I published a python script that does the encoding, mux'ing, and metadata
injection for ".amb" files to YouTube VR videos. Sox and ffmpeg do the
heavy lifting.
https://bitbucket.org/ambidecodertoolbox/amb2yt
Example output at:
https://youtu.be/eY9DMn8pgGA
You need to view it in Chrome on a desktop/laptop or the YouTube app on an
iPhone (and I presume Android, but have no way to test it).
Aaron
On Tue, Oct 24, 2017 at 5:48 AM, Marc Lavallée <m...@hacklava.net> wrote:
>
> FB also have their own specs, and some info can be found here
> (without a FB account):
> https://facebookincubator.github.io/facebook-360-spatial-workstation/
>
> --
> Marc
>
> On Tue, 24 Oct 2017 08:30:54 -0400, I wrote:
> > Hi Oliver.
> >
> > To my knowledge there's nothing special about muxing more than 2
> > channels of audio with a video stream. Once a video file and a
> > multi-channel audio file are ready to mux, FFmpeg can do it (MP4Box
> > is also useful for MP4 streams). About mixing codecs: there's cases
> > where the MKV container is required; for example, H-264 + Opus, but I
> > could be wrong. What I found difficult (3 years ago) was to prepare
> > and render multi-channel audio streams and save them in the AMB
> > format, but now I suppose there's more options.
> >
> > I did not know about VLC3 and its ambisonics support.
> > But I can see here:
> > https://twitter.com/m4gsoft/status/890127816842465280
> > That the support is based on Google specs:
> > https://github.com/google/spatial-media
> > I guess that the produced files can also be decoded to speaker arrays.
> >
> > P.S.2: I'd be trilled to consult the FB page that Umashankar
> > suggested, but it requires a login and I'll never get a FB account.
> > So any useful info found on FB should be forwarded to
> > non-big-brothered repositories. --
> > Marc
> >
> > Le Tue, 24 Oct 2017 12:03:02 +0100
> > Oliver Larkin <olilar...@googlemail.com> a écrit:
> >
> > > Hi All,
> > >
> > > Is anyone is aware of a good resource that will help me learn about
> > > muxing video with ambisonic audio? I don’t have much experience with
> > > audio for video full stop and I am confused about what is possible
> > > with different codecs. I haven’t been able to find comprehensive
> > > info online. I would like to know what video formats/containers for
> > > both audio and video i can use to distribute video + HOA audio
> > > (although knowing about what’s possible for FOA audio would also be
> > > great). Web based playback is what this is really for, but I would
> > > also like to know about high quality options for downloads, since
> > > VLC 3 does TOA. Not sure if this will allow a custom decoder or if
> > > it’s just for binaural.
> > >
> > > Sorry for a bit of an open ended question, but if anyone has any
> > > tips i’d really appreciate it.
> > >
> > > Thanks!
> > >
> > > Oli
> > >
> > >
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