The TranscoderKeyFrameControl module for Wowza Streaming Engine™ media server software can be used to insert key frames into the transcoded streams at regular intervals. It overrides the original key frame settings and will ensure that the keyframes are aligned between each rendition.
Wowza Streaming Engine 4.6.0 or later is required.
Wowza Transcoder must be enabled in the Wowza Streaming Engine application.
To enable the module, add the following module definition to your application configuration.
| Name | Description | Fully Qualified Class Name |
|---|---|---|
| ModuleTranscoderVideoKeyFrameControl | Insert aligned key frames into transcoded streams. | com.wowza.wms.plugin.transcoder.ModuleTranscoderVideoKeyFrameControl |
The following properties can be used to configure the module.
| Path | Name | Value | Comment |
|---|---|---|---|
| /Root/Application/ | transcoderGopInterval | 2000 | default 2000ms |
| /Root/Application/ | transcoderGopIntervalDebugLog | true | default false |
The key frames are inserted each time the stream timecode rolls over the transcoderGopInterval value so if the transcoding starts on a non-zero timecode then the first GOP may be smaller than the transcoderGopInterval value.
Wowza Streaming Engine Server-Side API Reference
How to extend Wowza Streaming Engine using the Wowza IDE
Wowza Media Systems™ provides developers with a platform to create streaming applications and solutions. See Wowza Developer Tools to learn more about our APIs and SDK.
To use the compiled version of this module, see How to insert aligned key frames into Wowza Transcoder streams (TranscoderKeyFrameControl).
This code is distributed under the Wowza Public License.
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