Re: [rtcweb] Performance of H.264...

Maik Merten <maikmerten@googlemail.com> Wed, 20 November 2013 19:08 UTC

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Date: Wed, 20 Nov 2013 20:08:12 +0100
From: Maik Merten <maikmerten@googlemail.com>
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Subject: Re: [rtcweb] Performance of H.264...
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Am 20.11.2013 18:52, schrieb Bernard Aboba:
> Sorry to interrupt the ongoing codec rant-o-rama, but some may find the
> following pre-print paper of interest:
> http://iphome.hhi.de/marpe/download/Performance_HEVC_VP9_X264_PCS_2013_preprint.pdf

There's much to be said about PSNR as means for comparing image quality. 
There's also much to be said about PSNR as means for conducting 
cross-codec quality assessments.

And little of it is pretty.

I always chuckle when I see x264 being given the "--tune psnr" 
parameter. Even core developers of x264 have strong opinions on this: 
http://x264dev.multimedia.cx/archives/458



Maik