i was trying to burn an encoded video, here is the command line output....

budluva@feisty:~$ tovidgui 
MPlayer 2:1.0~rc1-0ubuntu9 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) XP 2400+ (Family: 6, Model: 8, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing /media/hdb1/dmd-tenacious.avi.
AVI file format detected.
VIDEO:  [XVID]  592x320  12bpp  23.976 fps  865.8 kbps (105.7 kbyte/s)
Clip info:
 Software: VirtualDubMod 1.5.10.2 (build 2540/release)
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
Error opening/initializing the selected video_out (-vo) device.


Exiting... (Quit)
ERROR:
The following command returned an exit status of 1:
makedvd -quiet -author -burn -device /dev/dvdrw /media/hdb1/Untitled_disc.xml
Please report this bug on the tovid forum or IRC channel:
    Forum: http://www.createphpbb.com/phpbb/tovid.html
    IRC:   irc://irc.freenode.net/tovid
Include all the output shown above, as well as any output
shown in the log window of the tovid GUI.


also here is the output from the log window of tovidgui

The following commands will be run:
=========================================
makedvd -quiet -author -burn -device /dev/dvdrw /media/hdb1/Untitled_disc.xml
------------------------
Running command: makedvd -quiet -author -burn -device /dev/dvdrw /media/hdb1/Untitled_disc.xml
--------------------------------
makedvd
A script to create a DVD-Video file structure and burn it to DVD
Part of the tovid suite, version 0.30
http://www.tovid.org
--------------------------------
Authoring disc from file: /media/hdb1/Untitled_disc.xml
<!-- makexml 0.30 -->
=========================================================
Creating disc structure with the following command:
dvdauthor -x "/media/hdb1/Untitled_disc.xml"
=========================================================
DVDAuthor::dvdauthor, version 0.6.11.
Build options: gnugetopt magick iconv freetype
Send bugs to <dvdauthor-users@lists.sourceforge.net>

INFO: Locale=en_CA.UTF-8
INFO: Converting filenames to UTF-8
INFO: dvdauthor creating VTS
STAT: Picking VTS 01

STAT: Processing -noask...
ERR:  Error opening -noask: No such file or directory
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
makedvd encountered an error during the DVD creation process:
Could not create the DVD-Video disc structure in /media/hdb1/Untitled_disc. Leaving /media/hdb1/Untitled_disc for inspection.
See if anything in the above output helps you diagnose the
problem, and please file a bug report at tovid.org (_not_
the dvdauthor list) containing the above output.
Sorry for the inconvenience!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!