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iMovie only generates video at specific resolutions. It's intended for simple use-cases, and so has a really cut-down feature set for video editing to make it harder for novice users to make mistakes. Unfortunately this means it often doesn't do what you want. If you're only clipping the start/end of your video, you can just use Quicktime alone to achieve ...


Your thread gave me an idea. I created a scoreboard in keynote and then used screencast (search it) to record the slideshow, and then edited it in imovie. Comment back if you'd like to see


You have inadvertently wandered into the murky realm of video codecs. The screen recording you made with Quicktime was initially saved using the extremely efficient H.264 compression algorithm. H.264 is a codec optimised for distribution of video. It is designed to store video using the least possible amount of data at the cost of using a lot of CPU time ...


iMovie imports into events, which are stored wherever you have chosen. Once you've imported the media, you can right-click on an event and select Reveal in Finder to reveal its location and either move/copy the event or move/copy the media within.


I'm looking for an answer that uses just iMovie or QuickTime editing feature but until there is an alternative provided, I will post this answer using the free VideoPad app (https://itunes.apple.com/us/app/videopad-video-editor-free/id846931335). VideoPad has a Position Video Effect that allows me to slide the video to the right (the left area is filled in ...


I believe you can delete them, but to make sure, you can drag them to the desktop, open iMovie and see if it works. If it works, you can delete the files.


You could try AppTamer (not free, trial version available). From the AppTamer website: Some applications, particularly web browsers and older apps, continue running tasks or animating ads even when they're idle. That uses valuable processing (CPU) power, which leaves you with: Less CPU power for the application you're using, Increased heat and ...

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