Cut ffmpeg as needed, and use emscripten to compile and run

One 、FFmpeg There are three versions

Download FFmpeg

1、static edition

Static library version There are 3 individual exe： ffmpeg.exe, ffplay.exe, ffprobe.exe, Every exe It's big , Because it's related dll Has been compiled to exe It went to the . As a tool, this version can meet our needs .

 

 

2、shared edition

        Dynamic library version , There are 3 individual exe：ffmpeg.exe,ffplay.exe , ffprobe.exe , Some more dll, for instance avcodec-54.dll And so on. .shared Inside exe It's very small , Because when they're running , To the corresponding dll Middle calling function . The running process of the program must depend on the dll file .