Random jump in video levels upon rendering comp

	Random jump in video levels upon rendering comp by adam taylor on Apr 30, 2008 at 12:26:51 pm I'm having a really odd problem with my current project. I am doing a simple rotoscoped wipe using an animated mask to reveal a change of clothes for a character. There are two shots that make up the second clothes set and so i have precomped these. I'm working with pal widescreen 10bit uncompressed footage, and rendering back out to the same format. When i play back directly on the timeline the effect works perfectly. As soon as i render it (or do a Ram preview) i get several frames into the clip and the video levels leap by 5-10% (according to my scope). I have rendered this almost a dozen times now, and the frame when the leap occurs appears to be random. I have checked every clip and they all seem normal. I have no filters or keyframes or anything i can think of that could cause such a leap. In fact, all i have are the pre-comp and one other video track with a single feathered mask to do the wipe with. Any suggestions of things to try? I have already rebooted the mac, and used macjanitor to clean out its cache etc. thanks Adam Taylor Video Editor/Audio Mixer/ Compositor/Motion GFX/Barista Character Options Ltd Oldham, UK Respond to this post   •   Return to posts index

	Re: Random jump in video levels upon rendering comp by adam taylor on May 2, 2008 at 12:37:02 pm hi joey, tried all those things and no luck. I even tried starting a new project from scratch but it still did it. In the end i got round it by making the run up to the bit i needed longer, so i could edit the jump later, and also re-correct the levels in color grading app later. Its quite worrying because i think i just saw it happen on a completely different project...but i could have just blinked whilst watching the render!! adam Adam Taylor Video Editor/Audio Mixer/ Compositor/Motion GFX/Barista Character Options Ltd Oldham, UK Respond to this post   •   Return to posts index