[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec snow.c, 1.68, 1.69 avcodec.h, 1.436, 1.437

Jeff Clagg snacky
Wed Dec 28 23:04:27 CET 2005

ok, new test, I omitted qpel and v4mv just because vme=8 plays very
poorly with one or both of them (MUCH worse quality than vme=4). In
short, in the following test at vqscale=8, vme=8 gains 0.11dB PSNR,
cuts bitrate by 8.7%, and takes almost 12 times longer to encode.

vme=4 (default)
time src/mplayer/mencoder -frames 400 timing.avi -nosound -ovc lavc -lavcopts \
vstrict=-2:vcodec=snow:psnr:pred=0:vqscale=8:cmp=12:subcmp=12:mbcmp=1:psnr -o \

Video stream:  158.314 kbit/s  (19789 B/s)  size: 316627 bytes  16.000
secs  401 frames
PSNR: Y:33.45, Cb:34.69, Cr:36.19, All:34.00

real    1m5.014s
user    1m4.371s
sys     0m0.126s

vme=8 (new)
time src/mplayer/mencoder -frames 400 timing.avi -nosound -ovc lavc
-o vme8snowtest2.avi
Video stream:  145.678 kbit/s  (18209 B/s)  size: 291355 bytes  16.000
secs  401 frames
PSNR: Y:33.80, Cb:34.29, Cr:35.45, All:34.11

real    13m29.096s
user    12m37.672s
sys     0m1.185s

source file: http://ikaruga.co.uk/~snacky/timing.avi

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