RealMedia

RealMedia
Filename extension	.rm, .rma, .rmi, .rmv, .rmvb, .rmhd, .rmm, .ra, .ram
Internet media?type	application/vnd.rn-realmedia
Uniform Type Identifier?(UTI)	com.real.realmedia
Developed?by	RealNetworks
Type of format	Container format
Open format ?	No
Free format ?	No

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

Overview edit

A RealMedia file consists of a series of chunks that can be of several different types:

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