[vr000m]

Most common browser implementations use an Open GOP. That means an IFrame is implemented when needed. On scene change or when there’s high motion.

Only naive implementations would burst an IFrame on to the network, most pace them. And if needed, you could split your iframe into several frame intervals and decode them without creating a burst by bit rate.

Actually a lot of webrtc implementations use 1s or 2s GOP length. Again depends on how much control you’ve on your pipeline. Browsers implementations do make some assumptions on usecase.

[solar-ice]

That is not what open GOP means. Open GOP means pictures can reference IDR frames other than the most recent one in decode order, and is a pain in the ass for various reasons, but is technically more efficient. You're referring to a dynamic GOP.