If these VOBs form a DVD structure (VIDEO_TS directory, files with names such as VTS_01_1.VOB or something similar), you can run something likexine dvd:/path/to/your/dvd/structureIf not, then you could try to form a DVD structure, but the files have to contain the whole DVD, menus and everything. You may have only the video itself.
This works! Thank you, Eduardo! Before, I've tried open the VOB files directly. Cheers, Serge.