The fan runs really high and Activity Monitor shows over 300% CPU usage at times. It seems to coincide with El Capitan update 10.11.3 but I guess it could be coincidental.
MacBook, iOS 9.2.1
It's a background process that converts video in a photo or iMovie library. If an iOS device is connected, please disconnect it. In the iCloud pane of System Preferences, uncheck the box marked Photos. The activity should stop.
I have the same problem when recording the screen with Quicktime. VTEncoderXPCService uses over 100% of the processor capacity and the recorded video is jerky. I upgraded from Snow Leopard to El Capitan (11.2) on an early 2009 iMac (Intel Core 2 Duo - 2,66 Ghz, with 8 Gb RAM).
Could someone give me an explanation and possibly a solution ? Thanks in advance.
Anyone else having issues with VTEncoderXPCService (631) since last update? At times, it's using 300% of my CPU.
