The Rendobar Blog

Engineering blog

Explore how Rendobar is built. FFmpeg internals, Cloudflare architecture, and the engineering decisions behind a serverless media API.

01 Engineering blog

Parsing ffprobe output is harder than it looks

Read a media file's metadata with ffprobe, then watch the traps: rotation, HDR, fake image durations, missing channel layouts, and cover art as video.

Abdelrahman Essawy July 19, 2026 3 min

02 Engineering blog

Why ffmpeg.wasm can't run in a Cloudflare Worker

Read why ffmpeg.wasm can't run in a standard Cloudflare Worker. workerd blocks runtime WASM compilation, and the 31 MB core barely survives gzip.

Rendobar June 1, 2026 10 min