[FFmpeg-user] Fwd: Command line to show channel label/position

[MrNice]

>>
>> Thank you L. I'll use Mediainfo, I have it installed but I thought 
>> ffprobe has a command for that.
>>
>> BTW, could you tell me, How the decoder will sort out the channels to 
>> send to the right speaker ?
>> - by the list order, I mean first to FL, second to FR, and so on
>> - or by the label, and what happen when there is no label or multi 
>> mono channels ?
>
> I’m not sure I have an answer for that, but maybe you can use the 
> disposition resource page I linked to run some of your own 
> experiments. For example, make your own stereo recording of a 
> statement such as “this is the left channel” with the right mic turned 
> off. Then use the disposition instructions to move and/or copy it to 
> the channel of your choice, then audition the results. If you want, 
> and have the necessary equipment, you should be able to reassign any 
> existing audio channel to any other.
>
> L. Lee
> _______________________________________________
>
> I came accross this command. Is it reliable?
>
> ffprobe -v error -show_entries stream=channel_layout -of csv=p=0 
> filename.flac
> ffmpeg -v error -layouts | awk '/5.1 /{print $2}'
>
> Thanks
> _______________________________________________
>
I have an audio file, with MediaInfo I get

Audio
Format                                   : FLAC
Format/Info                              : Free Lossless Audio Codec
Duration                                 : 2 min 18 s
Bit rate mode                            : Variable
Bit rate                                 : 5 439 kb/s
Channel(s)                               : 4 channels
Channel layout                           : L R Ls Rs
Sampling rate                            : 96.0 kHz
Bit depth                                : 24 bits
Compression mode                         : Lossless

With the above ffprobe command, I get

 > ffprobe -v error -show_entries stream=channel_layout -of csv=p=0 
101Be.flac
quad
 > ffmpeg -v error -layouts | awk '/quad /{print $2}'
FL+FR+BL+BR

What is the correct answer?