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ffmpeg-wasi

The engine behind afmpeg, and, despite the name, not really FFmpeg at all: a custom, direct interface built straight over the libav* libraries that just masquerades as FFmpeg. It does away with the ffmpeg CLI entirely, so tools hook into one consistent programmatic layer instead of stitching together brittle argument strings. It provides both the WASM backend afmpeg runs by default and the native backend it reaches for when a performance edge case calls for it.