Tin Fehlman from Daily Cup of Tech had recently posted about GSpot utility for determining type of video file (if you use K-Lite Codec Pack it has GSpot bundled). While GSpot gets job done I hardly like it for weird interface and some instabilities I experienced in the past versions.
MediaInfo is similar utility that works with numerous types of video and audio files.
What it does
MediaInfo processes any media file you throw at it and provide information about file’s container and streams inside it (video, audio, subtitles).
Interface is simplistic with few pre-defined layouts as well as option to create custom ones. Extremely copy/paste friendly.
App is extensive open source project and is available for numerous operating systems. For Windows I suggest downloading GUI Windows Without Installer package because it is natively portable. You need 7-Zip (or compatible unpacker like Universal Extractor ) to uncompress it. Otherwise just go for package with installer which comes as regular executable.
Freeware, open source, available in multiply languages, completely portable . Rich on technical details but it’s better to ignore extra than to miss something, right?