[Ffmpeg-devel] [PATCH] fast h264 decoding
Wed Jul 13 21:22:01 CEST 2005
On Wednesday 13 July 2005 20:21, Zoltan Hidvegi wrote:
> Reimar D?ffinger wrote:
> [ Charset ISO-8859-1 unsupported, converting... ]
> > Hi,
> > On Wed, Jul 13, 2005 at 12:25:06PM -0500, Zoltan Hidvegi wrote:
> > > Reimar D?ffinger wrote:
> > > > It disables the deblocking step when fast is set, for the samples I
> > > > have it doesn't make a visual difference, but decoding time goes down
> > > > from
> > >
> > > I thought that in h264 the deblocked image is used for motion
> > > prediction of future frames,
> > > which means that this would significantly
> > > degrade quality.
maybe, maybe not
> > > But I'm really not a h264 expert, so maybe I'm wrong.
> > Yes, probably. But for the case of high bitrate HDTV that doesn't really
> > matter *g*, whereas nearly twice the speed certainly does.
> > I think it would be really a good idea to have such an option, though I
> > am not sure if it should "re-use" the fast option or not (and e.g. create
> > a new one instead).
yes, create a new one
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