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Keylight
Hi.
This is my first post as I’ve just started using After Effects Pro, so please be patient as I am a newbie.
I’ve shot some bluescreen footage, which came out really well I thought. I used the keyight plug in to do this.
I’m editing the shots into my showreel, but I wanted to show the shot in two stages.
As the elements where shot individually and re-scaled etc… I decided to begin with a shot of just the actors, then I put in a blue jpeg image behind them, to make it look like I have a nice large, and well lit bluescreen.
In the preview window, against the blue background it looks perfect, but when I render it as an avi it looks disastrous, like interlacing. I’ve tried various settings and I can’t get this to look how it does in the preview window.
When I render the completed shot with all of the elements it looks perfect.
Under project settings it says it’s in NTSC drop frame and it won’t let me change this, colour depth is 8 bits per channel. The footage was shot using a PAL Sony FX1, downconverted to to DV (but shot in HD).
Under composition settings it says PAL/D1 Widescreen, so is there a conflict here ? and how do I change this ?
Again, it looks perfect when everything is keyed in, and against the blue (jpeg) backdrop) it also looks perfect in the project window (in After Effects), it’s just that when I render to AVI it becomes messy.
Thanks for you time.
Steven.
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8 Replies
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Hmmm, I think I just found a solution.
I changed the background image to a bmp instead of a jpeg, and it’s made a heck of a difference. Is that all I was doing wrong then ?
Cheers.
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I’ve been a scatter brain today, what I did (as mentioned in my previous post) didn’t work.
The avi file plays in Windows media player fine, the file of the actors against the blue background. It’s when I import the footage into Premiere and render it as an avi file again, that the problems occur. This is the only shot that won’t render correctly. What am I doing wrong ?
Please help.
Cheers.
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When I am rendering the avi in premiere I am rendering it out to DV AVI format. Still no luck.
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In the interpret footage dialog how is this footage beeing seen?
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Thanks Brian.
What is interpret footage dialogue ?
This is really doing my head in. It plays perfectly as an avi in windows media player, it also plays perfectly in the adobe premiere preview window.
When I render it as a DV AVI it comes out looking awfull.
Would it help if I posted some stills ?
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Well it’s down to this.
If I render the file as an AVI, wether interlaced or de-interlaced, it’s fine.
If I render the file as a DV AVI, wether interlaced or de-interlaced, it’s a mess.
I still want to know how to fix this though.
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Workaround:
1) render as uncompressed AVI
2) import that and re-render as DV AVI. Or compress that AVI in another app.When you import the uncopmpressed video, make sure it is interpreted (check the help on “interpretation”) with no field separation and rendered with no fields. That will assure that the fields are unchanged as the video passes through this type of process.
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Thanks Steve,
I’ve tried the interpretation method, and I am still coming up with the same results.
This is really strange, as the finished shot works well. The distortions that occur, (with the blue background)are around the characters/actor edges.
I keyed in a green background to see if it made any difference, and the distortions are less noticable with this colour. I then keyed in a random jpeg image from my hard drive, which consisted of orange tones, and this worked fine too.
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