Jerky video

[Puggsley456]

I have a svcd that i converted from a dvd rip and the mpg file seems to have a bit of jerkyness to it that seems to get a little worse as the movie goes on. Its not that bad, everything is in sync but it just makes the fast moving portions of the film look kind of funny. When I encoded it I did everthing just as i was supposed to and I encoded the motion search precision on high quality. The source is of very good quality and does not have these problems. I have noticed that all movies compressed with the xvid codec seem to be a little jerky when they are converted, By the way the problem file uses the xvid codec.

[sunmiztres]

i don't know if this is your problem but usually jerky video is caused by encoding the wrong field. i don't know what program you used to encode but i would set it opposite of what you did and see if that solves the prob.
good luck

[Puggsley456]

How can you tell which field to encode? And how do you change it?

[Puggsley456]

Now i have tried converting a vcd with a different file and it has the same result. I tried different brands of cdrs and it still had the jerkyness. The converted mpg file doesnt have that problem when its played only the burnt vcd does. I tried the vcd on two different dvd players and my computer and it does the same thing on all of them. I use nero 5.5.9.0 to burn all of my cds. Could this be a problem with my burner? I am already on my second one in 6 months.(NEC 7900a)

[Puggsley456]

Any advise would be a great help to me because all of my vcds and svcds are now doing this!

[scrim]

CANT REALLY HELP ,BUT IVE FOUND THAT THE MPEG IS FINE, THE PROBLEMS HAPPEN ONCE BURNED THROUGH NERO ??

[Barnabas]

You don't mention what encoder you used, but you probably encoded with the wrong field order. If your picture looks fine EXCEPT when stuff is moving from left to right or right to left, your field order is wrong. TMPGenc will check for the correct field order if you use the wizard.

[hwoodwar]

At what speed did you burn the video to CD? In some cases, burn speed can cause this problem. If you aren't already I suggest you burn the CD at a slow speed, like 4x.

[kjmacke]

Did you encode at 23.976 film or 29.97 ntsc?????

[Puggsley456]

I encoded it with tmpg. I used the ntsc film template and I burnt it at 4x speed with nero. The first time I noticed the problem was on a vcd that the video seemed to have too speed up for short bursts in order to keep up with the audio. Now I seem to have a similsr problem with all of the files I encode. I have tried different movies, different settings and they all do the same thing.
Its just weired that when I play it in my pc it doesnt have these problems.

[ZippyUK]

Sounds to me like you've encoded the fields the wrong way round.

You can use a program such as bitrate viewer to see whether the upper field is first or not, then in encoders such as CCE you can specifiy 'upper field first'.

This should only affect TV playback also, as the PC does not display video in the same was as a TV.

[dwisniski]

In TMPGEnc, while your .avi or video file is loaded. go to the MPEG setting option, click on advanced, and double click on the deinterlace option. Then where it says 'Method', choose 'even-odd field (field)' This will let you preview your video to determine the correct field order, if the video is jerky looking in there, change the field order for the video. It should look smooth after that. Hope this helps