Re: [FFmpeg-devel] 5.0 release

From: Paul B Mahol <onemda@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] 5.0 release
Date: Mon, 3 Jan 2022 19:04:48 +0100
Message-ID: <CAPYw7P6oZdy2wHmWn=CJ+uR9Crjn=yh6xmP2Up4=EfF2XCcjSw@mail.gmail.com> (raw)
In-Reply-To: <CA+anqdwdthnuY=9e1_xUdD=nny5Kf4XAe1UV8yxFruoLgncgrA@mail.gmail.com>

On Mon, Jan 3, 2022 at 6:18 PM Hendrik Leppkes <h.leppkes@gmail.com> wrote:

> On Mon, Jan 3, 2022 at 5:14 PM Michael Niedermayer
> <michael@niedermayer.cc> wrote:
> >
> > On Mon, Jan 03, 2022 at 06:31:37AM +0100, Jean-Baptiste Kempf wrote:
> > > On Fri, 31 Dec 2021, at 20:40, Michael Niedermayer wrote:
> > > >> It would be nice to have a public date set a few days into the
> future.
> > > >
> > > > yes, i intended to do that, unless people wanted a ASAP/NOW branch
> > >
> > > So what are the open topics, besides the Audio Channel Layout API?
> >
> > the mov issue was fixed, channels dont seem to happen
> > theres a regression with 946493eb3e072b499909f606625480c928834a44
> > that ive reported 1 day after the patch was posted and pinged 11 days
> later
> >
> > 221073 rsF 1112 16:11 To ffmpeg-devel (2,3K) Re: [FFmpeg-devel]
> [FFmpeg-cvslog] avcodec/mlpdec: cover case when >2 channels are in single
> substream
> > 221074  sF 1123  0:00 To ffmpeg-devel (3,5K) └─>
> >
> > thats not branch blocking, a bugfix is just a normal backport
> > I dont have the file that 946493eb3e072b499909f606625480c928834a44 fixes
> > so trying to fix it is like working blindfolded, thats why ive so far
> > waited for the author to respond and take a look
> >
>
> As far as I can tell, the recent mlpdec changes seem to be intended to
> fix playback of streams made by our own experimental encoder, and not
> independent samples.
> So perhaps those should be reverted for a stable release (or
> generally), seeing as there is no response 2 months later, and no
> indication what they actually fix.
>
> The  available whitepapers and bitstream syntax document on TrueHD/MLP
> also do not seem to support more then 2 channel in the first
> substream, limiting it to a stereo presentation in the first, up to 6
> channel in the second, and up to 8 channel in the third substream (and
> 16 in the extended substream)
>

This statement is not in sync with reality.

I have sample that 946... fixes, single stream with > 2 channels.

>
> Unfortunately the patch was also never on the ML for discussion or review.
>
> - Hendrik
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