[FFmpeg-user] Parsed_pan_0 This syntax is deprecated. Use '|' to separate the list items

[Kimio Miyamura]

2014/11/18 18:32, Carl Eugen Hoyos <cehoyos <at> ag.or.at> wrote: 

> Kimio Miyamura <xanadu <at> apost.plala.or.jp> writes:
> 
>> What this waring mean and how should it be?
> 
> Use "|" instead of ":" to silence the warning.

Thanks Carl.  I have changed the command and it works without waring.
 
ffplay -i ~/Movies/More\ Than\ You\ Know.mp4 -af "pan=stereo|FL<FL+FC+BL+SL|FR<FR+FC+BR+SR"

I think online documentation should be fixed.  How do you think?

https://ffmpeg.org/ffmpeg-filters.html#pan

https://trac.ffmpeg.org/wiki/AudioChannelManipulation

> Just to make sure: You do know that this is not the 
> best way to downmix, you are using the pan filter 
> because you know exactly what you are doing?

Well, I have got use pan filter just a result of try and error.  https://trac.ffmpeg.org/wiki/AudioChannelManipulation seems to suggest me to use -ac 2 option, but my 5.1ch mp4 does not play full audio with -ac 2 option...

Or is there correct way to downmix audio any other?


// Miya