Re: Re: A new vf layer proposal...

On Tue, Sep 16, 2003 at 12:48:05AM +0200, Felix Buenemann wrote:
> On Monday 15 September 2003 22:32, Gustavo Sverzut Barbieri wrote:
> [...some ugly wrapped text...]
> > >
> > > Or think about mplayer-g2-PVR, with simultaneous display and encoding
> > > of video. Maybe you have something like:
> > >
> > >                  ,-> vf_madei -> vo
> > >                 /
> > > tvin -> vd_raw <
> > >                 \
> > >                  `-> ve
> > >
> > > ...or...
> > >
> > >                               ,-> vo
> > >                              /
> > > tvin -> vd_raw -> vf_pullup <
> > >                              \
> > >                               `-> vf_scale -> ve
> >
> > But here maybe we need something different, since would be cool if the
> > VO could go back and forth, while VE keeps recording... (Tivo like)
> 
> It would probably be easier, if you record to file with one process and 
> playback the currently recording file using another process =)

It would also require more cpu power! Decoding 640x480 (or higher!)
video takes a lot more than just copying it to video memory. IMO it
would be worthwhile to have both approaches. Really what I described
isn't like a PVR so much as just a simple video recorder that lets you
watch while you record...for a full PVR you'd want to play from the
file so you could seek during recording.

> > Anyway, this can be great to do Video Walls, so video is cropped and
> > exported to different video heads, ie:
> >
> >                  .---> Top_Left
> >
> >                  +---> Top_Right
> >
> > vf_videowall(4) -+
> >
> >                  +---> Bottom_Left
> >
> >                  `---> Bottom_Right
> >
> > Maybe something to crop each video display border out (Ie, using
> > monitors, crop around 2")
> hmm, do you remember this project where they animated a whole building using 
> lights which represented grey-sahed pixels? ah, Blinkenlights Arcade, anyways 
> there was an MPlayer plugin for it. -> http://www.blinkenlights.de/

Yep. :)

Rich