Hello, I'm about to use MSFN as a last resort for my question which is not really unattended windows related but since this forum is more active then any other forum what so ever, this is probably the best place for me that get a desent answer. I posted my question on the inmatrix-forum (from Zoom Player) but considering the ammount of people active there it will be pretty hard for me to get an answer. I'm gonna post the exact same text as I did there so if any of you can help me please do ===================================================== Hello, my first post here and rightaway a difficult question... For the last months I've been working on my own filterpack which includes: VIDEO: -Gabest - AVI Splitter -Gabest - DirectVobSub (VSFilter) -Gabest - MPEG Splitter -Gabest - MPEG Video Decoder -Gabest - Matroska Splitter AUDIO: -DCoder - MP3 DirectShow File Source Filter -Gabest - OGG Splitter -CoreVorbis DirectShow Filter -CoreAAC DirectShow Filter -AAC Parser DirectShow Filter -DCoder - MOD (Tracker) Directshow File Source Filter -Gabest - CD Audio Filter -Gabest - CDXA Reader Filter -Radlight MPC DirectShow Filter Except for VSFilter (dll-file) all the filters are ax-files and I register these filters with BAT-files. example: ECHO Registering Gabest - MPEG Splitter REGSVR32.EXE /s "Video\Gabest - MPEG Splitter\osMPEGSplitter.ax" furthermore I use: -ffdshow -Open Source AC3 Filter -Real Alternative -QuickeTime Alternative -and offcourse Zoom Player Now then, this all works prefectly, and some day I noticed an MP4-file somewhere on my HDD, but then I noticed Zoom Player wasn't able to play this file! So I went looking on the internet and found this site: Zoom Player On-Line Documentation Soon I discovered that I had to use 3ivx for my MP4 file, but since I only use ax-files I dont want any installers again! So I installed 3ivx on a different computer so I could take a look which particular file I needed (since you can't open it with WinACE or 7zip :X)...this turned out to be: "3ivxDSMediaSplitter.ax" This file I copied to my own computer and used: ECHO Registering 3ivx DirectShow Media Splitter REGSVR32.EXE /s "3ivxDSMediaSplitter.ax" to register the splitter (the BAT-file was in the same directory as the ax-file) ...Zoom Player still couldn't play this MP4-file! Like the Zoom Player On-Line Documentation says: I used REGSNAP to monitor which registry keys were altered/inserted by changing this "Allow Unsupported Decoders" option and so I discovered: [HKEY_CURRENT_USER\SOFTWARE\3ivx] "3ivx Media Splitter Props"=hex:01,00,00,00,00,00,00,00,01,00,00,00,0d,0c,36,\ 41,00,00,00,00 that this setting enables this "Allow Unsupported Decoders" option, BUT... It's the 3ivx-installer that creates this [HKEY_CURRENT_USER\SOFTWARE\3ivx] "directory", so if I would apply this REG-key after I used my BAT-file to register "3ivxDSMediaSplitter.ax" (without installing the 3ivx D4 4.5.1 package itself on my computer) this still wouldn't do any good! So what I ask of you is: after I apply my BAT-file to register the splitter I somehow need to configure this splitter so "Allow Unsupported Decoders" is enabled. Since the above REG-key only applies to the 3ivx installer I need to have another REG-key (or whatever) to enable this option. If someone can help me with this please do! THANKS IN ADVANCE =====================================================