[FFmpeg-devel] [PATCH 1/5] avutil/channel_layout: add 22.2 layout

[Nicolas George]

Jan Ekström (12020-08-02):
> I think I've seen it mentioned recently when I've been discussing this
> patch set, so I have a feeling we might see a new version of that at
> some point. We already had multiple channels which were outside of
> WAVEFORMATEXTENSIBLE (such as LFE2), so a more defining API is clearly
> going to be more needed in the future (since the channels aren't
> always in the rising order of definition due to how things were
> defined age-wise).

I did not see anything recently. As far as I remember, the proposal had
serious limitations that must be addressed before it can be accepted:

- It has nothing to handle cases where the same channel is present twice
  in the layout. For example, no syntax for the user to specify "FL, but
  the second one".

- It has nothing to set extra labels and information about each channel.

As it is, it is more complex than our current very simple bit mask but
does not bring real benefit over it. As such, it is not worth it.

Regards,

-- 
  Nicolas George
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