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Yep thats the way to do it...
Find out what speed you want to do the slow motion by doing some tests. I'd recommend 33%-50% slowmo (any slower and you really should use a varicam or highspeed camera or your video will appear choppy) For 33.33% slowmo you need to record a Soundtrack at 300% speed For 50% slowmo you need to record a Soundtrack at 200% speed TIPS: Make sure you make a click track "lead in" (like a metronome) before you speed up the soundtrack (I'd recommend 10 clicks at 1 second intervals). This means you can take the slomo footage then line up the video from the audible cues to the Normal speed soundtrack. Note - Make sure you mark the slate/clapper correctly for the speed and also record the Audio from the shoot including the sped up Cues! Have fun - its mad to see bands singing like Alvin and the chipmunks!!! You can also do this in reverse of course - with action sped up - its harder for the bands as their actions need to be really slow & smooth or you get that Stop-motion effect Let us know how it turns out! Ben Post Edited (12-20-05 06:15) For instant answers to more than one hundred common FCP questions, check out the LAFCPUG FAQ Wiki here : [www.lafcpug.org]
I haven't seen the video you are talking about but I did something similar the other day where I wanted to make the subject slower and show like a trail....so I applied the Strobe Disolve filter and adjusted it a little bit....it might not be what 100% what you want, but this effect makes the subject (in this case a talking head) appear slower than normal time and the audio will stay inSync
Arod -
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