[Cin] DCA encoder working, TrueHD probably need patch

Andrew Randrianasulu randrianasulu at gmail.com
Mon Oct 28 23:07:05 CET 2019

В сообщении от Tuesday 29 October 2019 01:04:55 Phyllis Smith написал(а):
> Andrew:
> Hi, I tried MLP/trueHD audio encoding in CinGG, but it was failing even
> > with "strict -2" set in option files, probably need this patch:
> >
> >
> > https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/808a6717e0c584738c60a109afd6d47f4973d619
> >
> GG tried with this patch with truehd and it still failed.  He will check
> into GIT dca.qt but not mlp or truehd.  Since the patch as quoted above was
> only created in July/August, maybe at some future date it will be an
> automatic part of an ffmpeg release and be fixed to work.  Even if it
> worked, he does not want to take the chance of carrying a patch that may or
> may not be later incorporated into a standard release.

OK, I understand this.

> QUESTION for you -- why "threads=2" in nagicyuv.qt and utvideo.qt ? GG is
> OK with this, but was wondering if that makes it run better on your
> computer ? And is there a limit of only 2 ?   Just curious...

Simply because I have 4 core machine (AMD quad-core, family 15h - so, some features shared between cores)
and I want to capture some heavy stuff like qemu-system-ppc :}

Feel free to change on commit.

PS: thanks for pix_format explanation!

PPS: v410 also saw some threading optimizations -
[FFmpeg-devel] [PATCH v1] avcodec/v410dec: add the frame and slice threading support


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