of, say, the opengl backend.

You can however set it as default in your configuration file so that you don't
have to always pass --vo=vaapi, if that's what you want. Or, idk, you can also
use libvdpau-va-gl, but setting the configuration option is probably a better
idea.

Cheers

-- 
perl -E '$_=q;$/= @{[@_]};and s;\S+;<inidehG ordnasselA>;eg;say~~reverse'
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