Exporting Video From Avid
by Adam Hickson
on
Jun 3, 2008 at 8:01:10 pm
Can anyone tell me how best to export 720 X 486 Video from Avid as a .mov file? I am doing it and getting fielding interpolation jitter on pans and other various video movement.
Re: Exporting Video From Avid by Adam Hickson on Jun 4, 2008 at 1:47:16 pm
I'm seeing artifacts on both my LCD computer monitor and LCD NTSC monitor. The interpolation problem is associated with any movement (i.e.) zooms, pans, position changes etc.
Update:
I tried Compressing H.264 and that worked to remove the artifacting, however, my audio is cutting in and out and popping. The sound settings were uncompressed, 44.1kHz and 16 sample size.
Re: Exporting Video From Avid by Joseph W. Bourke on Jun 4, 2008 at 2:02:42 pm
Adam -
I've run into essentially the same problem, but it had to do with mixing 720 x 486 files with 720 x 480, which is what our AVID Newscutter and our Thunder playback system require. When you put a 720 x 486 file into a 720 x 480 project, you cut three pixels from top and bottom. This essentially inverts the field order and causes nasty jitter/field hash.
I'm under the impression that the DVD mpeg-2 standard requires 720 x 480, not 720 x 486. There may be a problem somewhere in there that's causing your field issues. Since I don't know what AVID you're working with, I don't know what its' native output is, but I do believe that there must still be an interim codec rendered (maybe using Squeeze? That's what we use.) to get a DVD friendly format. Uncompressed will not give you a DVD that will play back, as far as I know. Good luck.
Re: Exporting Video From Avid by Michael Hancock on Jun 4, 2008 at 6:20:44 pm
DVDs are mpeg files at 720x480.
If you have a mix of DV and uncompressed footage (which is 720x486) you should do a mixdown. I always mixdown my video and graphics to DV50. It holds up really well and I can export with the Use Avid DV Codec option. Plus all the footage and graphics will then be 720x480, which solves the interlacing issues.
You can also mixdown to 1:1, but I don't usually bother since it takes up so much more space, and by the time it hits the DVD--I can't really tell the difference.
So mixdown all your video, then export. It should solve the field issues.
Re: Exporting Video From Avid by Kenneth Kirkpatrick on Jun 5, 2008 at 6:51:26 pm
What happens when you mix 720/480 with 720/486? I've posted about this, but didn't get a good answer. I've had this same problem, with stuff from DV being sent out to me at 720/486, with either a black bar at the bottom or the fields blurred when expanded. I am a graphic artist, and I do post effects on quicktimes our editor sends out to me.
How do you keep your Avid edit at 720/480? I keep rendering my graphics at 720/486 because DV won't render with an embedded alpha. Does adding footage of 720/486 force an edit to become that size?
