[FFmpeg-devel] TR-03 implementation

Michael Niedermayer michael at niedermayer.cc
Thu Nov 10 23:59:31 EET 2016


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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