ffmpeg-core 0.12.10 ===================== These files come from the npm package @ffmpeg/core 0.12.10 (single thread build of FFmpeg and x264 for WebAssembly), licence GPL-2.0-or-later: ffmpeg-core.js the file of the package (dist/esm/ffmpeg-core.js), not changed. ffmpeg-core.wasm.part0, ffmpeg-core.wasm.part1, ... the file dist/esm/ffmpeg-core.wasm (32232419 bytes) cut into parts of 20971520 bytes at most. Nothing else changed: the parts joined in order are the same file. The page joins them in the browser. Why parts: Cloudflare Workers static assets take 25 MiB for a file at most. Source code and build files: ffmpeg.wasm https://github.com/ffmpegwasm/ffmpeg.wasm ffmpeg.wasm core https://github.com/ffmpegwasm/ffmpeg.wasm-core FFmpeg https://ffmpeg.org/download.html x264 https://code.videolan.org/videolan/x264 You can replace these files with your own build.