[MPlayer-users] Possible to stream/pipe -vo pgmyuv?
Steven M. Schultz
sms at 2BSD.COM
Wed Jan 19 17:14:58 CET 2005
On Wed, 19 Jan 2005, Ivo wrote:
> On Wednesday 19 January 2005 10:30, RC wrote:
> > > Is there a way that I have overlooked to have the output of
> > > '-vo pnm:pgmyuv' (or for that matter -vo pnm:<any>) written as a
> > > stream rather than individual files?
> Although I could add a suboption for that (say, 'stream'), why not use
> yuv4mpeg for streaming to a fifo? You might want to look at mplmult.sh in
> the TOOLS directory for an example of its usage.
The thought was to avoid unnecessary chroma conversions. The
source data is 4:1:1 (DV) and that's what the final result will
be - so going thru yuv4mpeg would mean a 4:1:1 -> 4:2:0 -> 4:1:1
roundtrip at least.
A stream option in -vo pnm would end up doing, I believe, a
4:1:1 -> RGB -> 4:1:1 which would be less damaging to the data.
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