MediaInfo Portable (available via PortableApps) is a free app that provides useful technical and tag information about video or audio files without any dependencies. CLI and installer versions are also available.

With MediaInfo Portable's graphical interface, you can effortlessly gather and view a variety of information about audio or video files, such as the title, author, director, album, track number, date, and duration, as well as details about the video and audio codec, aspect, fps, bitrate, sample rate, channels, and language. You can personalize your viewing settings and opt to work through the Command Line or DLL. Furthermore, MediaInfo Portable is entirely integrated with the MS Windows shell, enabling drag-and-drop functionality and a convenient Context menu.

MediaInfo Portable is a highly versatile tool that supports a wide range of video and audio formats, including popular options like DivX, XviD, MPEG, H.263, x264, and more. It also works with various file types, such as MP4, M4A, M4V, QuickTime, RealVideo, and RA, and is available in multiple languages on any operating system. Additionally, it offers several useful features, including multiplexing, demultiplexing, audio and video decoding, a mixer, and compatibility with PAL and NTSC standards.