out of sync due to "poor flowing" video

[BinyaminGavriel]

On a couple of movies I've ripped, I have gotten to the stage of adding audio, only to find that my final movie is out of sync. Essentially, the video and audio start at the same time, but the video pauses every so often for a fraction of a second, while the audio continues, resulting in amovie that gets more and more out of sync as it progresses, with closing credit music playing about 20 minutes early. Oh, and of course before checking I deleted all of the VOB files.
The latest attempt was the Scorpion King, using SmartRipper, DVD2AVI, VFAPI codec, and Nandub for video encoding, and VOB2Audio for audio extraction, then added a wav header. The video was encoded at 720x480 (null transform filter), wth a bitrate about 2000 (2CD rip). I'm not sure how to send a copy of the logs of the whole operation, I'd appreciate if someone could tell me for the future. One thing to note, is that while most of my rips take about 6-10 hrs per pass, this took twice as long. Any explanations? (this is my first time using this resolution and the null transform filter - usually I use 640x352 and resize filter to crop the black bars).
My hardware: P3 600 (laptop) Win98SE, external 40GB HDD (via PCMCIA), 256 RAM.
Thanks

[DJ Bobo]

this is a playback problem, your machine is not capable of treating such a high resolution.

1) reduce post processing level
2) stop that non-sense with 720x480. Nobody rips in DVD resolution. You've got to resize down to 640x... or lower.
For your processor, 512x384 is ideal for 4:3 shows, 576x320 ideal for 16:9 shows, and 640x272 is ideal for 2,35:1 movies.
Always crop and resize down while respecting the aspect ratio!

[BinyaminGavriel]

OK, so does the fact that it's a playback problem mean that if I burned the file and played it on another computer I would be OK, or are there problems in merging the audio and video?
Also, it seems that on the couple of movies where I've had this problem, there were certain locations that had this problem, i.e., problem spot in movie did not vary by viewing, player choice, or location of file (internal vs. external HDD).
BTW, typically my movies are done at 640x352, bitrate around 1000-1200, and with the majority this has not been an issue. I accept how this may have been the issue in this case(although I don't fully understand it), but why should the other movies have this problem?

[hakko504]

more bits and pixels, meaning more stress to the CPU - and that CPU is in the lower end of what can be called acceptable for DivX playback. BTW, you don't say if the problem appers when you have external power or not, most laptop-CPU's reduce clock frequency when they run from batteries. Also note that playing back video in a non-resized window will give you better playback, compared to resizing to fullscreen.