Exporting playblasts to mp4 (edit: now supports mpg, wmv and avi too) in Linux was taking me a lot of time since i always went to command line tool avconv to convert it. So i thought of exploring my skills in Python and Pyqt4 to make a GUI for it. Thanks to Justin Israel for the help in building this.
You will require the following to make it work:
2.Phonon pytq4 libs (get that with synaptic package manager)
3.avconv command line tool (type yum install avconv (fedora/red hat) or apt-get install avconv (debian/ubuntu) in terminal)
If you explore avconv docs with $man avconv you can explore ways to further customize this script. i only needed it to make mp4 files, but you can make it do several other video and audio files types such as mov, wmv, mpeg2, etc etc.