InstalledCodec is a small utility displays the list of all Codec drivers and DirectShow filters currently installed on your system. For each component the following information is displayed: Display Name, Type, Disabled Status, Installed/Modified Time, Description, Company Name, Filename, and more...
It allows you to easily disable or enable any Codec/DirectShow component or export the list into text/xml/html file.

MediaInfo supplies information about multimedia files (only if the information is available in that file): general information (title, author, director, album, track number, date, duration etc); information about the video (codec, aspect, fps, bitrate etc); information about the audio (codec, sample rate, channels, language, bitrate etc); information about the text (language of subtitle); information about chapters (count of chapters, list).

K-Lite Codec Tweak Tool will scan for broken filters and remove them. If the tool detects something that is broken, it will then prompt you with the details and you will be given the option to remove the broken item.

Ever had a movie where you could only hear the sound and there were no video? Or only video and no sound?
That's almost certainly a codec missing! CodecInstaller is here to help you understand which codec you need and to let you install it in minutes.

CodecInstaller is a Windows program that detects the Audio and Video codecs installed on your system, analyzes files to understand which codecs they require and suggests you to install them.
Check out the features tour for usage examples and screenshots of the program.

This program can be used to analyze files: it supports avi, mpeg, wmv, wma, ogg, flac, mpc, mp3, mp4, wav, wx and will show technical data such as width/height and ratio, length, video codec, framerate, size, bitrate, total frames, quality factor and metadata such as title, album, year (if available).

An advanced feature of CodecInstaller is the Filter Mappings Editor (see screenshot), a tool that will let you change the priority and the types of media a filter will process. This will help solving the issues created by filters producers that set a priority too high for their filters or make them decode formats they cannot handle perfectly.
Another feature targeted to power users is the 'remove filter' functionality: you will be able to either unregister a filter (and see a list of other filters that will be affected) or lower its merit value: the effect is that the filter won't be used anymore.

CodecInstaller can also be used to distribute video files on a CD, to be sure that who receives the CD will have all the necessary codecs installed: with a single tool he will be able to check if the codecs are already installed and up-to-date. CodecInstaller contains a MovieLauncher that displays informations about the distributed video file (author, plot, director...) along with a screenshot and a 'Play' button

VideoInspector — короткая безвозмездная программа, какая отображает детальную информацию о видео-файлах: о аудио и видео составляющих.