[FFmpeg-devel] [PATCH] avformat/mxfdec: support MCA audio information

[Marton Balint]

On Sat, 1 Jan 2022, Pierre-Anthony Lemieux wrote:

> Minor suggestion below.
>
> In addition, will sample file(s) be added to FATE? Below are two examples:
>
> http://ffmpeg-imf-samples-public.s3.us-west-1.amazonaws.com/callout_51_l_r_c_lfe_ls_rs.mxf
> http://ffmpeg-imf-samples-public.s3.us-west-1.amazonaws.com/callout_51_l_c_r_ls_rs_lfe.mxf

Good idea, can someone with access please upload these to the fate mxf 
folder?

[...]

> I suggest adding the following audio channels, which are specified in
> SMPTE ST 2067-8 [1] and have a direct mapping to ffmpeg audio
> channels:
>
> urn:smpte:ul:060e2b34.0401010d.03020120.03000000 (Left Total) ->
> AV_CH_STEREO_LEFT
> urn:smpte:ul:060e2b34.0401010d.03020120.04000000 (RightTotal) ->
> AV_CH_STEREO_RIGHT
>
> [1] https://registry.smpte-ra.org/view/published/labels_view.html

Unfortunately this is a Dolby encoded stereo mix, not an ordinary LeftOnly 
/ RightOnly mix. So I am not how this should be signalled.

Regards,
Marton