Lately I started subtitling movies I created. and actually I ran into problems
The situation is simple on both PAL and NSTC movies.

I have a DVD that needs to contain the movie, menus and subtitles.
The movies are exceeding the DVD-R space, so I started shrinking the movies with DVD shrink or DVD2one. The smaller movies plays fine on both PC and sandalone dvdplayer. Afterwards I demultiplex the stream (audio - video) and add the subtitle streams (eg. using IFOedit) Works fine too. But the result gets jerky on the standalone player.

So I started experimenting with original commercial DVDs (eg. the full 7Gb) As long as I do all the operations (demuxing subtitleing and remuxing) on the full movies (not shrunken) the result is perfect. But as soon as I start the process on a shrunken DVD it fails in the same way.

Using DVD maestro at a friends place, we realized DVD maestro complains about the fact that some I-frames are missing (can be noticed when importing the chapterlist).

I don't know who to blame: the demuxing tool or the compressors.

I use VOBedit to demultiplex my streams.
Now my question.

Is there any way to prevent any of these compressing tools from dropping frames? Or is there any demuxing tool that can be prevented from dropping the frames (or the indexes to the frames)

vobR