#10706: support MVC 3D (Multiview Video Coding) for H.264
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Reporter: philcerf | Type:
| enhancement
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Hey.
As far as I [http://ffmpeg.org/pipermail/ffmpeg-
user/2023-November/057209.html understood], ffmpeg as of now, does not yet
support MVC.
[https://en.wikipedia.org/wiki/Multiview_Video_Coding MVC 3D] is an
addition to H.264 which allows for 3D movies.
It is also the format that is used by [https://en.wikipedia.org/wiki/Blu-
ray#Blu-ray_3D BluRay 3D].
As far as I know, there is no corresponding technique for e.g. H.265.
I'm a total noob when it comes to video formats, 3D display devices and
the likes. So I have no real idea what "support" from ffmpeg side should
even look like.
I guess, that when one has an output device (like a 3D capable projector,
a 3D TV screen or glasses/VR-headsets like the "Bigscreen Beyond" or the
"XREAL AR glasses") and if that does support MVC itself, then ffmpeg
wouldn't need to do much except for passing the stream on as is (and the
only thing that would be required was some Linux driver, for the said
device.
But it seems that quite some devices do not support MVC directly, but
require e.g. SBS (side by side) input.
Right now, many people seem to use
[https://download.videohelp.com/r0lZ/BD3D2AVS/index.html BD3D2MK3D], but
its not open.
So would be nice if any ffmpeg MVC support could be used together with its
stereo3d filter to generate e.g. SBS output.
"3D is dead" - so is it even worth it?
Well, there are still many movies released as 3D movies, not only in the
cinema but also on home media (i.e. BluRays).
And while 3D TV screens are probably indeed rather dead, there seem to be
still quite many 3D projectors and glasses/VR set being released and in
development.
I have found [https://github.com/carrardt/h264-tools h264-tools] which
seems to be able to decode MVC and create SBS versions of it and
[https://github.com/Britz/FFmpeg Britz/FFmpeg] which seems to have been a
master thesis for MVC support in ffmpeg, but I guess got never merged.
Test files:
I'm a bit reluctant of publicly sharing such, as these will be typically
very large and copyrighted. But in case someone would indeed want to work
on this and doesn't have his own 3D movies, I could privately share some
test files.
Thanks,
Philippe
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10706>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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