[FFmpeg-devel] Issues with ljpeg

Michael Niedermayer michaelni
Thu Aug 28 02:58:10 CEST 2008


On Wed, Aug 27, 2008 at 08:00:43PM -0400, compn wrote:
> On Thu, 28 Aug 2008 00:28:19 +0200, Michael Niedermayer wrote:
> >On Thu, Aug 28, 2008 at 12:19:04AM +0200, Michael Niedermayer wrote:
> >> On Wed, Aug 27, 2008 at 11:19:21PM +0200, Stefano Sabatini wrote:
> >> > On date Wednesday 2008-08-27 15:25:10 -0400, compn encoded:
> >> > > On Wed, 27 Aug 2008 16:29:27 +0200, Mathieu Malaterre wrote:
> >> > > >Hum... Looking at the output of -formats there was no mention of a
> >> > > >ljpeg decoder...
> >> > > 
> >> > > seems to be missing from the docs as well.
> >> > > again i'd like to have an automatically generated codec list.
> >> > > ala http://www.mplayerhq.hu/DOCS/codecs-status.html
> >> > 
> >> > I think that indeed there is *not* any ljpeg decoder.
> >> 
> >> 5a662e3833d900b56cca79ba5ed5ec06 *./tests/data/a-ljpeg.avi
> >> 6264498 ./tests/data/a-ljpeg.avi
> >> 799d3db687f6cdd7a837ec156efc171f *./tests/data/ljpeg.vsynth.out.yuv
> >> stddev:    0.00 PSNR:999.99 bytes:  7603200/  7603200
> >> 
> >> straight from the regression tests
> >> i assume they are failing for you at that point?
> >
> >also you can try miss_congeniality_pegasus_ljpg.avi from the samples
> >archive if above isnt convincing enogh
> 
> mplayer has had the ljpeg encoder in its docs for a long time now.
> http://www1.mplayerhq.hu/DOCS/HTML/en/menc-feat-enc-libavcodec.html
> 
> it must be something when one ffmpeg developer has to convince
> other ffmpeg developers that a decoder/encoder actually exists...

yes, everyone except me is stupid ;)

our mjpeg decoder decodes ljpeg, similarly we DO have a h263p decoder
and a MPEG audio layer 1 decoder,
we also have vob, vcd and svcd demuxers, none of them is listed, i dont
know why this is suddenly confusing people, its not new at all ...

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I wish the Xiph folks would stop pretending they've got something they
do not.  Somehow I fear this will remain a wish. -- M?ns Rullg?rd
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