29.01.2021, 06:03
VP8/VP9/av1 don't have a custom additions option since nobody ever asked for it. 
Sadly I couldn't find any documentation of the developers about it whether aomenc supports this.
If you have the time you could test whether aomenc does support this.
Sadly the google team takes ages to:
a. care about bug reports (regarding vp8/vp9/av1) (after waiting for one bug report for 2years to get a reply, I gave up reporting problems to them)
b. update or provide any accurate documentation.
-> I can look into implementing 'constrained quality (2pass)'- and 'custom addition'-support over the weekend (probably on Sunday).
Cu Selur
Sadly I couldn't find any documentation of the developers about it whether aomenc supports this.
If you have the time you could test whether aomenc does support this.
Sadly the google team takes ages to:
a. care about bug reports (regarding vp8/vp9/av1) (after waiting for one bug report for 2years to get a reply, I gave up reporting problems to them)
b. update or provide any accurate documentation.
-> I can look into implementing 'constrained quality (2pass)'- and 'custom addition'-support over the weekend (probably on Sunday).
Cu Selur
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.