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I looked at the OPV Q 28 encode this morning. I must say on casual perusal it look pretty good (of course, at 3884 I would expect it to).
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Could you run that Q28 encode through Bitrate Viewer and verify the average quantization? It should be under 5, probably more like 4.5 to 4.8. I still need to get my arms around the direct relationship of OPV's use of the "Q" term and the resulting actual AQuant.
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Say, am I in for a rude awakening? Are DVDs widely erratic in the bitrate they require?
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Don't know if it will be rude :-) Maybe more like a friendly eye opener, like a slug of 12 year old Jameson in your coffee. I seem to always just 'see' better after one of those :-)
Speaking of eye openers, here are a few more:
ItalianJob_16X9_23.976_Q28_FR_159006_Tm_1.50.25_DABR_2691.mpv
ISpy_____16X9_23.976_Q28_FR_138965_Tm_1.36.30_DABR_3610.mpv
Note the first requires much less ABR to achieve Q28 and is actually longer in length. Few more:
MatrixR_16x9_23.976_Q28_FR_185867_Tm_2.09.04_DABR_2652.mpv
XMen__16x9_23.976_Q28_FR_150067_Tm_1.44.12_DABR_1933.mpv
SmthnGottaGive_16x9_23.976_Q28_FR_184357_Tm_2.08.01_DABR_3147.mpv
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..., but your mention in the other thread that Spirited Away needs only 1873 really thru me. Guess I'll have to grab my copy of Spirited Away and see for myself ...
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That would be highly appreciated if you can find the time. You reminded me that the 1873 ABR figure was based on a script I used that was 704x480, with overscan reduction. I re-sampled using full res and it shows a DABR of 2078. You should get this same figure.
If you have the playtime, do a quick sample on the same after adding a compression filter like Undot().Deen(). I think you should show a reduction in the DABR of around 15 to 25% [maybe not on anim]. Not to worry, I know it is a religious purist issue. Just mentioning it because it illustrates the point so clearly and it only takes a couple of minutes to do.