linuxaudio.org

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On Mar 4, 2012 7:12 PM, "Robin Gareus"  wrote:

quoted text
>

> On 03/04/2012 07:48 PM, James Stone wrote:

> > Hi List,

> >

> > I have a video which needs a bit of eq'ing on the audio side. Can

> > anyone point me in the direction of how to split the file into audio

> > and video so I can apply some treatment to the audio, and then combine

> > them back together again? The video is wmv at the moment, but mplayer

> > doesn't seem to have any problem with it.

> >

>

> #extract audio

> ffmpeg -i orig_video.wmv audio_out.wav

>

> #replace audio

> ffmpeg \

>  -i orig_video.wmv \

>  -i new_audio.wav \

>  -vcodec copy \

>  -map 0.0 -map 1.0 \

>  new_video.wmv

>

>

> Details:  The "map" may be different depending on the .wmv file.

> run `ffprobe` to see which is the video-track in the .wmv file

> usually this is "0.0".

>    Stream #0.0: Video:...

>    Stream #0.1: Audio: ..

> and "1.0" corresponds to the 2nd input file - your new audio.

>

> You may want to add "-acodec wmav2" and "-ar 128k" options for 128kbit/s

> Windows Media Audio 2 or whatever audio-codec/quality your want. `ffmpeg

> -codecs | grep "EA"` gives you a list of available codecs for Encoding

> Audio.

>

Thanks. It is 0:0 and 0:1 and -b:a=192k I found, but I have some sync

problems after recombining tho. Any other ideas?
> BTW. Ardour3 with videotimeline patch can do all this for you.

quoted text
> import,extract,re-encode using ffmpeg.

>

> robin

--047d7b33d60c2a066504ba79bc0c

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On Mar 4, 2012 7:12 PM, "Robin Gareus" <robin@gareus.org> wrote:

quoted text
>

> On 03/04/2012 07:48 PM, James Stone wrote:

> > Hi List,

> >

> > I have a video which needs a bit of eq'ing on the audio side.=

 Can

quoted text
> > anyone point me in the direction of how to split the file into au=

dio

quoted text
> > and video so I can apply some treatment to the audio, and then co=

mbine

quoted text
> > them back together again? The video is wmv at the moment, but mpl=

ayer

quoted text
> > doesn't seem to have any problem with it.

> >

>

> #extract audio

> ffmpeg -i orig_video.wmv audio_out.wav

>

> #replace audio

> ffmpeg \

> =C2=A0-i orig_video.wmv \

> =C2=A0-i new_audio.wav \

> =C2=A0-vcodec copy \

> =C2=A0-map 0.0 -map 1.0 \

> =C2=A0new_video.wmv

>

>

> Details: =C2=A0The "map" may be different depending on the .=

wmv file.

quoted text
> run `ffprobe` to see which is the video-track in the .wmv file

> usually this is "0.0".

> =C2=A0 =C2=A0Stream #0.0: Video:...

> =C2=A0 =C2=A0Stream #0.1: Audio: ..

> and "1.0" corresponds to the 2nd input file - your new audio=

.

quoted text
>

> You may want to add "-acodec wmav2" and "-ar 128k"=

 options for 128kbit/s

quoted text
> Windows Media Audio 2 or whatever audio-codec/quality your want. `ffmp=

eg

quoted text
> -codecs | grep "EA"` gives you a list of available codecs fo=

r Encoding

quoted text
> Audio.

>

Thanks. It is 0:0 and 0:1 and -b:a=3D192k I found, but I have some sync =

problems after recombining tho. Any other ideas?

quoted text
> BTW. Ardour3 with videotimeline patch can do all this for you.

> import,extract,re-encode using ffmpeg.

>

> robin

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