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InfiniTalk Audio-to-Video

Generate talking head videos from a portrait image and audio using InfiniTalk for natural lip-synced speech animation

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Inputs

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Execution Steps

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Overview

InfiniTalk Audio-to-Video turns a portrait image and premade audio track into a lip-synced talking-head video, guided by a prompt. Use it for founder clips, character explainers, ad reads, and social video drafts when the voice audio is already prepared.

Use cases

  • Turn a portrait and voiceover into a short talking-head video for campaign review.
  • Create an explainer or social clip from prepared narration and a character image.
  • Use the prompt to guide style, pose, or visual context around the speaker.
  • Compare 480p and 720p or acceleration settings before choosing a draft.

Input tips

  • Provide public image_url and audio_url values that can be fetched without login.
  • Write a prompt that describes the desired talking-head style, context, and motion.
  • Use a clear, face-forward portrait and clean speech audio.
  • Choose 41-721 frames; 145 is the default.
  • Choose 480p or 720p resolution; 480p is the default.
  • Use acceleration none, regular, or high based on speed and quality needs.
  • Use seed for repeatable variants.

Expected output

The AI Tool returns one generated talking-head video with a downloadable URL, duration in seconds, optional content type, file name, file size, the seed used, and cost metadata. The InfiniTalk output view renders video playback and shows the model label plus seed.

Caveats

  • Private, expired, or blocked image and audio URLs will fail.
  • Poor audio, cropped portraits, low-quality faces, or mismatched prompt context can reduce lip-sync quality.
  • This AI Tool uses premade audio; it does not create the voice track, clone a voice, or write the script.
  • Generated facial motion should be reviewed for realism, consent, brand fit, and policy fit.
  • Frame count and acceleration settings guide generation, but output still needs timing and artifact review.
  • Use InfiniTalk Text-to-Video when you want built-in voice synthesis from text instead of an audio file.

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