I've realized that the majority of the Linux distributions and their video player applications, even Adobe Flash Player, don't use Video Engine Utilization, and I want to know why? Because at least on Windows this technology works very well, and this reduced the load on the CPU a lot. I am hoping to get your opinions. Thanks! I am using the Nvidia proprietary driver.
On Linux it's Video Engine Utilization in NVIDIA X Server Settings for Nvidia graphics driver 331.49.
On Windows it's Video Engine Load in GPU-Z with Nvidia driver as well.
I hope this is understandable.
The below screenshot shows the Sensors tab of the GPU-Z application in Windows:
The next screenshot shows the NVIDIA X Server Settings window in Ubuntu: