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I run Windows 7 x32 in my Dell Studio 1555 laptop having ATI Mobility Radeon HD 4500/5100 Series Graphics card. I have the latest drivers installed, even then, I got some stuttering, when I try to play HD videos (here in this case I tried an MKV file, 1920x800) using WMP + Win7codecs 3.8.7 final by shark007. I tried other HD players and found not much useful. After some googling, I found an article Play 1080p x264 smoothly using GPU acceleration. I downloaded Media Player Classic: Home Cinema (GPU accelerated) and installed, and changed output to EVR as mentioned in the article to get best GPU acceleration (and I used directx 9 option for RealMedia Video and QuickTime Video, not mentioned in the article).

Settings

The trick worked and I get a flawless video output. But the problem is no subtitles then. I switched it to VMR9 (renderless) and then subtitles came back. But the video playback again lost some performance and got some stuttering. So, the questions are;

  1. Is EVR (Vista/.Net3 the better option for my PC)?
  2. If I use EVR option, how can I get subtitles?
  3. Is DirectX 9 the better option for RealMedia Video and QuickTime Video?
  4. Any other settings available for smoother playback of 1080p videos.
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I downloaded Media Player Classic: Home Cinema (GPU accelerated) and installed, and changed output -> don't. MPC:HC settings come with GPU acceleration without you having to do anything. –  Sathya Nov 19 '12 at 11:16
    
@Sathya whats EVR? and what about DirectX options? –  blasteralfred Ψ Nov 19 '12 at 11:50
    
EVR is the Enhanced Video Renderer [msdn.microsoft.com/en-us/library/windows/desktop/…;. As long as the DXVA filters in the "Internal Filters" tab are checked and EVR is used, the GPU handles all of (supported) video decode and processing/rendering tasks. –  Bala Sivakumar Jun 16 '13 at 7:42
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