helix mobile producer on-demand user's guide - RealPlayer

GlossaryIKMI-framesAn MPEG-4 term for video key frames.InternetAn interconnected system of networks that connects computers aroundthe world, using the TCP/IP protocol.ISOInternational Organization for Standards. ISO is a network of thenational standards institutes of 146 countries. ISO standards aretechnical agreements that provide the framework for compatibletechnology worldwide.KbpsKilobits per second. A standard measure of the rate of data transmissionover electronic devices.key frameA video frame that fully refreshes its contents and can be used as areference point for other frames in the video sequence. In MPEGterminology, this is known as an I-frame.motion estimationFor video, a method that estimates changes between frames..movThe Apple QuickTime file name extension for movie files.MPEG (pronounced “m-peg”)As defined on the MPEG Web site, MPEG stands for Moving PicturesExperts Group and is the name given to a family of internationalstandards for coding audiovisual information in a compressed digitalformat. The MPEG family of standards includes MPEG-1, MPEG-2,MPEG-4, MPEG-7, and MPEG-21, which are formally known as ISO/IEC-11172, ISO/IEC-13818, ISO/IEC-14496, ISO/IEC-15938, and ISO/IEC21000, respectively.multimediaA media presentation that contains some combination of text, graphics,sound, video, and animation. Most personal computers can now displaymultimedia content, and the source is typically a CD because the files arelarge and require considerable storage capacity. The MPEG-4 format99