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Typorama: I mostly just use this to create Youtube video thumbnails, but it's also useful for still interstitials.VideoGrade: Though I wish it could interlink with LumaFusion and iMovie, VideoGrade is still invaluable for more advanced color correction of clips (or portions of them).Though its UI leaves a lot to be desired and it occasionally runs into app-stopping bugs, you can create incredibly advanced projects with its tools (which include color and image correction, keyframes, custom title cards, linked clips, and a whole lot more).
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LumaFusion: I can't say enough good things about this third-party video editing app's feature-set.iMovie: Apple's video editing software has been my go-to for snipping together video long before Clips or Instagram came to light, and while it has (many, many) flaws and limitations, it's still a solid app for cutting video and audio together quickly.
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