[Ffmpeg-devel] Threading in libavcodec

[Måns Rullgård]

Christian Iversen <chrivers at iversen-net.dk> writes:

> On Sunday 22 January 2006 23:04, M?ns Rullg?rd wrote:
>> Mathieu Monnier <manao at melix.net> writes:
>> >> That would be the case if the single-threaded encode used the same
>> >> slice structure as the multi-threaded version.
>> >
>> > With XviD, it does. When I said binary identical, I meant on the
>> > bitstream level, not on the decoded pictures.
>>
>> That's what I meant too.  I wouldn't be talking about slices
>> otherwise.
>>
>> >> How does xvid compare against single-threaded lavc?
>> >
>> > I could point you toward the doom9 comparison, but I guess it might
>> > not be welcomed here ;)
>> >
>> > Can you refine what you want to compare ? Quality, or speed ?
>>
>> PSNR at a given bitrate or bitrate at a given PSNR.
>
> Actually, how about calculating the Image Quality Index instead? It looks 
> really promising over PSNR.

Excuse my ignorance, but I must have missed something.  What is the
image quality index?

-- 
M?ns Rullg?rd
mru at inprovide.com