With the extension mov, files are marked in Quicktime format.
These files usually contain video and audio streams. You can, however, in principle contain any file formats, as the Quicktime format is expandable.
Like AVI, Quicktime is a container format. Therefore, the extension makes no statement about the actual content of the file. It supports a large number of audio, image and video formats, all of which can be contained in various combinations in the file. In addition MOV files can also contain interactive content, panorama pictures, subtitles and chapters.
Some of this content can not be displayed if Quicktime is not installed. Most players only support normal videos in the MOV container.
The file contents can also be protected by DRM. Then you need the appropriate, possibly paid license to view the content. MOV files can also be streamed and are therefore often used on the internet.
Quicktime is developed by Apple as a proprietary solution and is therefore part of the operating system on the Apple Macintosh. The Quicktime software is also available for Windows for free.
For the Linux platform, there are several projects that develop a free open source software that will make Quicktime files usable under Linux.
However, many players can play MOV files as long as they can decode the format of the video and audio streams.
Quicktime is much more than a file format. It is intended as a complete platform for the production of videos and multimedia content. From the reception to the finished product. Therefore, the generation, editing and processing is usually reserved for paid programs and often found only in the professional market.