Re: [FFmpeg-devel] FFmpeg TC input needed

[Gyan Doshi <ffmpeg@gyani.pro>]

On 2024-02-17 07:12 pm, Niklas Haas wrote:
> On Sat, 17 Feb 2024 18:45:57 +0530 Gyan Doshi <ffmpeg@gyani.pro> wrote:
>>> Whilst s302m multiple substreams I haven't seen, Dolby E streams internally
>>> contain multiple programs, often 5.1 and a 2.0 downmix.
>> That is downstream of the Dolby-E decoder and user will have to use a
>> filter like channelsplit to bifurcate
>> those channels irrespective of where the s302m code resides.
> Is there metadata in Dolby E that tells you which channels belong
> together (and what attributes they might have)? Is it always 5.1+2.0, or
> could you have e.g. four different 2.0 programs encoded into a single
> S302M/AES3 stream?

Yes, the metadata is program configuration, with 8 max channels and 8 
max programs, so 8 mono programs at most.
But my samples are all 5.1+2 or 7.1 or 4.0. These will all result in a 
single decoded stream from the dolby_e decoder.

Regards,
Gyan

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