[JASJAR, XDA Exec, MDA Pro ROM Development] DaVince:
Unfortunately, I don't have a copy of default.hv of the original T-Mobile ROM nor a copy of the ROM. :( So I'm just using WM5 ROMs with working video call.

So far what I have done was compare HKCR reg keys (beast0898 suggested I focus on HKCR first) of Jwright's WM5 AKU3.2 1.90.96 (The best WM5 ROM I know with all features working) against Midget's WM6 1.0. I have been very meticulous with it that, I took anything I see that may have the slightest chance of being involed with video call. Here's everything I got under HKCR.. I already added these on my ROM.. but unfortunately I couldn't test it 'til tomorrow 'coz I currently don't have another 3G phone with me.

[HKEY_CLASSES_ROOT\DirectShow\MediaObjects\Categories\57f2db8b-e6bb-4513-9d43-dcd2a6593125\6b928210-84e7-4930-9b33-1eb6f02b526e]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{499EC7C3-8681-489D-8E75-6A263D8E42CA}]
"Default"="ftp_tab"
[HKEY_CLASSES_ROOT\CLSID\{499EC7C3-8681-489D-8E75-6A263D8E42CA}\inprocserver32]
""="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{2C0E9904-F32D-4f53-875F-479F5CA81E18}\InprocServer32]
"Default"="\\Windows\\ContactSDMenu.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{079E9BA2-3C08-4700-99FE-24BA9A0EBCC1}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{079E9BA2-3C08-4700-99FE-24BA9A0EBCC1}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{16C8A58D-F37F-4B62-BA8C-7A04B61E43E3}]
"Default"="audio_tab"
[HKEY_CLASSES_ROOT\CLSID\{16C8A58D-F37F-4B62-BA8C-7A04B61E43E3}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{1AD110A1-B3E6-4CB9-AC0F-69E059AFBFEF}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1AD110A1-B3E6-4CB9-AC0F-69E059AFBFEF}\InprocServer32]
"Default"="DPadMenu.dll"
[HKEY_CLASSES_ROOT\CLSID\{1B544C20-FD0B-11ce-8C63-00AA0044B51E}\Pins\Input\Types\{e436eb83-524f-11ce-9f53-0020af0ba770}\{e436eb88-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1B544C20-FD0B-11ce-8C63-00AA0044B51E}\Pins\Output\Types\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb78-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb79-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7a-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7b-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7c-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7d-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{1d4d3676-96ef-4cd7-a3d7-07fac0d0c585}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7e-524f-11ce-9f53-0020af0ba770}]
""=""

