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In this case, buffer is cleared and goes to the PASSTHROUGH state. Even if stream delay becomes lower, buffer will remain in the state, and stream will not be buffered until publishing is stopped.

Recommended RTMP stream buffering settings for high quality publishing

The following buffering settings are recommended when publishing a high quality RTMP streams (high bitrate, HD, FullHD resolutions)

rtmp_in_buffer_enabled=true
rtmp_in_buffer_start_size=1000
rtmp_in_buffer_initial_size=3000
rtmp_in_buffer_polling_time=30
rtmp_in_buffer_max_bufferings_allowed=-1

In this case an RTMP stream published should play smoothly for viewers (if channel quality is good enough) and in mixer.

Detect stream parameters by metadata or media traffic

By default, a possible RTMP publishing parameters are set according to SDP settings file. Since build 5.2.1862 the following option is added to enable automatic stream publishing parameters detection by stream metadata or media traffic data

flash_detect_metadata_by_traffic=true

The option is enabled by default. In this case, WCS changes SDP according to a stream metadata received or according to media information from the stream media packets received.

Since build 5.2.1935 it is possible to setup a maximum time to detect stream metadata by media packets received

flash_detect_metadata_by_traffic_timeout=1000

The default timeout is 1000 ms.

Known issues

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