[MEncoder-users] map audio to video

[James Hastings-Trew]

Tobias Brockamp wrote:
> Am 18.09.2007, 16:21 Uhr, schrieb Nico Sabbi <Nicola.Sabbi at poste.it>:
>
>   
>> Tobias Brockamp wrote:
>>
>>     
>>> Hi,
>>>
>>> i have a video file which does not contain an audio stream. I want take
>>> another video file as input and only encode the audio-stream from this  
>>> file
>>> and "add" it to the first video.
>>>
>>> I have no idea if it is possible, anybody an idea?
>>>
>>> Kind regards,
>>>
>>> Tobias Brockamp
>>>
>>>
>>>
>>>       
>> RTFM
>> mencoder videofile -audiofile x.wav -ovc copy -oac copy final.avi
>>     
>
> I don't think this would help. Once again with an example.
>
> Two files available
>
> 1. video file without audiostream (file01.avi)
> 2. video with both audio and video (file02.avi) no *.wav
>
> mencoder should encode the audiostream from file02.avi and write the  
> output in file01.avi.
>
> is this possible in any way
It would have to be a two stage operation:
1) get the .wav file:
mplayer file02.avi -vc null -vo null -ao pcm:fast
2) encode it with your video file:
mencoder file01.avi -audiofile audiodump.wav -ovc copy -oac lavc (or 
whatever you want to use) -o newfile.avi