Skip to content
FlixMLFlixML Studioopen-source generative AI image and video tool

InfiniteTalk Image-to-Video (lip-sync)

Audio-driven talking-head. Animates a still image to lip-sync a voice line (Wan 2.1 I2V backbone + InfiniteTalk/MultiTalk). Talking-head motion only, not big body motion.

Workflow id: infinitetalk_i2v · Image → Video

Calling it

POST /api/video/generate
{
  "workflow": "infinitetalk_i2v",
  "prompt": "...",
  "image": "...",
  "audio": "..."
}

Params

Every input this workflow takes. Your install is the source of truth:GET /api/workflows/infinitetalk_i2v returns these as they are on your machine.

  • prompt · str · required
    Drives expression/motion. InfiniteTalk is talking-head; keep it simple.
  • image · str · required
    Input image filename (staged to ComfyUI input).
  • audio · str · required
    Input audio filename (wav) staged to ComfyUI input. Drives lip-sync + clip length.
  • negative_prompt · str · default bright tones, overexposed, static, blurred details, subtitles, style, works, paintings, images, static, overall gray, worst quality, low quality, JPEG compression residue, ugly, incomplete, extra fingers, poorly drawn hands, poorly drawn faces, deformed, disfigured, misshapen limbs, fused fingers, still picture, messy background, three legs, many people in the background, walking backwards
  • width · int · default 640
    Resize target width (divisible by 16). Kijai's example: 640, center crop.
  • height · int · default 640
    Resize target height (divisible by 16). Kijai's example: 640, center crop.
  • length · int · default 500
    Cap on output frames (num_frames into MultiTalkWav2VecEmbeds), not an exact length: the node clamps to the audio, so the voice line sets the real length. 500 is Kijai's example_03 value (its max_frames INTConstant).
  • fps · int · default 25
    InfiniteTalk is trained at 25fps; do not change unless you know why.
  • seed · int · optional
    Optional. Leave it out and every run is a new random take. Send a seed only to remake an image exactly: the seed a job used is in its record.
  • steps · int · default 6
    Sampler steps. 6 is Kijai's example_03 value.
  • cfg · float · default 1
  • shift · float · default 11
  • scheduler · str · default dpm++_sde
  • blocks_to_swap · int · default 20
    Transformer blocks kept in system RAM instead of VRAM. 20 is Kijai's example_03 value.
  • model · str · default wan2.1-i2v-14b-480p-Q3_K_S.gguf
    GGUF-quantized Wan2.1 I2V 14B backbone (~7.9GB). Fits 12GB card with block-swap. fp8 safetensors OOMs a 12GB card.
  • multitalk_model · str · default Wan2_1-InfiniteTalk_Single_Q4_K_M.gguf
    GGUF-quantized InfiniteTalk module (~1.3GB). Must be GGUF to pair with the GGUF backbone.
  • wav2vec_model · str · default wav2vec2-chinese-base_fp16.safetensors
  • t5 · str · default umt5-xxl-enc-fp8_e4m3fn.safetensors
  • vae · str · default Wan2.1_VAE.safetensors
  • clip_vision · str · default CLIP-ViT-H-14-laion2B-s32B-b79K.safetensors
  • speed_lora · str · default WanVideo\Lightx2v\lightx2v_I2V_14B_480p_cfg_step_distill_rank64_bf16.safetensors
  • speed_lora_strength · float · default 1
  • filename_prefix · str · default infinitetalk_i2v