Forum, Support | Wowza Media Systems - How to change the EXT-X-VERSION for Apple HTTP Live Streaming

EXT-X-VERSION information indicates the playlist compatibility version for Apple HTTP Live Streaming (HLS). See thedraft-pantos-http-live-streaming-09 specificaiton for more information about the protocol.

Wowza Media Server 3.1.2 and greater by default reports a Apple HLS compatibility version of 3:

Code:

EXT-X-VERSION:3

To update the EXT-X-VERSION number that is reported, add the following property to HTTPStreamer/Properties in [install-dir]/conf/[application]/Application.xml:

Code:

<Property>
     <Name>cupertinoExtXVersion</Name>
     <Value>3</Value>
     <Type>Integer</Type>
</Property>

As of Wowza Media Server 3.5.0, Wowza Media Server now will turn on/off playlist features based on the EXT-X-VERSION value that is set. The following features are controlled through this value:

Floating Point Duration: If the EXT-X-VERSION value is 3 or greater Wowza Media Server will represent chunk durations using more accurate floating point durations rather than whole integer durations.
CODECS Format: If the EXT-X-VERSION value is 4 or greater Wowza Media Server will represent the CODECS values in the playlist.m3u8 reponses using the post-iOS 4.0 format (ex. avc1.42001e) and if the value is less than 4 the pre-iOS 4.0 format (ex. avc1.66.30) will be used.

Each of these features can be controlled indepently from the EXT-X-VERSION version using the following HTTPStreamer/Properties properties:

Floating Point Duration

Code:

<Property>
     <Name>cupertinoFloatingPointDurations</Name>
     <Value>true</Value>
     <Type>Boolean</Type>
</Property>

CODECS Format

Code:

<Property>
     <Name>cupertinoCodecStringFormatId</Name>
     <Value>2</Value>
     <Type>Integer</Type>
</Property>

Where the following values are supported:

1: Pre iOS 4.0 (ex. avc1.66.30)
2: Post iOS 4.0 (ex. avc1.42001e)

How to change the EXT-X-VERSION for Apple HTTP Live Streaming

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