I've done several 2 movies to 1 DVDR with
DVD2One (movie only) using this method.
Transcode the first movie to folder1 and the second movie to folder2. In folder2, delete the VIDEO_TS files then rename remaining files to VTS_02_X.XXX. Move all the files to folder1. Now you have a folder with 2 movies but you have to modify the VIDEO_TS.IFO file to recognise the second movie.
1. Open VIDEO_TS.IFO with IFOedit.
2. Select VMG_VTS_ATRT 'Number of Video Title Sets' = 2
3. Select VMG_PTT-SRPT 'Number of Title play Maps' = 2
4. Refresh the page and enter the following for Title_2:
Title playback type = 20
Number of angles = 1
Number of chapters = XX
Title set number (VTS#) = 2
Title set Title-number (VTS_TTN) = 1
5. Select VMG_VTS_ATRT and enter the following:
VTS_2: Number of audio streems in Title (VTSTT_VOBS) = # of audio tracks
VTS_2: Number of sub-picture streams in Title (VTSTT_VOBS) = # of subtitles
6. Select the VMG Overview page and specify the audio tracks, and subtitles if any.
7. Click 'Save' then 'Get VTS sectors'.
The DVD will start with the first title. To select the second title, use the player remote.
Hope this helps.