To build on your own, you can check build.sh inside repository.Īlso you can check this series of posts to learn more fundamental concepts: In fact, it is ffmpeg.wasm-core most people would like to build. Yes, but only for Firefox 79+ with proper header in both client and server, visit to try whether your Firefox works.įor more details: What is the maximum size of input file?Ģ GB, which is a hard limit in WebAssembly. It is a small code base and under MIT license. ( contains WebAssembly code which is transpiled from original FFmpeg C code with minor modifications, but overall it still following the same licenses as FFmpeg and its external libraries (as each external libraries might have its own contains kind of a wrapper to handle the complexity of loading core and calling low-level APIs.There are two components inside ffmpeg.wasm: Need to pass -row-mt 1, but can only use one thread to help, can speed up around 30% Documentation

Run it multi-threading mode by default, no need to pass any arguments. Multi-threading need to be configured per external libraries, only following libraries supports it now: x264 Const ffmpeg = createFFmpeg ( ) Multi-threading

Pkg install ffmpeg