[MPlayer-users] PSNR Questions

[Struan Bartlett]

-oac copy -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=10000:psnr:vhq:vpass=1
/mnt/JFS/O30.avi -o O30-v5005-vhq.avi

Pos:  60.0s   1500f (99%)  14fps Trem:   0min  19mb  A-V:0.040 [2217:448]

Video stream: 2217.400 kbit/s  (277174 bps)  size: 16619410 bytes  59.960
secs  1500 frames

Audio stream:  448.000 kbit/s  (56000 bps)  size: 3388000 bytes  60.500 secs
PSNR: Y:48.18, Cb:49.54, Cr:50.71, All:48.73

But:

-oac copy -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=10000:psnr:vpass=1:vhq
-vop crop=720:426:0:74 /mnt/JFS/O30i.avi -o O30-vhq-crop.avi

Pos:  60.0s   1500f (99%)  14fps Trem:   0min  18mb  A-V:0.040 [2152:448]

Video stream: 2152.284 kbit/s  (269035 bps)  size: 16131372 bytes  59.960
secs  1500 frames

Audio stream:  448.000 kbit/s  (56000 bps)  size: 3388000 bytes  60.500 secs
PSNR: Y:46.54, Cb:48.19, Cr:49.34, All:47.15