Interlace Flicker?!! Help!

chewbonkay wrote on 5/5/2002, 7:49 AM
This is a new one to me. I am editing a 2 camera wedding video and have applied color curves to correct for some near burn-out (from camera 2) of the bride due to a bright spotlight.

I use the 2nd camera sparingly but I do dissolve back and forth from time to time. I have applied the "clamp" filter to the preview window and have rendered to .avi.

Upon reviewing of the rendered file I am seeing flashing colors during the transitions between cameras (and in a few cases even after the transition has completed!). The colors look like "Out of Range" colors (produced by the clamp filter invert option), and are flashing in the brightest parts of the color corrected clips.

I have attempted to fix this (with my limited knowledge) in every way I can think of. I have done the following:

1. "Resample" all events in custom render
2. Selected "Interleave every frame" in custom render
3. Select "Reduce Interlace Flicker" and "resample" at the clip level
4. Removed Clamp Filter from preview window

I have done each of these independently and in combination.

While some results are better than others (reducing interlace flicker seems to be the best), I can't seem to correct this.

Please help!

PS. While I have nowhere to post the 14MB .avi, if anyone who is feeling extremely helpful wants or needs to take a look at the clip I'd be happy to email a .wmv file (647K).

Comments

SonyDennis wrote on 5/11/2002, 6:50 PM
Are you sure it's interlace flicker? Interlace flicker is at 60Hz. I've seen an occasional "pop" going into or out of a transition when "too hot" video is used. This is because the "too hot" clip might be passed through directly (since no filters are used) up to the transition, and then the transtion causes rendering, and the YUV->RGB->YUV conversion causes the hot parts to be clipped. At the edge of the transition, you'll see a "pop". I've only seen this once, with version 3.0.
///d@