[MPlayer-users] hardware video decoding and yuv dump with mplayer

[pcuser p]

On Sun, Oct 7, 2012 at 1:32 PM, Reimar Döffinger
<Reimar.Doeffinger at gmx.de>wrote:

> On Sat, Oct 06, 2012 at 01:56:00PM +0000, Carl Eugen Hoyos wrote:
> > pcuser p <pcuser.mails <at> gmail.com> writes:
> >
> > > ./mplayer  -v driver=v4l2:device=/dev/video0 -vo yuv4mpeg
> > > /root/apps/testseq/video.m4v
> >
> > Are you trying to re-encode /dev/video0 ?
> > That should be possible with ffmpeg.
> > ffmpeg -f v4l2 -i /dev/video0 out.m4v
> >
> > Or do you want to play a file (video.m4v)?
> > That should work fine with
> > ./mplayer /root/apps/testseq/video.m4v
> >
> > Or do you want to playback from a video4linux device?
> > Then try mplayer tv:// (with some -tv options)
> >
> > Sorry, but above command line makes no sense and
> > I cannot tell what you trying to do.
>
> No, that is some messy hack used to integrate hardware decoders.
> You put the compressed data into a v4l output device and it
> will decompress it.
>



> MPlayer can send compressed data to it via -vo v4l2, though
> I have not idea if that actually still works.
>

   I am expecting the same,mplayer to send compressed data to v4l2 device.


> However readback even if supported is certain to be some
> kind of proprietary/custom hack, so we can't really say how.
>


Do I have add another video output driver (VO) in mplayer like vdpau,x11 ?
I thought I can use already existing v4l2 vo in mplayer.









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