ApsaraVideo Live:AddRtsLiveStreamTranscode

The main streaming domain.

The name of the application to which the live stream belongs. Value requirements:

• The name can contain letters, digits, underscores (_), and hyphens (-).
• We recommend that you specify a name that is more than three characters in length. The name must start with a letter or digit.

The name of the transcoding template. Value requirements:

• The name can contain letters, digits, underscores (_), and hyphens (-).
• We recommend that you specify a name that is more than three characters in length. The name must start with a letter or digit.

The type of the transcoding template.

If you set this parameter to h264, h264-nbhd, or h264-origin, you must also specify the Height, Width, FPS, VideoBitrate, and DeleteBframes parameters. Valid values:

• h264: H.264 standard transcoding template.
• h264-nbhd: H.264 Narrowband HD™ transcoding template.
• h264-origin: H.264 original quality template. If you use this type of template, the same transcoding parameters of the video source are retained by default.
• audio: audio-only transcoding template. If you use this type of template, images are removed from the video source and an audio-only stream is generated. In addition, you must also specify the AudioBitrate parameter.

The height of the output video. Unit: pixels.

The value must comply with the following rules:****

• Height ≥ 100: The height of the video is no less than 100 pixels.
• max(Height,Width) ≤ 2560: The width or height of the video, whichever is greater, cannot exceed 2,560 pixels.
• min(Height,Width) ≤ 1440: The width or height of the video, whichever is smaller, cannot exceed 1,440 pixels.

For example, a resolution of 1560 × 1560 pixels is invalid.

The width of the output video. Unit: pixels.

The value must comply with the following rules:

• Width ≥ 100: The width of the video is no less than 100 pixels.
• max(Height,Width) ≤ 2560: The width or height of the video, whichever is greater, cannot exceed 2,560 pixels.
• min(Height,Width) ≤ 1440: The width or height of the video, whichever is smaller, cannot exceed 1,440 pixels.

For example, a resolution of 1560 × 1560 pixels is invalid.

The frame rate of the output video. Unit: FPS. Valid values: 1 to 60.

The bitrate of the output video. Unit: Kbit/s. Valid values: 1 to 6000.

The bitrate of the output audio. Unit: Kbit/s. Valid values: 1 to 1000.

The group of pictures (GOP) size of the output video. This parameter is used to specify the keyframe interval. Unit: seconds. Valid values: 1 to 3.

Specifies whether to remove B-frames during transcoding. Valid values:

• true: removes B-frames.
• false: retains B-frames. This is the default value.

Specifies whether to transcode audio to the Opus format to be compatible with native WebRTC. Valid values:

• true: transcodes audio to the Opus format.
• false: does not transcode audio to the Opus format.

The codec profile. The video codec profile determines how ApsaraVideo Live performs codec on the video. In normal cases, a greater value indicates a higher image quality and requires more codec resources. Valid values:

• 1: baseline, which is suitable for mobile devices.
• 2: main, which is suitable for standard-definition devices.
• 3: high, which is suitable for high-definition devices.

The audio codec profile. Valid values:

• aac_low
• aac_he
• aac_he_v2
• aac_ld

The audio encoder. Valid values:

• aac
• mp3

The audio sampling rate. Valid values: 22050 to 96000. The value 44100 is commonly used. Unit: Hz.

The number of sound channels. Valid values:

• 1: mono
• 2: stereo

Specifies whether to trigger transcoding only when a stream is pulled. Valid values:

• yes: triggers transcoding only when a stream is pulled.
• no: triggers transcoding whenever a stream is ingested, no matter whether the stream is pulled.