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Old 6th June 2017, 19:34   #386  |  Link
jpsdr
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Join Date: Oct 2002
Location: France
Posts: 2,319
Quote:
Originally Posted by sneaker_ger View Post
--sar 1:1 and bt709 are not allowed for PAL. See start post.
I thought the video was 1080p.
If video is indeed 576i, that's a total another story.
A lot of optimization can be done indeed.
Reduce the level to 4.0 to avoid slices, and reduce buffer/bitrate max to 15000 to have 2s GOP length.
Buffer and bitrate max at 15000 is very largely enough to properly encode a 576i video. This will allow a max keyint of 50, which will produce even better results.
i would suggest for 576i :
Code:
--profile high --level 4.0 --vbv-maxrate 15000 --vbv-bufsize 15000 --keyint 50 --ref 6 --open-gop
No need for slices. And as video is only 576i, you can increase ref frames to 6.
The sar is according the video, is it a 4/3 or 16/9 video ?
4/3, you have to use :
Code:
--sar 12:11
16/9, you have to use :
Code:
--sar 16:11
The color for pal 576i is :
Code:
--colorprim bt470bg --transfer bt470bg --colormatrix bt470bg --videoformat pal

Last edited by jpsdr; 6th June 2017 at 19:46.
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