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Seeing double in PPro CS3
This one has me completely baffled. I have been using Autodesk Maya to render Targa files of an animation, and then importing them into After Effects as a sequence. From AE, I export a Quicktime movie with MPEG-4 compression for each “shot.” Then I take the shots and assemble them in Premiere Pro. This worked great until the other day.
All of a sudden, the new shots have started blurring. If I export a movie with the new shots, the blur is just slightly visible. If I open Premiere and scrub the timeline bar over one of the offending shots, there is clearly a kind of “ghost” image of one frame bleeding into the next. But not with every shot! I tried to address this by using a different compression method, but even the Animation codec, which is typically lossless, had the same problem. And what’s more, if you pause these MOVs in the Quicktime movie player, there is no ghost image.
They’ve all been rendered the same way, with all the work being done on PCs using Maya 2008 and Creative Suite 3. Can anyone think of why this may be happening?
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3 Replies
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You didn’t mention whether that happened on export.
Are you just seeing the auto quality playback ?
That sure sounds like it. Try setting the playback setting to high quality.
On a side note, you really should stick to Animation, not Mpeg4.
Vince Becquiot
Director | EditorKaptis Studios
San Francisco – Bay Area -
I’ve also learned that PNG compression on a video clip (not stills) works extremely well…and is smaller.
Obviously something has changed here… If you should find that Vince’s possibilities aren’t the case, I’d move next to interlacing or frameblending…
You didn’t say the ‘ghosts’ look like thin, intermingled lines, but when you say that the ‘ghosts’ disappear when you pause the playback, I tend to focus on interlacing as many playback environments drop to one field on pause…therefore your ‘ghosts’ would disappear.
If somewhere a switch did get flipped and now the renders or AE outputs are interlacing, the ‘ghosting’ could be caused by the field dominance (or order…I’m an old broadcast guy) getting reversed somewhere along the line.
Good luck with it. Let us know how you make out.
TimK,
Director, Consultant
Kolb Productions, -
My wife actually figured this one out. She right-clicked on the MOV files in the timeline and noted that “Frame Blending” was checked. Removing this took out the strange ghost image, which I guess was an attmept on the part of Premiere to smooth the transition from one frame to the next. Oddly, I have no memory of switching this feature on, so I don’t know how it became active. I am glad I know it exists, because I’ve had videos turn out like this before without knowing why. Thanks to you both for your invaluable assistance!
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