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Understanding Video File Types: Codecs, Containers, and Outputs

TechSmith Camtasia

MP4 works well for videos posted on YouTube, Facebook, Twitter, and Instagram. FLV, F4V, and SWF are flash video formats designed for Flash Player, but they’re commonly used to stream video on YouTube. Flash is not supported by iOS devices. MOV (QuickTime Movie) stores high-quality video, audio, and effects.

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