[Ffmpeg-devel] Comparison of gray codecs
Philippe De Muyter
Thu Sep 21 09:45:17 CEST 2006
On Thu, Sep 21, 2006 at 07:34:11AM +0300, Kostya wrote:
> On Wed, Sep 20, 2006 at 08:08:23PM +0200, Michael Niedermayer wrote:
> > Hi
> > On Wed, Sep 20, 2006 at 07:17:00PM +0300, Kostya wrote:
> > > Here is a small patch which fixes grayscale JPEG-LS decoding so now you have the
> > > codec which supports grayscale encoding and is lossless or near-lossless.
> > > For lossy compression try passing '-pred x' option where 1 <= x <= 3. It won't
> > > result in blockiness too.
> > >
> > > I hope Michael will approve this patch and it will be applied.
> > looks ok
I confirm that it fixes the decoding problem for jpeg-ls and that the default
behaviour of grayscale jpeg-ls is really lossless.
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