[leptons]

No, not for me. I'm not transcoding 8k videos with it or anything like that. My use case is extracting thumbnails and video color info, basically transcoding to raw 100px x 100px clips and grabbing color info from that. The user would rather it takes as long as it takes than have to charge them a subscription fee to host the transcoding in the cloud.

[mc_woods]

Yup. WASM lacks the "domain specific" acceleration available to native code. So you miss out on any hardware codec support. Same is true for openSSL, there is a bunch of encryption acceleration in modern CPUs that WASM can't access at the moment.