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Old 20th February 2019, 13:52   #54875  |  Link
clsid
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Join Date: Feb 2005
Posts: 5,643
AMD r9 290 does not support hardware acceleration of HEVC/H.265, nor does it do 4K H.264. So that's the simple reason for high CPU usage.

To see whether acceleration is active, you should look at the settings of an active instance of LAV Video decoder. Accessing it either through its systray icon, or through menu>play>filters in MPC.

DirectShow filters are loaded by the player similar as a DLL. They do not run as a separate process. Madvr subprocesses in task manager are not the renderer itself, but helper processes. For example for restoring refreshrate after closing player.
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