[vlc-devel] Video processing APIs
danklima at gmail.com
Tue May 19 14:16:22 CEST 2009
2009/5/19 Kaarlo Räihä <agent_007 at luukku.com>:
> Andre-John Mas kirjoitti 19.05.2009 kello 02:12:
>> On 18-May-2009, at 18:03, Jean-Baptiste Kempf wrote:
>> > On Mon, May 18, 2009 at 11:27:02PM +0300, Rémi Denis-Courmont wrote :
>> >> Slightly up the stack, it is just as messy with those challengers:
>> >> - VA-API (Intel)
>> >> - VDPAU (NVidia)
>> >> - Xvideo BA (AMD/ATI)
>> >> - DirectX VA (Microsoft)
>> >> - OpenMAX integration layer
>> >> - I wonder what Apple is doing?
>> >> And of course, we still have Xvideo Motion Compensation on older
>> >> hardware.
>> > Windows states of affair seems easy: DxVA and almost everyone
>> > implements
>> > it.
> Problem with DxVA is the limitations that make some videos undecodable.
> This isn't yet huge issue, but there already hundreds of x264 encoded videos that won't work with DxVA because they use wrong profiles/levels.
Regarding DxVA:So long as limitation is known,it is possible to check
for it at the beginning and send it to DxVA only if it is using
Yes,it is limiting,but I think it should be availabale where possible.
But any of GPU acceleration technologies is going to require extra
variable and complete reordering and/or modification of proccesing
If so first implementation would be simple with no filtres sending
video stream directly to API,until better solution enabling filters
and modificators is made.
Are thoughts corret?
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