[FFmpeg-devel] [PATCH] FFV1 improvments
Mon Oct 11 11:59:16 CEST 2010
On Sun, 10 Oct 2010, Jason Garrett-Glaser wrote:
> On Sun, Oct 10, 2010 at 2:05 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
>> On Sun, Oct 10, 2010 at 01:19:57PM -0700, Jason Garrett-Glaser wrote:
>>> On Sun, Oct 10, 2010 at 12:25 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
>>>> Will apply patch-set below soon.
>>>> bikesheds will be politely ignored
>>> Looks good;
>>> what are the plans for version 2?
>> the immedeate plan for ffv1.2 is to add rectangular slice based multithreading
>> this should make the code much faster without extra delay
> Another thing you might want to try (since you're changing things...)
> is Loren's median5 predictor; testing in FFV2 showed that it beat the
> standard median predictor by a few % in terms of order-0 entropy. I
> don't have it, but I assume he can post it here.
median5(l, tr, l+t-tl, l*2-ll, t*2-tt)
also, median3(l, tr, l+t-tl) is better than median3(l, t, l+t-tl)
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