A slight jerking problem

[Smudge249]

Have converted a dvd using
ClanDVD 2.0
DVD2AVI 1.76
TMPGenc 1.2j
Using the PAL VCD Template in TMPGenc.

Picture/Sound etc is excellent but every now and then the film jerks, only very slightly and everything keeps on running fine. Its not really a problem but I am just a bit confused as I cant work out why it is doing it.

Any ideas?

[VideoGuy]

You didnt specify if it was viewed on the CPU or settop player... If its settop player, maybe the MPEG decoding of the player not decoding the MPEG as it "should". Ive seen it before, sometimes its better to spend a few extra bux for a DVD player that supports VCD, and not just getting the cheapest one that does.

Mine is Sanyo DWM-360, just FYI.

Good luck!

[Da Fish]

I experience what I suspect is the same "jerk" every now and then. I am new to all this but when I create my VCDs I find every now and then, sometimes every 20 seconds there is a jerk or skip in the video. This jerk is like a pause in the video of maybe a couple of frames, the audio does not seem to be affected. If I play the MPEG file with Media Player it plays smoothly with no hicups, however if the same MPEG file is used to create a VCD with iether NERO or CD Creator I experience these jerks. I have tried capturing with different programs but all my encoding has been done with TMPGEnc12a to the PAL VideoCD Template. This problem is evident even with clean captures with zero frame drop, regardless of capture resolution. I have tried extracting the MPEG file from my VCD data file, if I play this MPEG file it runs smoothly, only causing problems in VCD format.

Any ideas anyone??????

[nightstalker]

I get the same prob with DivX Movies done with flaskMpeg, no matter what playa i watch it in
HELP!!!!!

[Dhruv]

I used to have the same problem, but I realised i got it because I was converting NTSC to PAL so I just converted NTSC to NTSC (make sure your player supports it) and then it ran fine. I hope this helps you,
Dhruv

[Smudge249]

I am playing the VCD's on a CyberHome ADL 528 machine which supports VCD so thought it should be ok on that.

[busch]

I'm also getting this problem on my portable VCD player, after making fully standard VCD's with TMPGEnc 2.0. They play 100% perfectly on my PC (very good quality) but have terrible skipping and choppiness in places when played on the portable player. Some sections play smoothly for minutes at a time, others are continually bad, independant of motion/scene complexity. I've tried a few frame grabbers (all these come from DVD originally) and always have the same problem. When doing a full encode with DVDx I don't get this problem (a few small skips here and there, nothing terrible) but the quality is not as good as TMPGEnc, which is frustrating.

I had an idea that it might be something to do with the format of the VCD stream, making it hard for the player to keep up in some places since it is only a slow drive. I've tried demux'ing and re'muxing in bbmpeg, with exactly the same results. One thing I have noticed - when creating the images with VCDImager, it needs to pad the audio tracks to fill the sectors properly - I'm not sure if this is a problem though, or just normal behaviour.

I'm not doing any NTSC/PAL conversions - everything is PAL in, PAL out, no non-standard settings anywhere. I've left all the settings in TMPGEnc to their default PAL/VCD values - should I perhaps try changing the GOP and/or multiplex values in some way?

Any help would be much appreciated.

Andrew