Hi there. I've been reseaarching this issue for ages now and am hoping someone out there can help put the jigsaw pieces together.
The problem is burning a DVD. I can capture DV fine, the resultant AVI file I have looks great and plays beautifully. But, when I edit it and burn to DVD, the image playback is flickery / stuttery. When the camera shot pans at all, the image stutters/judders.
I've recently been watching Sky online through the same machine and have noticed the same issue occurs.
My specs are as follows:-
- AMD Athlon XP 2800+, MMX, 3DNow, 2.1GHz
- Windows XP Pro
- nvidia GeForce4 Ti 4800 SE with 128M RAM
- Up to date DirectX & nVidia drivers
- New Pioneer DVD-RW DVR-115D
- Full Defrag
- Separate drives for my burning (Nero) /editing (Ulead Visal Studio 10) software to the Video file.
What I have noticed is that when I'm watching Sky, the CPU is running VERY hot, @ 95%.
When I view Sky in full screen, the problem is twice as bad.
When I boot in safe mode and do the same, it runs at 80% and the stuttering is slightly improved.
My assumption is that my CPU is the bottleneck here and just can't process quick enough.
Can anyone help? Does my assumption sound correct and if so, is there an option for me other than to buy a new PC ?
Thanks Mark for your suggestions/help.
I've dug into them and have found:-
1. I can't find a setting on the TV for Progressive or Interlaced. Below are the specs for it however. I did discover that the refresh rate on my PC was set to 75Hz, not 60Hz as the TV recommends
2. You are right about deinterlacing. "Image Capture Deinterlace" is checked. I will uncheck this.
3. Yes, the interlaced field order was wrong, was set to "Upper Field First"
4. Not checked what format I'm shotting in, I've not changed any settings on the camcorder but will look into it.
However ...... having said all of that, watching Sky Online is still stuttery - the exact same problem I see when I burn a DVD.
I will change, re-capture then re-burn a copy to see what happens .... but d'you have any further thoughts ?
Hi Mark. Unfortunately the changes you suggest have made little or no difference.
The picture still judders/stutters from time to time. It's whenever the camera pans atall. It doesn't have to be a significant movement and it's not consistent either. Sometimes movement is smooth and other times not.
It's hard to give an example of when it looks jerky as it seems relatively random, but;-
- the clip I burned yesterday was shot in my loft. I've just moved in so it's a recording of how the place looks. When the image is just my face, everything is smooth and fine, but as I start to pan across the room, it then judders/jerks from time to time. The best way to describe is, it's as if the image freezes for a split second / 5 or 6 frames and then skips to where the video has moved on to, thus missing out those 5 or 6 frames.
However, when I first capture the video (using ULEAD or the native Panasonic tools) the AVI file is perfect. As in it plays perfectly through my PC (Windows Media Player) onto my monitor - no jerkiness atall. It does ocasionally occur but that's related to some temprorary bottleneck on the PC, if I rewind and play again, it always clears itself. Interestingly, I can 'hear' this bottleneck as it coincides almost always with the PC making PC noises, which I assume is the HD doing some reading/writing.
The big issue comes when I burn this AVI to DVD. When I play the burned disk back through the DVD on my PC, or through another to a TV, the jerkiness is there. It's consistent - the image jerks/freezes at the same points. It's as if this bottleneck has occured during the burning process and thus is now part of the DVD rcording itself.
Have been investigating this for months now - driving me totally nuts!
PS - yes I corrected the file order before I cut the DVD - it's now lower field first.
The jerkiness from the camera - you mean it plays jerky on the screen? Does it jerk exactly the same each time? What sort of camera is it? This is not normal.
The playing jerkiness in the pc - this is common and irritating but normal.
The DVD - Ususally dvds compile fine even when the PC is thrashing so my thinking is that this may be connected to the camera producing video data with glitches in it - but I am no way certain as I havent encountered this problem.
It may help to have details on the camera posted, and a clip of the jerk if poss.
What bit rate is the dvd cut at? - I have found that some dvd players choke with some home made dvds if the bit rate is high - near 10 - the max allowed.