[Cin] trying to fix libopus for 5.1 sound

[Andrew Randrianasulu]

вт, 23 апр. 2024 г., 13:12 Andrew Randrianasulu <randrianasulu at gmail.com>:

>
>
> вт, 23 апр. 2024 г., 13:09 Andrea paz <gamberucci.andrea at gmail.com>:
>
>> > But then can you try ffmpeg 7 with and without patch just in case it
>> only affects ffmpeg 7.0?
>>
>> Still the same result.
>>
>
>
> Thanks! Then, if real channel order not affected (hopefully something you
> can confirm by looking at audio track's waveforms) I guess this patch
> really not needed, sorry!
>


small dig on what this parameter mean resulted in this link:

https://www.iana.org/assignments/opus-channel-mapping-families/opus-channel-mapping-families.xhtml

====
Available Formats
CSV
<https://www.iana.org/assignments/opus-channel-mapping-families/mapping-families.csv>
Value Description Reference
0 Mono, L/R stereo [RFC7845, Section 5.1.1.1
<https://www.iana.org/go/rfc7845>][RFC8486, Section 5
<https://www.iana.org/go/rfc8486>]
1 1-8 channel surround [RFC7845, Section 5.1.1.2
<https://www.iana.org/go/rfc7845>][RFC8486, Section 5
<https://www.iana.org/go/rfc8486>]
2 Ambisonics as individual channels [RFC8486, Section 3.1
<https://www.iana.org/go/rfc8486>]
3 Ambisonics with demixing matrix [RFC8486, Section 3.2
<https://www.iana.org/go/rfc8486>]
4-239 Unassigned
240-254 Experimental use [RFC8486, Section 6
<https://www.iana.org/go/rfc8486>]
255 Discrete channels
[RFC7845, Section 5.1.1.3 <https://www.iana.org/go/rfc7845>][RFC8486,
Section 5 <https://www.iana.org/go/rfc8486>]
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