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The professional way Professionally done, all cameras and audio recorders will have a running (SMPTE) time code, which can be configured in 'free run' mode - meaning the time counter runs regardless whether we record or not (ie, STOP mode). At the beginning of the shooting day, all recordists (cameras, audio) will sync their clocks. This is done either to ...


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Using one of these solutions will be more efficient. That's what you've asked for. It saves you time, because there's no more need to manually sync the presentation and the voiceover. Free Solution Keynote can record a running presentation with the mic-audio. QuickTime X has also a screenrecord-feature incl. audio. Low Cost Solution Specialized ...


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You are looking for a Non-Linear Video Editing packages or NLE. Premiere and Final Cut Pro are two of the most popular, but they are also relatively pricy professional products. There are also many cheaper and/or free options available such as Windows Movie Maker (Windows) or iMovie (Mac). If you search for non-linear editing software or video editing ...


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Yes. The companies Spatz-Tech, HDFury and Faroudja have products with that functionality in their portfolio. But there are selling restrictions in many countries.


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Haha! In movies about movies you always see this clap in the beginning of a shot. The one where the take number and everything is written on with chalk. And they hold it in front of the cam and make one loud clapping noise with it. Well, if you have ever wondered what this ritual is for, congrats! You have found the problem to the solution ;-)) You get a ...


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Regarding @rich's suggestion... if you don't have Quicktime, will iMovie work instead? Or some other program? Create your Keynote presentation. Record your speaking part (separately) with an audio recording program. I recommend Audacity. It's a great free application. You can download Audacity from www.sorceforge.com among other places. You'll also want to ...


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A clapper is the easy approach for your budget since it will provide a synced audio/video event that can be heard on the audio and seen on the video. The main problem you might run in to however is that many cellphone video cameras are not fixed frame rate. If they do not capture with a reliable and accurate timecode then syncing up after the fact will ...


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As @DoktorHauser mentioned. Using one of the tools he mentioned would actually solve your problem. I don't really understand why you recorded your voice separately, if the point was to bring the video together with the audio. In that case it would have been much easier to record the audio with the video. (ScreenFlow, Camtasia and any of the tools mentioned ...


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I have no idea if this is optimal for you, but one approach using free software would be to first determine the percentage (and direction) of drift by finding a point near the end where you can tell with some precision what the sync error is, in frames. Demux the video and audio into separate streams, using a free tool like AVI-Mux. Load the audio into ...


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There is a plugin called vocalign that will do this. It is designed mainly for aligning vocal overdub and replacment dialog but it should work for what you are doing. You can use it as a VST in audacity. It isn't cheap but, if my memory serves me correct, it has a fully functioning demo. http://www.synchroarts.com/index.php?PAGEID=products&ID=vocalign


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Assuming you don't need great quality and are ok with ip camera quality footage (which it sounds like you are), you could pick up several wireless ip security cameras and connect them via WiFi on the same network as a Mac laptop running Security Spy.


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Use mkvmerge with -y or --sync Synchronize, adjust the track's timecodes with the id TID by 'd' ms. 'o/p': Adjust the timecodes by multiplying with 'o/p' to fix linear drifts. 'p' defaults to 1 if omitted. Both 'o' and 'p' can be ...



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