[MPlayer-dev-eng] libmpcodecs - how to code video-filter which double (or quad) output frame rate

Dominik 'Rathann' Mierzejewski dominik at rangers.eu.org
Wed Jan 12 23:12:35 CET 2005

On Wednesday, 12 January 2005 at 16:41, Andreas Schulz wrote:
> Hi folks,
> I want to give me a try to code a video-filter which controls
> LCD-shutter-glasses under linux for stereo-viewing of field-interleaced 
> video.
> "incoming mpi" = odd lines -> [left] eye, even lines -> [right] eye
> So I had to do:
> "incoming mpi" -> odd lines -> first "outgoing mpi"
> "same incoming mpi" -> even lines -> second "outgoing mpi"
> (control of electronics for shutter-glasses is not the question)
> i.e. after filtering I'll have 2x the number of incoming frames.
> Question:
> How is a filter to be build, which outputs double the frame rate / frame 
> numbers as it gets on input?

AFAIK with current design it can't work reliably. One of the
(experimental) deinterlacers does that and usually segfaults mencoder.


MPlayer RPMs maintainer: http://greysector.rangers.eu.org/mplayer/
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 We stand between the darkness ... and the light."
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