On Tue, Oct 22, 2024 at 04:22:06PM +0200, Lynne via ffmpeg-devel wrote:
> On 16/10/2024 15:26, Michael Niedermayer wrote:
> > This makes a 16bit RGB raw sample 25% faster at a 2% loss of compression
> > with rawlsb=4
> >
> > Please test and comment
> >
> > This stores the LSB through non binary
On 16/10/2024 15:26, Michael Niedermayer wrote:
This makes a 16bit RGB raw sample 25% faster at a 2% loss of compression with
rawlsb=4
Please test and comment
This stores the LSB through non binary range coding, this is simpler than using
a
separate coder
For cases where range coding is not w
On Mon, Oct 21, 2024 at 04:40:41PM +0200, Jerome Martinez wrote:
> Le 16/10/2024 à 22:53, Michael Niedermayer a écrit :
> > what are you testing?
> > the new code is faster than the old code.
> > There is something not right here, the range coder based implementation
> > i posted now is 5% faster t
Le 16/10/2024 à 22:53, Michael Niedermayer a écrit :
what are you testing?
the new code is faster than the old code.
There is something not right here, the range coder based implementation
i posted now is 5% faster then the range coder based one i posted earlier today
thats overall speed meassure
On Wed, Oct 16, 2024 at 10:53:37PM +0200, Michael Niedermayer wrote:
> Hi Jerome
>
> On Wed, Oct 16, 2024 at 10:29:18PM +0200, Jerome Martinez wrote:
> > Le 16/10/2024 à 21:51, Michael Niedermayer a écrit :
> > > did you try qtable 1 ? strangely it performed better for the file i used
> > > compr
Hi Jerome
On Wed, Oct 16, 2024 at 10:29:18PM +0200, Jerome Martinez wrote:
> Le 16/10/2024 à 21:51, Michael Niedermayer a écrit :
> > did you try qtable 1 ? strangely it performed better for the file i used
> > compression wise
>
> Updated with latest code (in practice, no change in previous val
Le 16/10/2024 à 21:51, Michael Niedermayer a écrit :
did you try qtable 1 ? strangely it performed better for the file i used
compression wise
Updated with latest code (in practice, no change in previous values):
0,037x 0,471 No patch
0,051x 0,491 bitfield
0,046x 0,489 rangec
Hi Jerome
On Wed, Oct 16, 2024 at 06:27:09PM +0200, Jerome Martinez wrote:
> Le 16/10/2024 à 15:54, Michael Niedermayer a écrit :
> > 3rd implemantation :)
> > you might ask why i implement this 4?! times
> > Heres why: (tests done with 4 rawlsb bits, 16bit per sample input)
>
> I tested on my si
Le 16/10/2024 à 15:54, Michael Niedermayer a écrit :
3rd implemantation :)
you might ask why i implement this 4?! times
Heres why: (tests done with 4 rawlsb bits, 16bit per sample input)
I tested on my side also including the speed as the goal is to avoid the
speed cost of the LSB, with 6K con
On Wed, Oct 16, 2024 at 03:26:39PM +0200, Michael Niedermayer wrote:
> This makes a 16bit RGB raw sample 25% faster at a 2% loss of compression with
> rawlsb=4
>
> Please test and comment
>
> This stores the LSB through non binary range coding, this is simpler than
> using a
> separate coder
>
This makes a 16bit RGB raw sample 25% faster at a 2% loss of compression with
rawlsb=4
Please test and comment
This stores the LSB through non binary range coding, this is simpler than using
a
separate coder
For cases where range coding is not wanted its probably best to use golomb rice
for eve
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