[FFmpeg-devel] TR-03 implementation

Rostislav Pehlivanov atomnuker at gmail.com
Fri Nov 11 00:37:17 EET 2016


On 10 November 2016 at 21:59, Michael Niedermayer <michael at niedermayer.cc>
wrote:

> On Thu, Nov 10, 2016 at 08:33:12PM +0000, Rostislav Pehlivanov wrote:
> > On 10 November 2016 at 19:44, √Čloi Bail <eloi.bail at savoirfairelinux.com>
> > wrote:
> >
> > > Hi all,
> > >
> > > Media broadcasters tend to move on carriage of live professional media
> > > over IP. A group has been set up to recommend a standard for that, and
> > > they produced the TR-03. It is only a recommendation, but it should be
> > > close enough to what the SMPTE will adopt to start working on it.
> > >
> > > Radio Canada/CBC, a major Canadian broadcaster, wants to make FFmpeg
> > > compatible with TR-03 and SMTPE future standard.
> > >
> > > Video pixel format is defined in RFC4175 (4.3. Payload Data) for YCbCr
> > > format video. According to the discussion we had on #ffmpeg-devel
> > > yesterday, lots of those pixel formats are not supported in FFmpeg.
> > > These pixel formats are designed to group together all the samples of a
> > > pixel group.
> > >
> > >
> > Conversions and the formats already exist in another repository:
> > https://github.com/kierank/ffmpeg-sdi
> > Explaining what pixel packing formats are to us is like preaching to the
> > choir.
> >
> >
> > > A solution would be to repack the samples into a compatible format, eg.
> > > planar. Repacking samples seems not to be an appropriate solution
> > > because it has an impact on performance, specially dealing with high
> > > resolution uncompressed streams.
> > >
> > > We would like to contribute to FFmpeg by adding the support of those
> pixel
> > > formats and thus make FFmpeg usable for the next generation of
> > > broadcasting products.
> > >
> >
> > This paragraph almost made me vomit and use swear words in this email. We
> > don't need more broadcasting shit in ffmpeg.
>
> please try to stay polite.
> this tone of this mail is definitly not how you should reply to
> someone wanting to contribute and asking a question about it
>
>
> [...]
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> In a rich man's house there is no place to spit but his face.
> -- Diogenes of Sinope
>
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>
Sorry, I was very hasty and didn't pick my words right. I didn't mean to
offend anyone nor to start a war.


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