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

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Helix Mobile Producer On-Demand User’s GuideThe lower-speed codecs can be used as “duress” streams in SureStream clips,and to encode soundtracks for low-bandwidth RealVideo clips. When there aretwo versions of a codec, Helix Producer uses the high response version bydefault.About High-Response CodecsThe 20 kbps and 32 kbps music codecs come in two flavors. Helix Producer bydefault uses the “high response” versions, which are the better codecs for mostsituations. But you can also use the “normal response” versions.The high response codecs cover a larger frequency spectrum than the normalresponse versions. Sometimes, the high response version has twice the range asthe normal codec. This means it provides crisper sound and is better atcapturing high frequencies. With symphonic music, for example, the highresponse codec gets more of the flute and piccolo. It can produce moredistortion than the normal response codec with voices and loud sounds suchas drums, though.If you are encoding music with a diverse range of frequencies, stick with thehigh response codecs. If you notice distortion, compare your results with a clipthat uses the normal response codecs. The best tool for determining whichcodec to use is your ear. Listen carefully for minute differences in how the clipsounds. It also helps to have other people listen. Our own ears have differentfrequency responses, too.The slowest stereo codec is 12 kbps. Stereo codecs don’t go lower than thatbecause they would not have enough frequency response for adequate sound.Available Audio CodecsThe wide of available codec bit rates allow you encode your files for your exactaudience needs.Music Audio CodecsCodec Name Codec ID Sampling Rate6 Kbps Music cook8 8kHz8 Kbps Music cook0 -11 Kbps Music cook1 8 kHz16 Kbps Music cook2 8 kHz20 Kbps Music cook3 11.025 kHz20 Kbps Music High Response cook15 22.05 kHz86
APPENDIX C: Audio Codec ReferenceMusic Audio CodecsCodec Name Codec ID Sampling Rate32 Kbps Music cook4 22.05 kHz32 Kbps Music High Response cook16 44.1 kHz44 Kbps Music cook5 44.1 kHz64 Kbps Music cook6 44.1 kHzPlayer Compatibility• All Music Audio Codecs are compatible with RealPlayer G2 and later.Stereo Music Audio CodecsHelix Mobile Producer On-Demand contains an array of RealAudio codecsthat are optimized for stereo music. These RealAudio codecs enable you tostream high-quality stereo music at a wide range of bandwidths.Because the output is designed for dual speaker systems, your music will reacha large audience with varying systems.Available Music Audio CodecA variety music audio codecs are now available in Helix Mobile Producer On-Demand.Stereo Music Audio CodecsCodec Name Codec ID Sampling Rate12 Kbps Stereo Music cook26 11.025 kHz16 Kbps Stereo Music cook17 22.05 kHz20 Kbps Stereo Music (older version) cook9 11.025 kHz20 Kbps Stereo Music cook18 22.05 kHz20 Kbps Stereo Music High Response cook19 22.05 kHz32 Kbps Stereo Music (older version) cook10 22.05 kHz32 Kbps Stereo Music cook20 22.05 kHz32 Kbps Stereo Music High Response cook21 44.1 kHz44 Kbps Stereo Music (older version) cook11 22.05 kHz44 Kbps Stereo Music cook22 44.1 kHz44 Kbps Stereo Music High Response cook23 44.1 kHz64 Kbps Stereo Music (older version) cook12 44.1 kHz64 Kbps Stereo Music cook24 44.1 kHz87
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HELIX MOBILE PRODUCER ON-DEMAND USE
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