SWF (Small Web Format/ShockWave Format) is a digital Adobe flash file format that stores vector-based animations, audios, and videos. Generally, it is used to stream media online, mostly browser-based games. Sadly, Adobe recently announced that they are ending Flash format support by the end of 2020 due to its shortcomings such as performance issues and lack of security.
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Although not a format itself, Facebook has some technical requirements regarding the type of audio/video format it supports. While most file formats are supported, it’s best to use either MP4 or MOV. Also, the video compression codec should be in H.264 with AAC sound compression at 128kbps+. You can convert any video file type to Facebook using programs such as Wondershare UniConverter, VLC Media Player, Aiseesoft Video Converter Ultimate, and more.
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