News for hackers. Stuff that matters.

A comment on Ffmpeg Buddy. Parent comment

Re:Ffmpeg Buddy by 0x62 on Wednesday June 01, 2022 @12:37PM (#31584437)
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...

[ Parent | on HN ]
Re:Ffmpeg Buddy by marclundgren on Wednesday June 01, 2022 @01:52PM (#31585502)
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.

[ Parent | on HN ]