1) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectShow\Preferred In the left hand pane find the following entries: {e06d8026-db46-11cf-b4d1-00805f6cbbea} {31435641-0000-0010-8000-00AA00389B71} USE LAV filter: {EE30215D-164F-4A92-A4EB-9D4C13390F9F} 2)Replace Audio Preferred Replace keys: {000000FF-0000-0010-8000-00aa00389b71} audio to LAV filter: {E8E73B6B-4CB3-44A4-BE99-4F7BCB96E491} 2) Disable mpg-4S Video Decoder C:\WINDOWS\System32 folder Select file MP4SDECD.DLL - Shift+Cntrl+Right Click - Properties - Security - Advanced - Owner - Edit Change current owner to Administrator [Close and reopen properties] Select file MP4SDECD.DLL - Shift+Cntrl+Right Click - Properties - Security - Select Administrator - Edit Allow Full Control Rename to MP4SDECD_.DLL Reboot...