Hi Joan - The problem is with all videos - watch the following log file
"Message: Ungültiger Parameter.
Source: System.Drawing
Target site: Void .ctor(Int32, Int32, System.Drawing.Imaging.PixelFormat)
InnerException:
Stack: bei System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
bei System.Drawing.Bitmap..ctor(Int32 width, Int32 height)
bei Kinovea.ScreenManager.PlayerScreenUserInterface.CloneTransformedImage()
bei Kinovea.ScreenManager.PlayerScreenUserInterface.ReportForSyncMerge()
bei Kinovea.ScreenManager.PlayerScreenUserInterface.ShowNextFrame(Int64 _iSeekTarget, Boolean _bAllowUIUpdate)
bei Kinovea.ScreenManager.PlayerScreenUserInterface.SyncSetCurrentFrame(Int64 _iFrame, Boolean _bAllowUIUpdate)
bei Kinovea.ScreenManager.ScreenManagerKernel.OnCommonPositionChanged(Int32 _iFrame, Boolean _bAllowUIUpdate)
bei Kinovea.ScreenManager.ScreenManagerKernel.CommonCtrl_GotoNext()
bei Kinovea.ScreenManager.CommonControls.buttonGotoNext_Click(Object sender, EventArgs e)
bei Kinovea.ScreenManager.ScreenManagerKernel.OnKeyPress(Keys _keycode)
bei Kinovea.ScreenManager.ScreenManagerKernel.PreFilterMessage(Message& m)
bei System.Windows.Forms.Application.ThreadContext.ProcessFilters(MSG& msg, Boolean& modified)
bei System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)
bei System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FPreTranslateMessage(MSG& msg)
bei System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
bei System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
bei System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
bei System.Windows.Forms.Application.Run(Form mainForm)
bei Kinovea.Root.RootKernel.Launch()
bei Kinovea.Root.Program.Main()"