[HELP] aomenc greyed-out options

[The_Tinkerer]

Starting to look at other encoders than x264. (This is probably not good.. oh no.)

For aomenc (av1), how do you get the following ungreyed:


Color space on "Base" tab



"Noise reduction" settings on "Frame" tab



(I'm reading this tuning thread on Reddit and I feel like the noise reduction settings may be something that might be good to be able to control... for VP9, the options are not greyed out and I use 5 and 3.)


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Also, this setting is greyed out:



This is not greyed out on VPX (VP9). It's supposed to be active for 2-pass encodes in aomenc, but selecting a 2-pass encode in Hybrid for aomenc doesn't ungrey it.

From this Reddit thread on tuning VP9:

"Activates alternate reference frames. Alternate reference frames are 'invisible' frames, never shown to the user, but which are used as a reference when creating the final frames. This allows the encoder to be a lot more efficient, so always use it. It is the default in the standalone vpxenc libvpx-vp9 encoder as of libvpx 1.9.0 and 1.10.0."

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OK, so, I think that for aomenc, selecting a 2-pass encoding mode should ungrey Alternate reference reduction frame decision, and both Noise reduction fields. That is the behavior for VPX. So I'm guessing it's a bug! 

[Selur]

"aomenc->Base->Format->Color Space" is greyed out since aomenc is always YUV and only the color sampling matters.
It only offers:

--yv12                      Input file is YV12
            --i420                      Input file is I420 (default)
            --i422                      Input file is I422
            --i444                      Input file is I444

see: "aomenc --help"

"aomenc->Frame->Noise reduction" + "alternate reference reduction frame decision" are only enabled for 2pass bitrate encoding.
(noise reduction requires "alternate reference reduction frame decision" > 0)

Did you actually test that " --passes=2 --pass=1 --end-usage=cq " actually uses noise redcution and "alternate reference reduction frame decision" ?
-> If they do, I can enabled these two.

Since constrained 2pass encoding did not exist when I implemented it and the aoemenc documentation is simply bad.
Don't really care about reddit posts unless they reference to an official documentation.


Cu Selur

[Selur]

"aomenc->Base->Format->Color Space" is greyed out since aomenc is always YUV and only the color sampling matters.
It only offers:

--yv12                      Input file is YV12
            --i420                      Input file is I420 (default)
            --i422                      Input file is I422
            --i444                      Input file is I444

see: "aomenc --help"

"aomenc->Frame->Noise reduction" + "alternate reference reduction frame decision" are only enabled for 2pass bitrate encoding.
(noise reduction requires "alternate reference reduction frame decision" > 0)

Did you actually test that " --passes=2 --pass=1 --end-usage=cq " actually uses noise redcution and "alternate reference reduction frame decision" ?
-> If they do, I can enabled these two. (send you a dev version for testing)

Since constrained 2pass encoding did not exist when I implemented it and the aoemenc documentation is simply bad.
Don't really care about reddit posts unless they reference to an official documentation.


Cu Selur

[The_Tinkerer]

Thanks for the beta, I'll test it later, I find with VP9 it makes a difference on high saturated parts of the image (i.e. bright reds) with lots of detail. I check it with the same content.