Missing Microsoft MP4 driver

[Leviathan]

I keep installing all kinds of codecs that support MPEG4 (and un-installing them).

Reason is......my MP4sds32.ax driver file is not showing up in the systems32 folder.

No matter which codec I try, none will bring about this file and I need it to convert ASF/WMV to divx.

Help???

[JohnnyMalaria]

I have checked this with GraphEdit (an MS utility that can show you what DirectShow filters are installed).

According to it, the Microsoft MPEG-4 Video Decompressor is mpg4ds32.ax (not mp4sds32.ax)

A google on mp4sds32.ax only yielded about 80 or so pages. It may be an older version.

See if you have mpg4ds32.ax in system32.

If you do, it isn't enough for it to be in the folder. You have to register it with the operating system. To do that, open a command prompt window (Start Menu/Run.../'cmd <ENTER>')
and type the following commands:

c:
cd \windows\system32
regsvr32.exe mpg4ds32.ax
exit

(If your system32 folder isn't on C:, change the first command to the right drive letter).

That will register the decoder so that DirectShow-based applications can be made aware of it.

[Leviathan]

WOW - thanks so much.

I ended up getting the older MP4sds32.ax to "appear" on the list in Sherlock, yet my video converters will still not convert ASF/WMV files.

I can convert everything else......MPEG, Quicktime, etc - but when trying to convert ASF/WMV, the programs won't do it.

Winavi just stays at 0% and doesn't move and Total Video converter won't even open the files to convert.

I registered the Mpg4ds32.ax file, but still no luck.

Sherlock only shows a broken PCM audio codec.

Thing is......just before this happened, I activated the Microsoft ADPCM audio codec and I remember it doing something in the registry.....ever since then, I've had the problem.....I wonder if the two are related???

Thanks again for your help....much appreciated.