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assistance with chroma key: png images…
Hi there, I hope that this isn’t a repost and someone can assist! Before I start i might be useful to briefly describe the image I’m trying to achieve: i’ve got a fixed shot of half beech and half sea, for about 15min. Over the duration of the film the tide comes in and fills the entire shot. What I’m trying to do is to have some text in the bottom half (beech half) of the shot that dissolves or gets washed away as the tide comes in over it (i’m not expecting miracles here and a very rough dissolve is fine…).
My initial thought was to import the text as a png without a background, then key chroma it with the colour of the sea so that it dissolves on contact. It starts off well initially, with the png having a transparent background but when I try and key chroma it, it creates its own background…
Can anyone assist?! Am I completely on the wrong track and there’s another way? Any assistance would be gratefully received.
Cheers, Ross
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2 Replies
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Try using an 8 point garbage matte whose points move with the wave coming in… a quick down and dirty rotoscope. Shouldn’t take that long, and might even work to just copy this moving matte for each title once it’s created for the first. Might not even need much adjustment.
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
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https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.
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Hi Jerry
Thank you so much for this info – it’s worked a treat! And just when I was losing hope and my mind…
Thanks again – Ross
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