converting a 3gp video file into a different format

Can I ask for some advice in converting a video (from my phone) which is a 3gp file into something more universal.

I use audokonverter for audio files and this gives me a menu right-click option to convert a song from (say) wav to mp3. Is there an equivalent for videos? I am using opensuse 11.4 64 bit and have mplayer, xine and vlc installed plus the necessary codecs.

Or is it simpler to use ffmpeg in a c/l environment. If so can someone please suggest a suitable command.

Many thanks

Found a programme:-

https://build.opensuse.org/package/show?package=mobile-media-converter&project=home%3Adeltafox

But is there a menu right-click option one.

Thanks