FWIW we’ve been using ffmpeg-wasm on one of our products [0] for a couple months... | Hacker News

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		0x62 on June 1, 2022 \| parent \| context \| favorite \| on: Ffmpeg Buddy FWIW we’ve been using ffmpeg-wasm on one of our products [0] for a couple months and the main issue is garbage collection. You’re limited to 4GB memory, but if you don’t kill and restart the workers every N operations it crashes the browser tab (even with proper unlinking of files in the virtual FS). I suspect you could still make it work with clever usage of the File System Access API as a cache, and process larger files in chunks. Then you’d mostly be limited by the Blob storage limits [1], and memory required to merge processed chunks together. [0] https://nft-inator.com/app [1] https://chromium.googlesource.com/chromium/src/+/224e43ce1ca...

marclundgren on June 1, 2022 [–]

It works great for audio. Here's a wasm-ffmpeg solution I created trim audio.

https://wasm-audio-clipper.netlify.app/

Check the repo: https://github.com/marclundgren/wasm-audio-clipper. I ended up lazily registering the context. The memory footprint stays lower even after trimming multiple clips on the same session.

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