Wer mit Wowza einen HTTP-Livestream über CloudFront ausliefern möchte, der sollte die Caching-Einstellungen optimieren:
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<HTTPStreamer> <Properties> <!-- HTTP origin mode: on, off --> <Property> <Name>httpOriginMode</Name> <Value>on</Value> </Property> <!-- Apple HLS: cache control --> <Property> <Name>cupertinoCacheControlPlaylist</Name> <Value>max-age=1</Value> </Property> <Property> <Name>cupertinoCacheControlMediaChunk</Name> <Value>max-age=3600</Value> </Property> <!-- Microsoft Smooth Streaming: cache control --> <Property> <Name>smoothCacheControlPlaylist</Name> <Value>max-age=1</Value> </Property> <Property> <Name>smoothCacheControlMediaChunk</Name> <Value>max-age=3600</Value> </Property> <Property> <Name>smoothCacheControlDataChunk</Name> <Value>max-age=3600</Value> </Property> <!-- Adobe HDS: cache control --> <Property> <Name>sanjoseCacheControlPlaylist</Name> <Value>max-age=1</Value> </Property> <Property> <Name>sanjoseCacheControlMediaChunk</Name> <Value>max-age=3600</Value> </Property> <!-- Apple HLS: transport stream counter --> <Property> <Name>cupertinoOnChunkStartResetCounter</Name> <Value>true</Value> <Type>Boolean</Type> </Property> </Properties> </HTTPStreamer> |
und
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<LiveStreamPacketizer> <Properties> <Property> <Name>httpRandomizeMediaName</Name> <Value>true</Value> <Type>Boolean</Type> </Property> </Properties> </LiveStreamPacketizer> |
andernfalls nervt insbesondere beim Neustarten des Streams der gecachte Status “kein Video gefunden”