Hello
A little tip to convert AVI files to DVD with embed subtitles.
Installing tovid:
sudo apt-get install tovid
Converting AVI file to a DVD-ISO file.
tovid -dvd -in Video.avi -subtitles Legenda.srt -out Video
/usr/share/tovid/makexml Video.mpg -out Video
export VIDEO_FORMAT=NTSC
/usr/share/tovid/makedvd Video.xml
mkisofs -dvd-video -udf -R -o Video.iso Video/
So, you just need to burn your ISO file. You can use Brasero.