Weird flashes when clips are cross faded

JR802 wrote on 5/1/2003, 10:16 AM
Can anyone shed some light on why I would see a flash or luminance change when two clips intersect/overlap each other with a linear cross fade? This seems to happen even when the two clips are on separate track with equal length linear fades.

One last thing it's not just a preview thing because it happens when I render as well.

Thanks, JR802

Comments

stevengotts wrote on 5/1/2003, 2:54 PM
I too have noticed this a lot. at least 4 to five incidents per music video. is their a way I can elimnate this before its broadcast?
thanks
stevengotts wrote on 5/1/2003, 2:54 PM
I too have noticed this a lot. at least 4 to five incidents per music video. is their a way I can elimnate this before its broadcast?
thanks
stevengotts wrote on 5/1/2003, 2:55 PM
I too have noticed this a lot. at least 4 to five incidents per music video. is their a way I can elimnate this before its broadcast?
thanks
SonyEPM wrote on 5/1/2003, 4:09 PM
How exactly can we repro this?
bcgreen wrote on 5/1/2003, 5:01 PM
Hmmm...I've never had this problem...what effects (if any) are applied to the clips you are dissolving to/from?

Bryan
philfort wrote on 5/1/2003, 5:22 PM
I've had problems (version 4.0b) where one of the clips in a crossfade started off too dark. The "fade lines" on the timeline looked different too, but I can't remember exactly how. To fix it, I just moved one clip off the other, and then back on - problem went away. I don't recall the exact steps that led to it, but it's happened a number of times in the past few weeks.

If it happens again, I'll save the .veg file in that state, and try to figure out what I did to have that happen...
randy-stewart wrote on 5/1/2003, 9:01 PM
I have encountered the same problem, a one frame flash as the beginning of the transition, when I use 3D transitions (in Vegas 4.0b) in slide shows and render to .avi with the field order set to none. It does not occur with the same .veg file rendered to Windows Media Video 9 format at 512kb. I changed the field order setting to lower (default) and re-rendered to the .avi format and that seems to have fixed the problem. Hope this helps.
Randy
JR802 wrote on 5/1/2003, 9:59 PM
Well it seems that I'm not crazy after all. SonicEPM all I can say is that when I do a cross fade between two different clips it seems to flash, sometime turn dark as menioned in someone else's post. It doesn't do it in all my transitions, but certain ones. I will try philfort's suggestion of moving the overlapping clip and then back again and see if that fixes the issue.

Thanks, all!

JR802
stevengotts wrote on 5/2/2003, 1:19 PM
Im thinking maybe the feild order clash could be the cause and I noticed when I print to Dv the problem goes away. I shoot in the cannon gl1 frame mode then try to dissolve into a 29.97, anyway it all straightens out printing to dv so Im happy. thanks all for your help.