[Ffmpeg-devel] [PATCH] increase max numbers of B frames

Erik Slagter erik
Thu Feb 23 20:07:01 CET 2006


On Wed, 2006-02-22 at 11:44 -0800, Loren Merritt wrote:
> You mean, besides not telling it to print psnr?
> "nr" will greatly degrade psnr, whether or not it improves real quality, 
> since psnr compares encoded output vs the non-denoised input. So if your 
> video is noisy, instead run it though hqdn3d or something before 
> compressing.

The difference in PSNR between encoding with 0 b frames and 16 b frames
at 2000 kbps turns out to be 0.280 (dB, right?). It gains slowly but
steadily with each b frame added. I did turn off codec denoising.

This looks to me not quite a significant difference!?

If it helps I will post the complete output.
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