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RealMedia

RealMedia is a proprietary multimedia container format created by RealNetworks with the filename extension .rm. RealMedia is used in conjunction with RealVideo and RealAudio, while also being used for streaming content over the Internet. Typically these streams are in CBR, but a container for VBR streams named RMVB has been developed.

Overview
A RealMedia file consists of a series of chunks that can be of several different types: • .RMF: RealMedia file header • PROP: File properties header • MDPR: Media properties header • CONT: Content description header • DATA: Data header • INDX: Index header Supported audio formats • RealAudio 1.0 (VSELP), • RealAudio 2.0 (LD-CELP), 28_8 • AC3, • Sipro, • cook, cook • ATRAC3, • RealAudio Lossless Format, • LC-AAC, • HE-AAC, Supported video formats • ClearVideo (from helix spec) • H.263, RV10 • H.263, RV13 • H.263+, RV20 • H.264 precursor, RV30 • H.264 precursor, RV40 • H.263+ (RV20), RVTR • H.265, RMHD ==See also==
Source: Wikipedia ↗
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