Windows 7: Windows 7 DLNA doesn't recognize MP4 files - Why?

I have an external USB drive attached to a Windows 7 Ultimate box. The USB drive has video files that I stream to my Samsung TV using DLNA.

The setup works except last night when I copied over .MP4 files to the USB drive. For this file extension, the files did not show as playable over DLNA. Is there a way to enable the setup to recognize this file extension?



Thank you

Where did you get those particular files from?

One of the issues with MP4 format is in the fact that MP4 is a container format.
Thus, MP4 files can be differently decoded, and some devices do not support all decoding variations. More info

You might have go as far as converting those MP4 files into a different variation of MP4.

I could recommend a free program for converting MP4 and many other video files. Here is a direct link to XviD4PSP 6, because their website winnydows.com requires Silverlight and does not open in some browsers.

It has PRESET configurations for various APPLE devices, Sony, Toshiba, Youtube, etc.