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#1 2003-01-22 1:25 pm
Help me prevent crumbly video/audio
I need to move DV from an xl1 and a SonyDVcam into Premiere then into After Effects then back into Premiere, then back to the camera. When I do this I get crumbly images, jaggies, scan lines, pixel crawl. Is there an easy to follow precedure to move through these iterations and end up with decent video?
And another thing sometimes the video encodes fine, but the audio has spits and pops in it. Sounds great straight from the camera, but going into the computer adds artifacts.
I have a stupidly close deadline and I'm getting frustrated. I need your help.
<BR>Raised by a television
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#2 2003-01-22 3:16 pm
- avkills
- demyelinated brain matter
- Registered: 2001-05-09
- Posts: 7103
Re: Help me prevent crumbly video/audio
Well in AfterEffects, you need to interpret the DV video as interlaced and using lower field first. You also need to render out as lower field first interlaced video. You might also have to add Level adjustments on each video clip since AE uses RGB colorspace. Do the opposite Level adjustment on the final render. For the media100, I use the following level adjustment for incoming clips:
input levels black=16 white=235
On the final render I do this
output levels black=16 white=235
This basically maps RGB colorspace to the 4:2:2 YUV colorspace the Media100 uses. This will make sure that RGB values of 255 will not go above 100 IRE.
Premiere IMO is not a very good program. If you have access to FCP, then I would use that instead. If you must use Premier, make sure you are capturing at 720x480, 48Khz Audio. I usually do not use AE for any audio, so I would keep that in Premiere and just use AE for the video portion. You can always bring the audio in for timing purposes.
-mark
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