Note: In most cases, the built-in duration calculation is sufficient and it's not necessary to add the properties described in this article. Only add the properties if you need precise duration.
Note: Enabling the properties will have a small effect on performance. If you have large MP3 files, the accuracy of the duration will be more apparent.
Note: Wowza Media Server™ 3.0.5 (patch 1) or later is required.
- Download and install the latest version: Development Builds
- To calculate more accurate frame sizes, in Application.xml, add the following properties to the MediaReader/Properties container:
<MediaReader> <!-- Properties defined here will override any properties defined in conf/MediaReaders.xml for any MediaReaders loaded by this applications --> <Properties> <Property> <Name>calculateMoreAccurateFrameSize</Name> <Value>true</Value> <Type>Boolean</Type> </Property> <Property> <Name>calculateMoreAccurateFrameWindow</Name> <Value>200</Value> <Type>Integer</Type> </Property> </Properties> </MediaReader>
The calculateMoreAccurateFrameWindow property instructs Wowza Media Server to sample the first 200 frames for more accurate chunk size information.
Originally Published: 02-29-2012.
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