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1 pixel thick lines strobing
Hi guys
I’m producing a set of greenscreen presentations and have come across a problem.
One member of staff wanted to use live webpages in their presentation. We used screenflash to record a PC screen live as they gave their presentation, and then dropped that in behind them.
The problem comes when i came to output the video. It’s for DVD and for web video. The tiny text and 1-pixel table lines strobe when i outputted the video as a test using the basic MS DV codec. The thing took 7 hours to render, so i can’t keep trying different codecs.
Is there anything i can do with a duplicate of the screen capture and a transfer mode, that would soften the strobing?
FYI the screenflash recorded at it’s maximum, 10 fps.
Or will it not show up once the final DVD video is made?
Graham
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3 Replies
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Hi,
What I do is add just a little bit of gaussian blur.
Thanks
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General advice – avoid single pixel thick lines. Your video picture will be interlaced so the screen will be displaying alternating odd and even scan lines hence the strobing. Unavoidable problem – it’s the nature of the beast.
Either replace lines with 3 or 4 pixel wide lines or as the other poster suggested use a little vertical motion blur. Either way it wont look as good as it did on the original computer screen.
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Thanks for your help guys
Rerendering with a duplicate layer with a small blur and setting the transfer mode to lighten worked a treat.
Graham
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