[FFmpeg-devel] [PATCH] FFV1 improvments

[Loren Merritt]

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:
>>>> Hi
>>>>
>>>> Will apply patch-set below soon.
>>>> bikesheds will be politely ignored
>>>
>>> Looks good;
>>
>> commited
>>
>>
>>> 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)

--Loren Merritt