Re: [gentoo-user] Re: libvdpau (?)

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Fri, Mar 26, 2010 at 8:46 PM, 7v5w7go9ub0o <7v5w7go9ub0o@gmail.com> wrote:
> On 03/26/10 17:08, Paul Hartman wrote:
>>
>> On Fri, Mar 26, 2010 at 10:18 AM,
>> 7v5w7go9ub0o<7v5w7go9ub0o@gmail.com>  wrote:
>>>
>>> I'd like to compile ffmpeg with vdpau - direct NVidia hardware
>>> acceleration. This is a configuration flag for ffmpeg.
>>>
>>> Setting the "vdpau" use flag seems to set the configuration flag,
>>> but also brings in the "x11-libs/libvdpau" libraries which I think
>>> I do not want, as my NVidia proprietary driver provides these
>>> libraries.
>>
>> AFAIK Nvidia split the vdpau off into libvdpau late last year
>> sometime. On my system I use both nvidia-drivers and libvdpau without
>> issue. libvdpau provides libvdpau.so while nvidia-drivers provides
>> libvdpau_nvidia.so
>>
>> Here are my versions:
>>
>> x11-libs/libvdpau-0.3-r2 x11-drivers/nvidia-drivers-195.36.15
>>
>> Are you using older versions? I use ~amd64 so maybe if you run stable
>> it has the older versions.
>>
>
>
> AHA! THANKS! that explains a lot - including why they made libvdpau
> ebuild a requirement for ffmpeg.
>
> I didn't know that libvdpau ebuild is simply an open-source version of
> libvdpau.so. (The webpage describes a "wrapper" - duh, what's a wrapper?
> But I suppose that if libvdpau.so is the first in line, and subsequently
> loads other "driver" components, then it could be called a wrapper).
>
> Portage fell behind the NVidia driver releases a while back - probably
> before the split you described -  so I then started installing drivers
> directly from NVidia.com, and not portage.
>
> (And NVidia continues to bundle libvdpau.so (proprietary?) along with the
> other components.)
>
> So when ffmpeg wanted to add a "wrapper" to the mix, I decided no thanks
> and started this thread -  finally figuring out that I needed to remove
> the requirement from the ebuild. Having libvdpau.so, everything worked fine.
>
> Now that I know what it is, I've installed the libvdpau package and
> updated the portage NV drivers to current. If portage keeps current I'll
> use it; if portage again falls behind I should be able to use NVidia.com and
> ffmpeg will compile either way.
>
> Thanks again for your help.

No problem. Also check out x11-misc/vdpauinfo it is a tool that shows
the vdpau capabilities of your video card/drivers (which codecs &
mixer features are supported).