[Cin] vp9 high bit depth, vp9 lossless profile

Andrew Randrianasulu randrianasulu at gmail.com
Wed Mar 9 01:01:31 CET 2022

On Wednesday, March 9, 2022, Phyllis Smith <phylsmith2017 at gmail.com> wrote:

> Checked vp9 related patches into GIT.
> so I  played around with vp9 enciding a bit more.
>> apoarently there is vp9 lossless mode, and additionally libvpx can
>> support high bit depth if configured so.
> Tested on my laptop and the lossless file is, as expected, 15 times larger
> but looks better.  Thank you Andrew.
> Will compiling with vp9 multibit affect any loading or rendering of
> vp8/vp9?  I will try to check this and test it too.

not sure why this still not default - may be due to libvpx size or speed?

>> I also tried to remove (currently unused?) libavdevice build from ffmpeg,
>> and fix termux breakage (libandroid-shmem lib was missing)
> This I did not check in yet because my early morning tests were flawed --
> I only had the configure.ac patch portion in and not the
> thirdparty/Makefile patch because I was testing the vp9 multibit.  So I
> have to start over with that and right now am at least compiling on Debian
> 9.1 32-bit just to make sure it compiles.
>> try attached patches and check if vdpau/vaapi still works?
> Got to redo my tests.  I am concerned about potential impact, not to
> vdpau/vaapi, but rather to v4linux2 and alsa and captures from devices.

yeah, while I think this specific  library not used yet in CinGG at least -
I am not sure...
so, thanks for testing..
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