The first thing that's needs to be done when putting VCD or SVCD to DVD is to make just one big file.
VCD and SVCD come on two CD's or more, this is because the amount of data that can be stored on one CD is only 74,80mins on VCD or 50mins SVCD and most films are much longer. What you will have to do is merge both parts of the film. There are many programs to do this but I use tmpeg as the tool works quite well.

Step 1

Put your film into your CD drive and don't let it load up. Explore the CD if you are doing a VCD look in the mvpeg folder for the film data it will be a avidata file, or if you are doing a SVCD you will see a mpeg folder, and in there it will be a mpeg file. Copy the file to you PC hard drive, it will take a few minutes to do, OK now you have the first part on your PC. Put it into a folder and call it part 1 so you know what part of the film you have, do the same on the second part.

Step 2: Merging

Now you have both parts of the film you will have to merge them together. Open up tmpeg go to the tool section select merge add the first part of the film, then the second part you should see both, now select some place on your PC where it is go to be outputted (desktop is where I normally do it).
OK now hit run this will take some time to do.

Step 3: Changing the Sound

The sound frequency of the sound is wrong so its has to be changed from 41000 Hz to 48000 Hz, to do this you must now split the sound from the picture, so you will have to use tmpeg tools again.
Now go to the tool section and select simple de-multiplex select the output for the files and run, it now you should have the video and sound separated.

Step 4: Encoding the Sound

Now we have to encode the sound in tempge select start but at the bottom of the screen, make sure the audio is only selected go to setting on audio and change them to 48000 and birate 224 and press OK.

Now press start and let it encode this will take a while, when finished you will have a new sound file.
Now we have to merge the video and new sound file together, to do this you will need to use tools again and go to simple multiplex, just select the video file and the new sound file and select a output and run it, this will take some time, at the end of this process you will have a new mpeg file.

Step 5: Patching

You will need to patch the file now because the authorized program won't let you use it, so you need to use a program called DVD patcher. This is easy to use just browsers the file and patch it, this takes seconds.
OK now you can use the authorized program to make a DVD, this is the same process for divx.

 

DVD ripping