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<blockquote data-quote="nyt" data-source="post: 562788" data-attributes="member: 98737">Thanks for that.&nbsp; &nbsp;&nbsp; Dwm.DWM_PRESENT_PARAMETERS pparams = new Dwm.DWM_PRESENT_PARAMETERS();&nbsp; &nbsp; &nbsp; pparams.cbSize = Marshal.SizeOf(typeof(Dwm.DWM_PRESENT_PARAMETERS));&nbsp; &nbsp; &nbsp; pparams.fQueue = 1;&nbsp; &nbsp; &nbsp; pparams.cBuffer = 4;&nbsp; &nbsp; &nbsp; pparams.fUseSourceRate = 0;&nbsp; &nbsp; &nbsp; pparams.cRefreshesPerFrame = 1;&nbsp; &nbsp; &nbsp; pparams.eSampling = Dwm.DWM_SOURCE_FRAME_SAMPLING.DWM_SOURCE_FRAME_SAMPLING_POINT;&nbsp; &nbsp; &nbsp; Dwm.DwmSetPresentParameters(GUIGraphicsContext.DX9Device.PresentationParameters.DeviceWindowHandle, ref pparams);This seems to work.I'll post a full patch after more testing.MP calculates time between frames right?&nbsp; The reason I set fUseSourceRate to 0 is because setting the rate this way might cause funny issues.It does work though, but doing this just doesn't seem right.&nbsp; &nbsp; &nbsp; pparams.fUseSourceRate = 1;&nbsp; &nbsp; &nbsp; pparams.rateSource.uiNumerator = (int)(refreshRate * 1000);&nbsp; &nbsp; &nbsp; pparams.rateSource.uiDenominator = 1000;...hm, setting the buffer causes jutter on scene changes briefly.still trying to tweak this to work 100%, but very very close.I can't quite get it perfect.&nbsp; There is still some jerkiness coming up in playback no matter what I do.&nbsp; Not as bad as the stutter, but it's there =[If I win-tab during playback (without this code in place) I get perfectly smooth playback.&nbsp; I'll keep at it until I can reproduce that with code.</blockquote>

[QUOTE="nyt, post: 562788, member: 98737"] Thanks for that. Dwm.DWM_PRESENT_PARAMETERS pparams = new Dwm.DWM_PRESENT_PARAMETERS(); pparams.cbSize = Marshal.SizeOf(typeof(Dwm.DWM_PRESENT_PARAMETERS)); pparams.fQueue = 1; pparams.cBuffer = 4; pparams.fUseSourceRate = 0; pparams.cRefreshesPerFrame = 1; pparams.eSampling = Dwm.DWM_SOURCE_FRAME_SAMPLING.DWM_SOURCE_FRAME_SAMPLING_POINT; Dwm.DwmSetPresentParameters(GUIGraphicsContext.DX9Device.PresentationParameters.DeviceWindowHandle, ref pparams); This seems to work. I'll post a full patch after more testing. MP calculates time between frames right? The reason I set fUseSourceRate to 0 is because setting the rate this way might cause funny issues. It does work though, but doing this just doesn't seem right. pparams.fUseSourceRate = 1; pparams.rateSource.uiNumerator = (int)(refreshRate * 1000); pparams.rateSource.uiDenominator = 1000; ... hm, setting the buffer causes jutter on scene changes briefly. still trying to tweak this to work 100%, but very very close. I can't quite get it perfect. There is still some jerkiness coming up in playback no matter what I do. Not as bad as the stutter, but it's there =[ If I win-tab during playback (without this code in place) I get perfectly smooth playback. I'll keep at it until I can reproduce that with code. [/QUOTE]

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