[FFmpeg-devel] [PATCH] Altivec versions of h264's weight/biweight functions

Guillaume POIRIER poirierg
Tue Jan 6 00:49:01 CET 2009


On Tue, Jan 6, 2009 at 12:29 AM, Jason Garrett-Glaser
<darkshikari at gmail.com> wrote:
> On Mon, Jan 5, 2009 at 6:25 PM, Guillaume POIRIER <poirierg at gmail.com> wrote:
>> Hello,
>> On Mon, Jan 5, 2009 at 10:20 PM, David Conrad <lessen42 at gmail.com> wrote:
>>> Hi,
>>> This also has sat on my HD for too long.
>> Thanks for sharing!
>> I applied only the biweight part since my video sample didn't use
>> those new weight, and I wanted to make damn sure everything worked as
>> expected before committing anything.
>> The remaining part of your patch that's left to be applied is in attachment.
>> Meanwhile, if someone wants to share a sample that uses "weight"
>> functions, go right ahead. :)
> NeroAVC.mp4 on samples (vcodecs/h264).

Thanks for the sample. The CRC differs after and before the patch.

I used the command:
./ffmpeg -i ~/NeroAVC.mp4 -an -f framecrc - > /tmp/log

Did I missuse FFmpeg, or is the new routine not bitexact?

Only a very small fraction of our DNA does anything; the rest is all
comments and ifdefs.

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