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

Helix Mobile Producer On-Demand User’s Guideenables broadcasters to deliver multimedia presentations over theInternet.Nnoise Random flaws that occur in audio or video content.PQRpixelA picture element, which is one point—or the smallest unit—in a graphicimage.profileA subset of the MPEG-4 standard that enables an MPEG-4 file to be ascomplex as is necessary for a given software application. Vendors can useprofiles to implement only the part of the MPEG-4 standard that theyneed, knowing that their files will be compatible with products fromother vendors.QCIF (pronounced “q sif”)Quarter Common Intermediate Format. A video display size (1/4 CIF =144 x 176 pixels) well suited to lower bit rates.RVLCReversible Variable Length Coding.Sscene descriptionA description of the media in a streamed presentation and how thecontent is to be reconstructed. The technical term for this is BIFS (binaryformat for scenes).set-top boxA device that connects a TV to the Internet so that Internet informationcan be displayed on the TV screen. This term also is used to refer to a cableor satellite television receiver.SIFStandard Image Format. For video, the SIF NTSC is 352 x 240 pixels, andthe SIF PAL is 352 x 288 pixels.smootherAn algorithm that Helix Mobile Producer On-Demand uses to regulate bitrates in streaming media and prevent unexpected peaks or bursts in the100