Livestreaming

Multiple scenes

• If Text Control is used to generate an audio file, the total number of words of all paragraphs must be greater than 200.
• If Audio Control is used to generate an audio file, the duration of each audio file must be longer than one minute.

Text control

If Text Control is used to generate an audio file, the text requirements are as follows:

• There must be fewer than 2,000 characters in each paragraph (fewer than 3,000 if SSML tags are contained).
• The total number of characters of all paragraphs in a live room must be fewer than 300,000 if SSML tags are contained.

Video format

The supported video formats are MP4, M4V, MKV, MOV, FLV, 3GP, WMV, and AVI.

Video requirements:

• Resolution ≤ 1080p
• Frame rate ≤ 30 FPS
• AV1, H.264, or H.265 for encoding

  AV1 and H.265 are only supported by the Chrome browser.

• Video sampling format: YUV420
• Video size < 1 GB
• Overlaid videos ≤ 3, including the videos configured during interaction

Audio format

The supported audio formats are MP3, M4A, and WAV.

Audio requirements:

• Only mono audios are extracted.
• The total size of audio files is less than 500 MB.

Image format

The supported image formats are PNG, JPG, and JPEG.

Image requirements:

• Resolution ≤ 1080p
• Image size < 500 MB

Subtitling

Punctuation marks (such as ,.:;!?...) in subtitles will be automatically removed.

• If the punctuation mark to be automatically removed is in the middle of a piece of text, a space is added after the punctuation mark is removed.
• If the punctuation mark to be automatically removed is at the end of a paragraph, it will be removed directly.

Some punctuation marks (""()·~--) cannot be automatically removed.

Voice cloning

A cloned voice cannot be used for livestreaming.

Transparent background

Allowed only for video production.

Ending a livestreaming task as a tenant

A tenant can end a livestreaming task:

• On the livestream startup page of the MetaStudio console.
• Alternatively, by calling the API for ending a virtual avatar livestreaming task.

Automatically ending a livestreaming task

To protect tenants' interests, a livestreaming task will be automatically ended when:

• There is no RTMP stream push on the MetaStudio console and the playback window has been closed for about two to three minutes.
• APIs are called for livestreaming, there is no RTMP stream push, and viewers have left the RTC room for about two to three minutes.

Freezing a livestreaming task

If the live content involves compliance risks, the service O&M personnel directly freeze the livestreaming task on the O&M page.

Controlled by a tenant

MetaStudio allows controlling livestreams so that streamers can capture a complete live video.

Before starting livestreaming, deselect Automatic livestreaming after loading on the console (that is, set play_policy.auto_play_script to FALSE). After a livestreaming task is started, livestreaming will not start until the tenant's instruction of starting livestreaming is sent (for API calling, the play_start instruction is sent through the RTSA COMMAND instruction). Before the instruction is sent, the virtual streamer remains silent.

Live room content review

Content review on MetaStudio:

• By default, each configuration item of a live room, such as the live room name, description, text, audio, video, and image, will be automatically reviewed to eliminate risks of violation and avoid generating illegal live content.
• If a tenant has interconnected with another content risk control system and is committed to being responsible for content risk control, the tenant can submit a service ticket to disable content review on MetaStudio.
• If complaints about live content are received, MetaStudio will freeze the live rooms and livestreaming tasks that violate the regulations in accordance with applicable laws and regulations. When necessary, all resources of the tenant will be frozen.