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Master:
Filtered through avisynth 2.51 beta (yv12 colorspace)
Code: Select all
MPEG2Source("G:\LOVE_HINA_VOL_\VIDEO_TS\project.d2v",cpu=6,iDct=4,iPP=true)
Telecide(guide=1,post=true,blend=true,chroma=true)
Decimate(mode=2,quality=3)
Crop(10,0,-6,-0)
Deen("a3d",1,10,12)
LanczosResize(640,480)640x480 23.976fps
2166 frames
1:30:340
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Only required encode settings:
1024kbps (vbr or cbr) with a 500KB output tolerance. 2048kbps (same) with same. 640x480 resolution. 23.976fps framerate.
Codecs:
-----Mpeg1
-------------TMPGenc
-------------ffmpeg
-------------whatever the fuck hatter uses
-----Mpeg4
-------------XviD 4/5/03
-------------DivX 5.04 Schizo Beta 4
-------------3ivX D4 4.04
-------------ffmpeg
-------------msmpeg4v2 (for kicks)
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Evaluation:
No post processing; barebones vfw decoding using virtualdub. Frames will be grabbed and posted. Thorough visual comparison will be typed up. Mean absolute difference, mean difference, and peak-signal-to-noise-ratio will be provided for each file (statistics compare encoded output to master) and for both all channels (YUV) and specifically the chroma channels (UV).
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Personal expectations -
1024kbps is actually a rather high bitrate in the encoding business, and at high bitrates every codec becomes less distinguishable from one another. However, at this bitrate basically any of the Mpeg 4 codecs should easily take the cake agains the mpeg 1 codecs. At 2048 the difference should be a bit smaller, but still relatively clear.
While certain flavors of Mpeg 1 and Mpeg 4 may only be a few tweaks away from each other technically, the Mpeg 4 standard is also much broader and inclusive and tends to surpass the 14 year old mpeg 1 especially at lower bitrates. Here we'll do a little research into how far it surpasses mpeg 1 at relatively higher bitrates per request of a certain forum member >;]
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Hatter: vble_.avi is in your upload dir. "vble.avi" got cut off mid-transfer and is only like half the file. "vble_.avi" is the real thing. PM me where I can get your final two mpeg 1 encodes of the video. After I've got that and all other codec samples, comparisons will be drawn up and posted.