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WCS allows mixing streams of active broadcasts. The output stream of the mixer can be recorded, played or republished using any of technologies supported by WCS.
Mixing is controlled using settings and REST API.
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REST-methods and response statuses
REST-method | Example of REST query | Example of response | Response statuses | Description | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
/mixer/startup |
| 200 - OK 409 - Conflict 500 - Internal error | Creates a mixer the provided stream is published for | ||||||||
/mixer/add |
| 200 - OK 404 - Mixer not found 404 - Stream not found 500 - Internal error | Add the RTMP stream to the mixer | ||||||||
/mixer/remove |
| 200 - OK 404 - Mixer not found 404 - Stream not found 500 - Internal error | Remove the RTMP stream from the mixer | ||||||||
/mixer/find_all |
| 200 - OK 404 - Not found 500 - Internal error | Find all mixers | ||||||||
/mixer/terminate |
| 200 - OK 404 - Not found 500 - Internal error | Terminate operation of the mixer | ||||||||
/stream/startRecording |
| 200 - OK 404 - Not found 500 - Internal error | Start recording of the stream in the given media session | ||||||||
/stream/stopRecording |
| 200 - OK 404 - Not found 500 - Internal error | Stop recording the stream in the given media session |
Parameters
Parameter name | Description | Example |
|---|---|---|
uri | Unique identifier of the mixer | mixer://mixer1 |
localStreamName | Name of the output stream of the mixer | stream3 |
remoteStreamName | Name of the stream added to the mixer | stream1 rtmp://rtmp.flashphoner.com:1935/live/rtmp_stream1 |
mediaSessionId | Media session identifier | ce92b134-2468-4460-8d06-1ea3c5aabace |
status | Stream status | PROCESSED_LOCAL |
Sending the REST query to the WCS server
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Mixing can be configured using the following parameters in the flashphoner.properties settings file
Parameter | Default value | Description |
|---|---|---|
mixer_video_desktop_layout_inline_padding | 10 | Distance (padding) between windows of video streams in the lower line (below the screen sharing window) |
mixer_video_desktop_layout_padding | 30 | Distance (padding) between the screen sharing window and the lower line (the rest streams) |
mixer_video_enabled | true | Enables (by default) or disables video mixing |
mixer_video_grid_layout_middle_padding | 10 | Distance between windows of video streams in one line (without screen sharing window) |
mixer_video_grid_layout_padding | 30 | Distance between lines of windows (without screen sharing window) |
mixer_video_height | 720 | The image height of the mixer output stream |
mixer_video_layout_desktop_key_word | desktop | Keyword for the screen sharing stream |
mixer_video_width | 1280 | The image width of the mixer output stream |
record_mixer_streams | false | Turns on or off (default) recording of all mixer output streams |
Automatic creation of mixers for streams with the '#' symbol in their name requires the application that handles input streams to register the handler: 'com.flashphoner.server.client.handler.wcs4.FlashRoomRecordingStreamingHandler'. Registering the handler can be done using the command line interface. For instance, for the flashStreamingApp application used to publish incoming RTMP streams this can be done with the following command:
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