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Set one video-wide audio track that loops over the whole video and is included in exports. This is separate from per-clip sound effects. Volume ranges from 0 to 1 and defaults to 0.2.

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set_background_music

Set or replace the video’s background music track, from Tella’s curated music or from your own audio. For a curated track, call list_library with scope: "default" and type: "music" and pass the item’s presetId — there is nothing to upload. For your own audio, call create_source first (kind: "audio" with the track’s duration), PUT the audio bytes to the returned uploadUrl, then pass the sourceId here.
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string
required
Video ID
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string
Required unless sourceId is given. Preset ID of a curated Tella music track, from a default item of type music in list_library
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string
Required unless presetId is given. Audio source ID from create_source (kind: "audio")
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number
Volume from 0 to 1 (default 0.2)
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string
Display name for the track — defaults to the preset’s name when presetId is given

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remove_background_music

Remove the video’s background music track.
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string
required
Video ID