SDP Files in ST 2110 - What They Are and How They Work

If you’ve spent any time working with ST 2110 or AES67 systems, you’ve almost certainly encountered SDP files. They show up everywhere - in NMOS sender manifests, in device configuration interfaces, in Wireshark captures, and in the logs of things that aren’t working the way you expected. They look deceptively simple. They’re plain text. But getting them wrong causes problems that can be frustrating to diagnose, especially when the issue is something subtle like a mismatched packet time or an incorrect clock reference. ...

March 29, 2026 · Matt Thomas