Video "Tear" problem on render.

TheHappyFriar wrote on 10/1/2003, 8:01 AM
Howdy.

I captured lots of footage from VHS to make some short videos. I started putting my clips together and in an effort to save time, every once in a while (about 1 minute worth of edited video), I would render the completed section to a new track (I re-opened my project in another Vegas instance so i could render and work on the same project at the same time). Then when I went to render to mpeg-2 as the final, it wouildn't take time to process the FX.

Anyway, after I rendered to mpeg-2 and played it on the DVD player, i noticed some of the footage had "tears." It looked like the screen was divided up into 10 vertical segments, and 5 of those lagged behind the rest of the frame. I checked my origional footage. Didn't do this. I checked my "time saving" new tracks. They had the "tear." I re-checked my origional fotage. The only difference between clips that "teared" and didn't was that "Reduce Inerlace Flicker" checked on the non-"tear" clips, and not on other clips.

Does anyone know why I get these "tears?" It's not on every video i render, just some.

Thanks!

Comments

Finster wrote on 10/1/2003, 8:46 AM
I would bet that the video that "tears" has more motion in it than the video that doesn't. I've seen similar artifacts on .avi files when printing to tape. The solution, as you point out, is to check "reduce interlace flicker."
TheHappyFriar wrote on 10/1/2003, 9:55 AM
Is there a way to apply "reduce interlace flicker" to the entire project? It's a pain to right click and do "reduce interlace flicker" on all the events (and there was a lot).
jetdv wrote on 10/1/2003, 10:02 AM
Is there a way to apply "reduce interlace flicker" to the entire project? It's a pain to right click and do "reduce interlace flicker" on all the events (and there was a lot).

Kind of. Select the first video event on a track, righ-click and choose Select Events to End. Then apply the "reduce interlace flicker" option. Now repeat for all remaining video tracks.

If you wish to do them all at ONE time, use Tsunami to pick the events from selected tracks and pick all of the video tracks before running the Select Events tool.
TheHappyFriar wrote on 10/1/2003, 10:45 AM
Thanks jet, I forgot about the "switches" menu option! :)
craftech wrote on 10/1/2003, 6:28 PM
Be advised that "Reduce Interlace Flicker" will introduce motion blur especially on pans with indoor or stage lighting.

John