[x264-devel] Re: lossless mode tests (was:x264: svn commit r264 (pengvado))

[Guillaume POIRIER]

Hi,

On 6/17/05, Tuukka Toivonen <tuukkat at ee.oulu.fi> wrote:
> On Fri, 17 Jun 2005, Subversion daemon wrote:
> 
> > lossless mode enabled at qp=0
> 
> Great! And it works, PSNR=inf for all test videos
> I tested (real PSNR, not just the average PSNR).
> 
> Here are compression ratios for some videos:
> Sequence \ --subme ->           5       5       6(RDO) gzip     bzip2
>            \ --ref ->           1       5       5
> 
> bridge_close                    54      56      57       7      48
> coastguard                      57      57      56      31      44
> flower                          58      60      59      31      39
> foreman                         63      64      64      34      49
> highway                         56      57      57      43      56
> mobile_and_calendar             50      53      52      16      25
> munchener_hall                  41      41      40      26      39
> news                            80      80      80      37      59
> paris                           70      70      69      25      39
> stefan                          52      53      52      29      41
> tempete                         54      56      55      25      36
> tourists_in_san_fransisco       60      60      60      45      56
> waterfall                       63      63      63      20      33
> 
> 0 = no compression
> 100 = compressed to zero size
> (larger = better)

Mmmm... That's rather impressive! Do you happen to know how does
huffyuv and ffvhuff compare with x264 lossless mode?

Regards,

Guillaume
-- 
I should have invented the tape recorder,
that way people would have more quotes of
me to put at the bottom of their e-mails
-- Benjamin Franklin

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