[HKEY_CLASSES_ROOT\CLSID\{4f4ba16c-ccb0-4d23-b1e8-672c7dfe4a02}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{51A2CB38-154E-4C92-A625-A83871C99EC2}]
"Default"="Phone Pad"
[HKEY_CLASSES_ROOT\CLSID\{51A2CB38-154E-4C92-A625-A83871C99EC2}\DefaultIcon]
"Default"="\\Windows\\IntelliPad.dll, 0"
[HKEY_CLASSES_ROOT\CLSID\{51A2CB38-154E-4C92-A625-A83871C99EC2}\InProcServer32]
"Default"="\\Windows\\IntelliPad.dll"
[HKEY_CLASSES_ROOT\CLSID\{51A2CB38-154E-4C92-A625-A83871C99EC2}\IsSIPInputMethod]
"Default"=dword:00000001
[HKEY_CLASSES_ROOT\CLSID\{6DB81DD8-3787-4AA5-8B2E-D1778B4CEE8F}]
"Default"="images_tab"
[HKEY_CLASSES_ROOT\CLSID\{6DB81DD8-3787-4AA5-8B2E-D1778B4CEE8F}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{70e102b0-5556-11ce-97c0-00aa0055595a}\Pins\Input\Types\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{71D2DA40-5BE7-411D-976E-746238451234}]
"Default"="VsrSD Plugin"
[HKEY_CLASSES_ROOT\CLSID\{71D2DA40-5BE7-411D-976E-746238451234}\InprocServer32]
"Default"="\\Windows\\VsrSD_COM.dll"
[HKEY_CLASSES_ROOT\CLSID\{74762928-DA1B-4067-9BA8-353957176827}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{74762928-DA1B-4067-9BA8-353957176827}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{7CB99F67-9930-4375-919C-37512108F0C3}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{7CB99F67-9930-4375-919C-37512108F0C3}\InprocServer32]
"Default"="DPadMenu.dll"
[HKEY_CLASSES_ROOT\CLSID\{8B77C05D-8C21-4257-9029-DE5F45F52AF3}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{8B77C05D-8C21-4257-9029-DE5F45F52AF3}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{9A870BCC-D423-4FB9-9432-EA4C36C11B4B}]
"Default"="obex_tab"
[HKEY_CLASSES_ROOT\CLSID\{9A870BCC-D423-4FB9-9432-EA4C36C11B4B}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins\Input]
"IsRendered"=dword:00000001
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins\Input\Types]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins\Input\Types\{73646976-0000-0010-8000-00AA00389B71}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins\Input\Types\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7d-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A019CB36-A77E-4f45-9F80-13976B99529B}\Pins\Input\Types\{73646976-0000-0010-8000-00AA00389B71}\{FF61F76A-AA6E-4d9d-8841-FDE6650FF1E3}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\AudioOut\Types]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\AudioOut\Types\{73647561-0000-0010-8000-00AA00389B71}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\AudioOut\Types\{73647561-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\VideoOut\Types]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\VideoOut\Types\{73646976-0000-0010-8000-00AA00389B71}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\VideoOut\Types\{73646976-0000-0010-8000-00AA00389B71}\{e436eb7d-524f-11ce-9f53-0020af0ba770}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}\Pins\VideoOut\Types\{73646976-0000-0010-8000-00AA00389B71}\{FF61F76A-AA6E-4d9d-8841-FDE6650FF1E3}]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{B1706E0D-9045-4ECF-A57B-B8226F93871B}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{B1706E0D-9045-4ECF-A57B-B8226F93871B}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{C683873D-4B05-4FA9-9624-CB9E9BEF530B}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{C683873D-4B05-4FA9-9624-CB9E9BEF530B}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{CA2F9342-DACF-43AA-815B-7F75162FA576}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{CA2F9342-DACF-43AA-815B-7F75162FA576}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\CLSID\{CC58E280-8AA1-11d1-B3F1-00AA003761C5}\InprocServer32\Pins\Capture Output\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{CC58E280-8AA1-11d1-B3F1-00AA003761C5}\InprocServer32\Pins\Preview Output\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{CC58E280-8AA1-11d1-B3F1-00AA003761C5}\InprocServer32\Pins\Video Input\{73646976-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{DDBF8815-7C94-4239-8894-316153AA28C8}]
""=""
[HKEY_CLASSES_ROOT\CLSID\{DDBF8815-7C94-4239-8894-316153AA28C8}\inprocserver32]
"Default"="btp_ui_ext.dll"
"ThreadingModel"="Free"
[HKEY_CLASSES_ROOT\DirectShow\MediaObjects\Categories\33d9a760-90c8-11d0-bd43-00a0c911ce86\d23b90d0-144f-46bd-841d-59e4eb19dc59]
"Default"=""
[HKEY_CLASSES_ROOT\CLSID\{4f4ba16c-ccb0-4d23-b1e8-672c7dfe4a02}\InprocServer32\Pins\Audio Input\{73647561-0000-0010-8000-00AA00389B71}\{00000000-0000-0000-0000-000000000000}]
""=""
[HKEY_CLASSES_ROOT\Filter\{A019CB36-A77E-4f45-9F80-13976B99529B}]
""=""
[HKEY_CLASSES_ROOT\Filter\{A06DF275-C4F3-46c7-B520-3A16B3D1B8C2}]
""=""

And added these files found on some of those reg keys:

btp_ui_ext.dll

contactsdmenu.dll

IntelliPad.dll

vsrsd_com.dll

vsrsd_com.ini

I have no idea what these files do, but I just added them to make sure I don't leave anything out.

If this doesn't work.. I'll try looking at HKLM keys.

If that still doesn't work. I'll try HKCU (probably nothing here).

If that still doesn't work, I'll try mix and matching different builds of dll files.

If all this doesn't work. I will just pray that you guys figure it out.. lol :D I don't know what to do anymore. :confused:

I'm already applying brute force.. I've been very meticulous since I couldn't really just pick the correct reg keys.. I'm not very knowledgeable at this. :(