When I ripped a DVD using dvd::rip, the main title was split into several 1GB VOB files. How can I join them to make a single VOB file that contains the whole title?
The size of a .VOB container file is, by definition of the DVD specification, limited to 1 GByte (1048 MB).
ffmpeg -i snatch_1.vob -f avi -vcodec mpeg4 -b 800k -g 300 -bf 2 -acodec libmp3lame -ab 128k snatch.avi(from manpage)
Concatenating video files can only be done with some formats (e.g. MPEG).