Re: [Bino-list] Release plans

[Martin Lambers]

On 18/04/11 12:28, David Corrigan wrote:
> This may not be of widespread interest but we have a number of 3d
> stereo recordings that also have audio recording in a 1st order
> ambisonics format.
> For those who may not know, ambisonics is a 3d audio format that can
> easily be used to generate signals for the conventional surround sound
> formats (eg, stereo, 5.1 surround sound etc.)
> We were considering implementing an option to bino that would allow
> for processing of ambisonics recordings and would allow the user to
> select the desired surround sound format.
> We may get time to look at implementing it over the summer but we will
> make available the video sequences with the audio recordings over the
> web over the coming weeks.
> 
> It would be interesting to know what you think.

Sounds interesting! The basic decoder for ambisonic streams/files should
probably be part of FFmpeg. The conversion to a particular output format
(5.1 or whatever) might also be implemented as an FFmpeg filter, but it
might also be standalone. Bino could then choose the right conversion
based on user input, with the default probably based on the capabilities
of the audio device.

One question: does the conversion of ambisonic audio to an output format
require a HRTF?

Martin