Most of the times, the glitches are at random places in the video from file format to file format and render to render. Also, sometimes they even lessen in intensity if they are replayed. This said, sometimes, from time to time, they do duplicate themselves in the same spot.

It seems your problem is your media player or graphics driver, not Vegas. Please replay these files on another PC, or upload somewhere one of these files, so we can try them too and see if the problem is your PC itself or not.

Actually, I've already done that and the glitches still remain. If you'd like to take a look, I've put something online and you can see an example of what I'm talking about. Go to : luckybutterflyproductions.com. Enter and go to TV on top. Scroll to bottom of TV and you'll see in red, "Projects in Development". Hit that and enter "Doctor" in Username and "Fertility" in Password. If you watch the video, (it's only about 7 and a half minutes) you'll see a few gitches starting towards the center and throughout. This was rendered on Vegas and output to AVI file, converted to SWF and uploaded.

Thanks for all your help and look forward to hearing from you.

I just checked that video and I see NO glitches whatsoever. Everything looks normal here. If you see very visible problems, then the problem is with your PC.

That's odd. I just watched it on my pc and on my mac and see at least three large green glitches a little after the middle of the video. One is over the Doctor's mother speaking, another is a little later on the Doctor, and then there's other assorted black frames after that.

I've also just re-rendered, and there's more glitches than ever in the new render on the timeline. I have no clue what's up with this.

You should post exactly what the source files are, where they originated from, how you captured or transferred them into your computer & if your mixing different formats.
I don't see where you have posted the properties of the source videos that are giving your problems.
Did you shoot this using a DV cam or picture cam in video mode?

out of interest - what are the specs of your machine - powerful is not very helpful and subject to opinion.

Didn't have the patience to watch the entire clip (too long), but I didn't see any glitches. You should post the exact time into the clip that the glitch occurs for you, and make the video avialable in a media player that allows one to scrub to that exact time location (which is not the case with your current web page).

If you want to debug on your end, you should render clips that aren't your own, e.g. sample/tutorial clips and see if you notice any glitches in that. Render those out to DVD if you see glitches on the PC/Mac and view it on a DVD player instead. If there's nothing wrong with the DVD version, then it's certainly your computer to blame.

Good luck.

The source files were transfered directly from a Sony HDR-SR7 Camcorder and is AVCHD video. It was transfered directly from the cradle that came with the camera into the Sony Browser and then imported into Vegas 8. When I play the original clips in the Sony Browser and the imported material in Vegas, there are absolutely no glitches at all.

I have mixed some formats in this piece - the Sony AVCHD video is mixed with YouTube downloaded clips, but it doesn't seem as if the problem glitches are in these areas. I also have some overlayed video on another track, and it does seem like these areas where the video is overlayed may be affected, but hard to tell.

Here are the specs of my computer:

Windows Vista Home Premium (build 6000)

HP-Pavilion GN551AA-ABA m8200n
System Serial Number: CNX7351L4Q
Enclosure Type: Desktop

3.00 gigahertz AMD Athlon 64 X2 Dual Core
256 kilobyte primary memory cache
2048 kilobyte secondary memory cache

HP-Pavilion GN551AA-ABA m8200n
System Serial Number: CNX7351L4Q
Enclosure Type: Desktop

3070 Megabytes Installed Memory

Slot 'A0' has 512 MB
Slot 'A2' has 512 MB
Slot 'A4' has 1024 MB
Slot 'A6' has 1024 MB

Board: ECS Nettle2 1.0
Bus Clock: 201 megahertz
BIOS: Phoenix Technologies, LTD 5.16 08/14/2007

c: (NTFS on drive 0) 490.57 GB 252.36 GB free
d: (NTFS on drive 0) 9.53 GB 918 MB free
k: (FAT32 on drive 8) 160.00 GB 105.30 GB free
l: (NTFS on drive 1) 300.07 GB 252.21 GB free
n: (FAT32 on drive 9) 299.99 GB 31.37 GB free
q: (FAT32 on drive 0) 319.99 GB 272.19 GB free
Network Drives

ATI Radeon HD 2600 PRO [Display adapter]
ViewSonic VA1912w-3 [Monitor] (19.1"vis, s/n QBN062901056, July 2006)

Hauppauge WinTV HVR-1800 (Model 78xxx, Combo ATSC/QAM)
High Definition Audio Device
Realtek High Definition Audio

There's a good chance that your graphics card or power supply is dying. Or your PCI slot is not good enough. At the very least, upgrade the graphics driver of your graphics card.

Anyways, as I said, get another PC and test your videos. We can't see anything wrong with your videos, so I am 99% sure that you have a HARDWARE problem with your PC (if that's not just a driver problem).

I saw 2 green glitches in the video about where you also saw them.
Because the source files are avchd if it was me I would first insert them into the timeline and then immediately export the avchd videos to an editable format. Maybe cineform or equal but if your mixing these with other clips then what are the other clips video/audio attributes?
Standard DV-Type2 is probably the easiest to edit, avc/h264 is not a reliable codec to edit. It' uses extreme compression.

Yeah, definitely a glitch right after the halfway mark, after introducing the family. I'm thinking it's an internal computer problem, too.

I would just doublecheck the video on your timeline, in that area, frame by frame, to see if the glitch is there.

I just re-rendered and now have a whole new set of glitches along with some of the old ones.

The same glitches are on the timeline too in some cases, but not all the time when I render to another file format.

I recently upgraded my graphics card, so I'm guessing that's not the problem.