[MEncoder-users] Spliting bilingual audio into separate streams

[Nico Sabbi]

Duncan Webb wrote:

>Guillaume POIRIER wrote:
>  
>
>>Hi,
>>
>>On 12/20/06, Duncan Webb <duncan-mp at linuxowl.com> wrote:
>>    
>>
>>>Hi all,
>>>
>>>I hope that this is not a stupid question, having looked around a bit
>>>the answer is not too easy to find.
>>>
>>>A mpeg stream recorded from the television sometimes has bilingual
>>>audio, i.e. the left channel is English and the right channel is German,
>>>rather than two audio streams. Is it possible to separate the audio with
>>>mencoder into to separate streams with one language coming out from both
>>>speakers?
>>>
>>>And if so what are the correct options?
>>>      
>>>
>>You should be able to get what you want with audio filters -af
>>channels and -af pan
>>    
>>
>
>Must admit, I had already figure out channels. I didn't realise that the
>pan filter could do this though.
>
>Something like, for channels:
>-af channels=2:2:0:0:0:1 pan 2:0
>-af channels=2:2:1:1:1:0 pan 2:1
>
>I just don't understand the pan option, who can read and understand
>this, and what do negative value mean?
>pan=2:.32:.32:.39:.06:.06:.39:.17:-.17:-.17:.17:.33:.33
>
>  
>

maybe -af pan=1:1:0 and -af pan=1:0:1