which codec identifier tool ?

[halsboss]

I currently use AVIcodec which I suspect is out of date and doesn't understand .mp4 / .mkv.

What product do most experienced people here use/recommend under WinXP ? gspot ?

I don't know which of these tools to choose http://www.videohelp.com/tools/sections/codec-video-identifiers

[Schrade]

I prefer MediaInfo. It gives a gobwad of information.

http://mediainfo.sf.net/