Thanks for trying out avi info tip. Its a little utility that was inspired by the limited nature of the avi info utilities available on the web. This particular utility is a windows explorer shell extension that displays an info tooltip, with some of the most useful avi properties, when you move your mouse over an avi file. Installation couldn't be simpler - unzip the file, and run setup.exe If it doesn't seem to work, check to ensure that you have tooltip popups enabled - under Windows XP, this would be Tools|Folder Options|View and ensure "Show pop-up description for folder and desktop items" is enabled. Your operating systems's version of explorer should have a similar option. This program is released as postcard-ware. That means the utility and source code is free for *any* use, but if you like it, I'd be delighted to receive a postcard at the following address: Chris Welsh 30 Highfield Avenue Greenford Middlesex UB6 0JD England Please send bug reports or comments to quantumf-nospam@schedule7.com (delete the "-nospam" before sending) You use this program at your own risk - I can't imagine it damaging anything, but hey, this is windows! Thanks to: My testers: Erich Wehmeyer, Antony Day and Heinrich Hollis Version History 1.1 16 September 2002 Approximately 70 new audio codecs are added 1.0 28 August 2002 Initial Release Additional comments: Currently only avi files are supported. I might add support for asf files presently. No plans at the moment to include support for mpeg or quicktime files, due to lack of information about the file content of these formats. If anyone has useful documents/links in this regard, *please* let me know. The mechanism employed by this application to recognize video codecs is as follows: 1) Extract the four CC code from the stream header 2) If that makes no sense, try getting the four CC code from the BITMAPHEADERINFO structure of the video stream 3) If the codec is installed on the system, query the codec itself for a description. 4) If the codec is not installed, its tries it against a (growing) list of codes pre-programmed into the DLL 5) If none of these work, then it simply outputs "Unrecognized" For audio streams, a similar approach is followed, although the wave format structure is immediately queried for its integer codec identifier. Midi and Text streams are not currently supported. This also means that this program is probably already out of date! So if you do come across "Unrecognized", please let me know, including of course the four CC code displayed in brackets. If you know what the codec *should* be, that would be useful too. Any comments/suggestions gratefully received.