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Old 3rd January 2012, 21:09   #1  |  Link
parent5446
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FPS-based ratecontrol on 2pass?

So according to this: http://git.videolan.org/?p=x264.git;...152e5cfe746d43

When using CRF the FPS of the video is taken into account. Will 2pass (and other modes) take this into account as well or does this only apply to CRF mode?
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Old 3rd January 2012, 21:16   #2  |  Link
Blue_MiSfit
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Quote:
When using CRF the FPS of the video is taken into account
That's not how I read the post. I read it as saying that rate control in general is VFR aware.

CRF is affected by this, but it's not the only rate control method capable of VFR. I could be wrong, but I think this is accurate.

Derek
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Old 3rd January 2012, 21:50   #3  |  Link
parent5446
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I don't doubt that I probably misunderstood the commit message. Unfortunately I cannot find any resources that explain video encoding. I still have no idea what an MB-tree or VFR is, and not for lack of trying.
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Old 3rd January 2012, 22:04   #4  |  Link
sneaker_ger
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VFR
MB-tree (scroll down to the FAQ:"What does it actually do?")

I agree with Blue_MiSfit, x264's bitrate distribution is VFR-aware in all modes IIRC, not just CRF.

Last edited by sneaker_ger; 3rd January 2012 at 22:08.
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Old 3rd January 2012, 22:05   #5  |  Link
Dark Shikari
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All ratecontrol modes consider the frame duration in their calculations.
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Old 3rd January 2012, 22:10   #6  |  Link
parent5446
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Quote:
Originally Posted by Dark Shikari View Post
All ratecontrol modes consider the frame duration in their calculations.
Kk. Thanks.

(And thanks for the resources.)
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