Three Ways to Handle FFmpeg Video Processing in Deno Projects

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Developers building video processing features in Deno face unique challenges due to the runtime's strict security sandbox, which restricts file system access and subprocess execution by default. One option is invoking a locally installed FFmpeg binary via Deno.Command, though this requires explicit permission flags and does not work on Deno Deploy. A second approach uses the WebAssembly-based npm package @ffmpeg/ffmpeg, which needs no binary installation but runs 10 to 20 times slower than native FFmpeg, making it suitable only for lightweight tasks. A third path is calling a remote API such as ffmpeg-micro.com, which requires no local dependencies and works across all Deno environments including Deno Deploy. Each method involves trade-offs between performance, portability, and deployment constraints.

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