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

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Helix Mobile Producer On-Demand User’s GuideAppendix A explains the audience file syntax. Refer to Appendix B forinformation about how to copy audience file information into a job file.Bit Rates in AudiencesBit rates are stated in kilobits per second (Kbps). There are several parametersthat you must consider when creating an audience:• You need to know the channel capacity supported by the connection.• The maximum streaming bit rate is the highest bit rate that the bit-ratesmoother allows for audio or video transmission by a streaming server. Themaximum streaming bit rate must be less than the channel capacity.• The combined media bit rate is the sum of the audio bit rate and the videobit rate in a presentation.• The audio bit rate is the specified bit rate for an audio stream.Audience ConsiderationsYou can adjust the job parameters and create specific audiences that take yourcontent and broadcast requirements into account.Consider the following criteria when developing a job:• The type of content• The size and length of the presentation• The level of video quality you want• The level of audio quality you want• The available bit rate• The amount of time required for encodingSureStream Audiences for RealMedia ClipsWhen you choose to encode a clip for a particular audience, you are tellingHelix Mobile Producer On-Demand to create a stream for that audience.Note that although you can choose more than one audience for an encodingjob, the amount of encoding time required and the size of the encoded outputwill increase with every audience stream that is added. For that reason,22
CHAPTER 4: Audiencesgenerally it is recommended that you select no more than two or threeaudiences that you know you need for a given clip.23
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helix mobile producer on-demand user's guide - RealPlayer

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