[x264-devel] Theora Ahead of H.264 In Objective PSNR Quality

[Jason Garrett-Glaser]

On Thu, May 7, 2009 at 7:25 PM, Jason Garrett-Glaser
<darkshikari at gmail.com> wrote:
> On Thu, May 7, 2009 at 6:30 PM, Jason Martens <cacepi at gmail.com> wrote:
>> From Slashdot:
>>
>> http://tech.slashdot.org/article.pl?sid=09/05/07/2352203
>>
>> Let the debunking begin!
>
> Apparently they seem to have used catastrophically bad settings for
> encoding.  I'm going to guess they just encoded idiotically with
> ffmpeg without using any presets, thus using ffmpeg's quite broken
> defaults.  I suspect this is entirely intentional.
>
> It isn't worth spending time "debunking" though; anyone dumb enough to
> actually believe such a thing deserves the godawful quality Theora
> will give them.  And when they get that godawful quality, if they are
> still dumb enough to not realize they've been scammed by Xiph, they
> deserve every last bit of suffering they will experience.
>
> Dark Shikari
>

And it turns out the problem was a bug in ffmpeg when writing the y4m
file prior to PSNR measurement, cutting a nice 4db off of x264's
score.

I cannot stop laughing at this.

Dark Shikari