converting video error

**hnf a** · January 8th, 2013

hi all i have question how to convert and extract audio from video file, i
have try avconv but it says the codec was unknown i also write -acodec mp3 libx264 h264 and other codec but but the avconv always says unknown codec and so the winff, winff however can convert to wma or audio file but its corrupted, am i should download the codec?

**deadflowr** · January 8th, 2013

If you want an easy to use way to extract the audio from your video file, install audacity.
It will automatically convert the video file into an audio file which you can export as any of a number of formats, including mp3,ogg,flac,wav, and so on.

**sudodus** · January 8th, 2013

+1

Audacity is a good tool for audio (extraction, conversion, 'any' treatment)

install it from the repos, and if it doesn't work, try to install more codecs and such things.

I find the following packages useful

gstreamer0.10-plugin-ugly
gstreamer0.10-plugin-bad

If you have the appropriate program sources activated, you can find and install them with Synaptic (and you can select the program sources with Synaptic too).

I have them from
precise/universe: 'ugly'
precise-updates/universe: 'bad'

**hnf a** · January 9th, 2013

thanks for the reply,i think audcity great for it but how about resizing video?

**sudodus** · January 9th, 2013

Originally Posted by hnf a

thanks for the reply,i think audcity great for it but how about resizing video?

Then you need another tool.

I use Openshot to edit the video clips from my camera and export to a suitable format. It is a GUI application.

I use ffmpeg to convert video clips (resizing, changing codec etc). It is a command line tool. There is a GUI frontend, WinFF, than can do some of the tasks that can be done with ffmpeg.

**hnf a** · January 9th, 2013

the problem is in the end of converting process the terminal write "unknown encoder 'libmp3lame'"

**sudodus** · January 9th, 2013

Originally Posted by hnf a

the problem is in the end of converting process the terminal write "unknown encoder 'libmp3lame'"

You need to install the codecs that you plan to use. Use Synaptic to search for the codec or see this link

http://askubuntu.com/questions/13737/what-packages-do-i-install-for-ffmpeg-and-libmp3lame

**hnf a** · January 10th, 2013

oh thanks for the reply now i can convert to avi

**dannyboy79** · January 10th, 2013

i use handbrake or avidemux to convert video formats. for video editing I use kdenlive from sunab's ppa's for either stable kdenlive-release or latest from git kdenlive-svn