Note: Wowza Media Server™ 3.0.5.03 or later is required.
By default, live Microsoft Smooth Streaming (smoothstreaming) audio and video fragment durations aren't aligned, whereas video-on-demand fragments are aligned. Data packets received by Wowza Media Server are sent to the smoothstreamingpacketizer where the H.264 video and AAC/MP3 audio stream are broken into chunks.
To turn on alignment for live Smooth Streaming, add the following properties to the LiveStreamPacketizer/Properties container in [install-dir]/conf/[application]/Application.xml:
<Properties> <Property> <Name>smoothPacketSortTime</Name> <Value>500</Value> <Type>Integer</Type> </Property> <Property> <Name>smoothAlignAudioWithVideo</Name> <Value>true</Value> <Type>Boolean</Type> </Property> </Properties>
This also requires that smoothstreamingpacketizer be set in Streams/LiveStreamPacketizers in [install-dir]/conf/[application]/Application.xml. This is also described in step #3c in the Configuration section of each live tutorial in the Tutorials section.
<LiveStreamPacketizers>cupertinostreamingpacketizer, smoothstreamingpacketizer,cupertinostreamingrepeater, smoothstreamingrepeater</LiveStreamPacketizers>
Originally Published: 04-11-2012.
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