Audio-only and video-only streaming

Stream ingest

Ingest audio-only and video-only streams over the Real-Time Messaging Protocol (RTMP). The ingest stream type does not need to match the playback mode. The supported combinations are:

1. For audio-only live streaming: push an audio-only stream or a stream that contains both audio and video.

2. For video-only live streaming: push a video-only stream or a stream that contains both audio and video.

Playback

Play audio-only and video-only streams over RTMP, FLV, or Alibaba Real-Time Communication (ARTC). To receive only audio or only video, append a query parameter to the playback URL. Omitting the parameter plays the stream in normal mode (audio and video together).

• Playback URLs that start with RTMP or FLV

  Audio only: onlyaudio=1

  Video only: onlyvideo=1

  Note

  These parameters are supported only for playback URLs that use the RTMP or FLV protocol.

  Examples:

  • URL without authentication:

    rtmp://DomainName/AppName/StreamName?onlyaudio=1

    http://DomainName/AppName/StreamName.flv?onlyaudio=1

  • URL with authentication:

    rtmp://DomainName/AppName/StreamName?auth_key=timestamp-rand-uid-md5hash&onlyaudio=1

    http://DomainName/AppName/StreamName.flv?auth_key=timestamp-rand-uid-md5hash&onlyaudio=1

• Playback URLs that start with ARTC

  Audio only: subvideo=no (suppresses the video track)

  Video only: subaudio=no (suppresses the audio track)

  Note

  These parameters are supported only for playback URLs that use the ARTC protocol.

  Examples:

  • URL without authentication:

    artc://DomainName/AppName/StreamName@subvideo=no

  • URL with authentication:

    artc://DomainName/AppName/StreamName?auth_key=timestamp-rand-uid-md5hash@subvideo=no