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View Full Version : Any notes/comments about x264 r2491?


benwaggoner
2nd December 2014, 18:42
I see r2491 is out now.

Is there any documentation other than here?

http://git.videolan.org/?p=x264.git;a=log;h=refs/heads/master

I must say commits described as just "Fix VBV" are exciting and potentially terrifying, and certainly could use some more explanation!

The number of people in the world who can usefully read x264 code changes and fully understand their implications is much smaller than the number of advanced users of x264. It would be very useful to have some idea of what was broken before, and what the fix changes.

MasterNobody
2nd December 2014, 20:02
It is not so easy to say what was fixed without showing examples (i.e. without source sample which was used to reproduce bug) because it was rather general VBV bug and that why it is simple "VBV Fix". It fixes visual artifacts from VBV overprotection which was caused by tight VBV limits on stream having long still (blank) image and after that normal video from camera. Also it was mainly reproducible only with --sliced-threading (--tune zerolatency).

GMJCZP
3rd December 2014, 17:18
I am no expert on this matter, but when I read the word "artifacts" I remembered this:

Here (http://forum.doom9.org/showthread.php?p=1698155#post1698155)

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