Each track either contains a digitally-encoded media stream (using a specific format) or a data reference to the media stream located in another file.Ī WMV file uses the Advanced Systems Format (ASF) container format to encapsulate the encoded multimedia content. The format specifies a multimedia container file that contains one or more tracks, each of which stores a particular type of data: audio, video, or text (e.g. The original video compression format used in the file, also known as WMV, was originally designed for Internet streaming applications, as a competitor to RealVideo. Windows Media Video (WMV) is a file type which can contain video in one of several video compression formats developed by Microsoft. Because both the QuickTime and MP4 container formats can use the same MPEG-4 formats, they are mostly interchangeable in a QuickTime-only environment. The International Organization for Standardization approved the QuickTime file format as the basis of the MPEG-4 file format.
QuickTime File Format (QTFF) is a computer file format used natively by the QuickTime framework.
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