HyperFrames Media Create the audio and media assets a composition needs — voiceover (TTS), background music + sound effects, transcription, captions, background removal — then consume and animate that data in HTML. For placing assets into compositions, see . The audio engine — one source for TTS · BGM · SFX Workflows do NOT hand-roll audio or vendor a copy. There is one engine — — that takes a neutral and writes (plus assets under ): All three capabilities degrade on ONE switch — whether a HeyGen credential is present (resolved from / / , not the CLI): | Capability | HeyGen credential present…