Seek anywhere. Measure the wait.

Any screen. Sharp from phone to 4K TV, adjusting to your connection without a pause.
Seeks, timed honestly. Replaying a moment you have watched is near-instant (warm); jumping somewhere new waits on the network (cold); watching straight through should never wait, and the stall counter says if it did.

Playing now

Networkyour connection

Seek → first frame 0 timed

—ms