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Old 19th July 2015, 18:58   #438  |  Link
De_Hollander
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Join Date: Jul 2007
Posts: 56
sorry but my test gives me better results with 2 passes blu-ray compatible with giving manual bitrate of 14mbitps.
I have encoding blu-ray for many years.
Look for the bitrate from the original blu-ray with bdinfo, never give higher bitrate than the blu-ray.
So the blu-ray haves 28 mbps , i' give manualy average 14 mbps, with blu-ray compatibel that's alway's a good bitrate for a 1080p x264
Output :
File size : 4.63 GiB
Duration : 41mn 35s
Bit rate mode : Variable
Bit rate : 14.0 Mbps

You always get a good ratio proportion bitrate and file size.
I have tested many times with CRF with 21 but gives a to small file, and have see microblocking.
So you have see a result Bit rate : 6 357 Kbps (not good) tested with 42 minutes movie blu-ray 12 gig.
encode output was


File size : 2.46 GiB
Duration : 41mn 35s
Bit rate : 6 357 Kbps


r0lZ say's "blu-ray compatible, it's have limit's." No the bitrate beneath 40 is alway's good for a 1080p x264 encode.
higher bitrate than blu-ray is not normal, and gives problems with mediaplayers en streaming.
x264 1080p encode bitrate must be lower, then blu-ray. It's not normal x264 1080p blu-ray encode with higher bitrate then blu-ray, with a smaller file size.


This test
ENCODER_SETTINGS : --crf 18 --preset slower --tune grain --level 4.1

Duration : 41mn 35s
Bit rate : 17.7 Mbps
Width : 1 920 pixels

This encode is bigger in file, but haves not a sharp image like the
2 passes blu-ray compatible with giving manual bitrate of 14 MBps encode.
File size : 4.63 GiB
Duration : 41mn 35s
Bit rate mode : Variable
Bit rate : 14.0 Mbps

Last edited by De_Hollander; 20th July 2015 at 12:17.
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