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<blockquote data-quote="tomoqv" data-source="post: 526637" data-attributes="member: 21836">Thanks for the help. I have done some further testing now, here are some of my readings:With MPC Playermkv 1080p, smooth, cpu 35-40%, dxvamp4 1080p, smooth, cpu 35-40%, dxvahdmov 1080p, smooth, cpu 35-40%, dxvawmv 1080p, stutter, cpu 60+%wmv 720p, smooth, cpu 55-60%Mediaportal with MPC-HC codecmkv 1080p, smooth, cpu 10-15%, dxva (I guess)mp4 1080p, smooth, cpu 12-20%, dxva (I guess)wmv 720p, smooth, cpu 35-40%Mediaportal with CoreAVC codecmkv 1080p, smooth, cpu 15-25%, cudamp4 1080p, smooth, cpu 12-20%, cudahdmov 1080p, smooth, cpu 25-35%, no cudaAlso interesting to note that MP with MSFT MPEG2 codec:Live TV, smooth, cpu 15-20%However, every channel change adds another instance of ffdshow audio decoder in the sys trayHaven't managed to get HDTV playback to work again, MP just freezes when I try. It worked before I started testing different codec setups, but with significant audio/video sync issues or stutter.</blockquote>

[QUOTE="tomoqv, post: 526637, member: 21836"] Thanks for the help. I have done some further testing now, here are some of my readings: With MPC Player mkv 1080p, smooth, cpu 35-40%, dxva mp4 1080p, smooth, cpu 35-40%, dxva hdmov 1080p, smooth, cpu 35-40%, dxva wmv 1080p, stutter, cpu 60+% wmv 720p, smooth, cpu 55-60% Mediaportal with MPC-HC codec mkv 1080p, smooth, cpu 10-15%, dxva (I guess) mp4 1080p, smooth, cpu 12-20%, dxva (I guess) wmv 720p, smooth, cpu 35-40% Mediaportal with CoreAVC codec mkv 1080p, smooth, cpu 15-25%, cuda mp4 1080p, smooth, cpu 12-20%, cuda hdmov 1080p, smooth, cpu 25-35%, no cuda Also interesting to note that MP with MSFT MPEG2 codec: Live TV, smooth, cpu 15-20% However, every channel change adds another instance of ffdshow audio decoder in the sys tray Haven't managed to get HDTV playback to work again, MP just freezes when I try. It worked before I started testing different codec setups, but with significant audio/video sync issues or stutter. [/QUOTE]

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