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Old 30th August 2009, 17:18   #214  |  Link
shon3i
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Join Date: Dec 2005
Posts: 2,419
Hello jdobbs, as i alredy ask you here about Level 4.0 comilance in BD Rebulder, i want to elaborate this. Since x264 can't fully produce Blu-Ray compilant stream at level 4.1, according original Blu-Ray specification, encoding only and only with level 4.1 require 4 or more slices. Level 4.0 is full blu-ray compilant only thing is different is that max bitrate drop from 40000 to 24000. Since both level 4 and 4.1 can have max buffer on 30000, which mean max 30mbps peak, quality won't drop by wide margin. You current buffer setting (25000) can hurt quality more than difference between level 4 and 4.1. Anyway x264 as very powerfull and quality at level 4 will be same. Finaly we find settings that are 100% compilant, i think is smarter for near future until x264 not make slices encoding.

I suggest you to add some hidden option and use 100% blu-ray compilant settings in this mode such as
Level 4
vbvmaxrate 24000
vbvbuffersize 30000
bframes=3
refs=4
no bpyramid
no mixedrefs
aud, nalhrd

strems generated with 100% compilant settings will be more usefull for authoring programs such sonic scenarist and others. Buffer 30000 are good for DVD media aslo there is no reason to change it because is compilant to BD 5/9 unless use strict AVCHD specs.

Thanks.

Last edited by shon3i; 30th August 2009 at 17:23.
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