properties> date created... i thought this meant the date the video was created, but finally realized that date changes every time i move, reorganize, even open a file. often, the date modified is earlier than date created. the date a jpeg was taken is readily available. is there any way to get the same information from an AVI or MP4 FILE? thank you for any information you can give.
A:
The existence of that piece of metadata is entirely dependent on the application that wrote the file. It's very common to load up JPG files with metadata (EXIF tags) about the file, such as a timestamp or camera information or geolocation. ID3 tags in MP3 files are also very common. But it's a lot less common to see this kind of metadata in video files.
If you just need a tool to read this data from files manually, GSpot might do the trick: http://www.videohelp.com/tools/Gspot
If you want to read this in code then I imagine each container format is going to have its own standards and each one will take a bit of research and implementation to support.
David
2010-06-23 19:10:22