Mpeg2 capture all weird??

[jarvizo]

I have a pentium 3 HP computer with 320 megs of RAM & an Avertv Stereo card. I've been in the process of capturing various clips from VHS tapes, all in various degrees of age, tape speed, & original sources. All capturing done in Mpeg2 realtime with MGI Videowave. All clips so far have been good except for one clip in particular. The tape plays fine but the capture itself has some weird things going on which i've never seen before. The file plays OK for the first 10 seconds or so, then the video will be in slow motion for about 2 to 3 seconds, no change in the audio ,however, causing major sync issues. then a few seconds later the video will speed up then both audio & video are back in sync until a few seconds later the whole process is repeated throughout the rest of the clip.
The capture had no frames dropped, but I can't preview the file duriong capture, so I can't tell what's going on there. other clips from the same tape have captured fine. The VCR i'm using is a JVC if that helps.
I tried re-encoding the file but the same issues are present in the re-encoded file. De-multiplexing had no effect either.

[Capmaster]

It sounds like the tape has some damage at the edge. That's where the timing info is recorded. If you can get access to a TBC try that to clean it up.

[SatStorm]

If you can't use TBC, you have to capture this video analogue, filter it the old traditional way (Virtualdub) and then encode it to mpeg 2