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Banding on Webstream
Anyone have any ideas why my demo reel webstream has banding in some of the shots? It only happens in the motion graphics clips with quick movement. (Just after the opening name slate, about 20 seconds in.)
It shows up when viewing the .mov file on my desktop as well. It was made on FCP and compressed with Compressor using the H.264 800 Kbps Streaming setting. I have tried several different compression settings and have added compression markers in the problem spots, but that didn’t help. The original animation was made on Combustion and exported uncompressed as an .mov.
Is the problem in the compression? The .mov’s made with the MPEG-2 6.2 mbps 2pass 4:3 look just fine.https://homepage.mac.com/christopherdixon/iMovieTheater2.html
Any ideas would be appreciated.
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5 Replies
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looks to me, and i am not expert on here, its an interlacing issue…how to fix it, i’m not too sure.
perhaps try and render it out progressive?? non-interlaced?
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Thanks for the suggestion, Ben.
I tried exporting it out of compressor non-interlaced, and it looked pretty much the same.
Hmmm. I wonder if I need to go back to the original animation and re-render it de-interlaced, then drop it back into my edited sequence and re-export. Or maybe apply a de-interlace filter to the anim. in my FCP sequence? I’ll try both, but it’ll take some time. -
the bands look way to big for it to be a interlacing issue
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Are you using Compressor 2.0? I’ve seen similar issues with mpeg2 encoding and moving stills. Compressor 2.1 does not do this.
joe
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I’m using Compressor 2.1, Joe.
Actually it was an interlacing issue. I went back and re-rendered the original animation in Combustion without frames,
then imported it back into FCP and exported the same way as I did originally in Compressor and that cleared it up.Thanks for the help!
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