[x264-devel] Real-time encoding for low resolution

Jason Garrett-Glaser darkshikari at gmail.com
Sun May 18 14:55:03 CEST 2008


> Sorry, was quite imprecise here, because my settings were not optimised for
> realtime at all. Of course, when playing around a bit, I'm able to achieve
> realtime (e.g. --subme 3).
> But you said "relatively intensive encoding settings", so I'd like to know
> what you mean with that. Just interested in other peoples settings in general.
>
> My non realtime-optimised settings are:
> -B 3000 --interlaced -b 3 -r 5 -A all --me umh -m 6 --b-rdo -8
> --deadzone-inter 6 --deadzone-intra 4 --cqm jvt
> --no-psnr --no-ssim --threads 0

Here's an example that goes 26 FPS (just above realtime) for 720x576
PAL on my C2D T7200 using a 32-bit fprofiled r851 build:

x264 --bframes 3 --b-pyramid --crf 25 --bime --weightb --subme 6 --ref
4 --me umh --8x8dct --no-psnr --no-ssim --threads auto --progress

The primary problems with your settings are --analyze all, which is
basically useless in most cases (p4x4 is generally pointless) and
--b-rdo.

Dark Shikari


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