However, if there is no specified codec information, you still need to switch to a third-party tool that can supply the file information. You should see the video/audio codec on the new Properties dialog. Add the video in the video library of Windows Media Player, under the Videos section, right click on the video, select Properties. Meanwhile, here is a way you may also give a try without asking for help from these tools: They can read the video information, check the video/audio codec, and even direct you to the sources where you can download the missing codec). dvr-ms extension, for example, is usually just an AVI file that's been compressed by using some version of an MPEG video codec.If you want to install a particular codec for playing a file on Windows Media Player, you need first know the exactly missing codec, which usually requires the help of third-party detector software (MediaInfo, VideoInspector, and Codec Installer are good options.
And it's possible for anyone to rename a file without changing the file's format.
Many programs create files with custom file extensions. However, there are limits to this approach. You might be able to tell the format of a file by looking at the file name extension (such as. You'll find several tools as well as useful related info. To find one, search for "codec identification tool" on the web. Use a non-Microsoft codec identification tool. On the File tab, look at the Audio codec and Video codec sections. While the file is playing, right-click the file in the library, and then select Properties. To determine what codec was used with a specific file, play the file in the Player, if possible. There isn't a way to determine with absolute certainty the codec used to compress a file, but the following are your best options: This lets you return to your original system configuration, if necessary. Before installing any digital media components, set up a system restore point. Even then, use caution: some codec providers offer minimal customer support. Install codecs, filters, and plug-ins only from trusted sources, such as the provider's official website. Therefore, we strongly discourage you from installing these codec packs and recommend that you remove them if you have installed them and are having problems with the Player. Use caution when installing codecs that you find on the internet, particularly some of the free codec packs that claim to include codecs from a wide variety of companies or organizations. There are known compatibility issues with some of the components in these codec packs, and these can trigger serious playback problems in Windows Media Player and other players, cause system corruption, and make it difficult for Microsoft Support to diagnose and troubleshoot playback issues.
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