Sometimes it is useful to collect some pictures from some different DVD’s to a new one. But what to do if the original pictures are deleted now. You can use the following command to extract the pictures first.
transcode -x mpeg2 -i VTS_01_1.VOB -y im -F jpg -w 100
-F jpg, png, gif ==> picture format (default jpg)
-w number ==> quality for jpeg and compression-level/quality for png (for example 95, see “man transcode”)
Now you can choose and delete some and collect new with the described procedure at dir2slideshow.