Talking Head Production Create talking head videos with AI avatars and lipsync via inference.sh CLI. Quick Start Requires inference.sh CLI ( infsh ). Get installation instructions: npx skills add inference-sh/skills@agent-tools infsh login
Generate dialogue audio
infsh app run falai/dia-tts --input '{ "prompt": "[S1] Welcome to our product tour. Today I will show you three features that will save you hours every week." }'
Create talking head video with OmniHuman
infsh app run bytedance/omnihuman-1-5 --input '{ "image": "path/to/portrait.png", "audio": "path/to/dialogue.mp3" }' Portrait Requirements The source portrait image is critical. Poor portraits = poor video output. Must Have Requirement Why Spec Center-framed Avatar needs face in predictable position Face centered in frame Head and shoulders Body visible for natural gestures Crop below chest Eyes to camera Creates connection with viewer Direct frontal gaze Neutral expression Starting point for animation Slight smile OK, not laughing/frowning Clear face Model needs to detect features No sunglasses, heavy shadows, or obstructions High resolution Detail preservation Min 512x512 face region, ideally 1024x1024+ Background Type When to Use Solid color Professional, clean, easy to composite Soft bokeh Natural, lifestyle feel Office/studio Business context Transparent (via bg removal) Compositing into other scenes
Generate a professional portrait background
infsh app run falai/flux-dev-lora --input '{ "prompt": "professional headshot photograph of a friendly business person, soft studio lighting, clean grey background, head and shoulders, direct eye contact, neutral pleasant expression, high quality portrait photography" }'
Or remove background from existing portrait
infsh app run < bg-removal-app
--input '{ "image": "path/to/portrait-with-background.png" }' Audio Quality Audio quality directly impacts lipsync accuracy. Clean audio = accurate lip movement. Requirements Parameter Target Why Background noise None/minimal Noise confuses lipsync timing Volume Consistent throughout Prevents sync drift Sample rate 44.1kHz or 48kHz Standard quality Format MP3 128kbps+ or WAV Compatible with all tools Generating Audio
Simple narration
infsh app run falai/dia-tts --input '{ "prompt": "[S1] Hi there! I am excited to share something with you today. We have been working on a feature that our users have been requesting for months... and it is finally here." }'
With emotion and pacing
infsh app run falai/dia-tts --input '{ "prompt": "[S1] You know what is frustrating? Spending hours on tasks that should take minutes. (sighs) We have all been there. But what if I told you... there is a better way?" }' Model Selection Model App ID Best For Max Duration OmniHuman 1.5 bytedance/omnihuman-1-5 Multi-character, gestures, high quality ~30s per clip OmniHuman 1.0 bytedance/omnihuman-1-0 Single character, simpler ~30s per clip PixVerse Lipsync falai/pixverse-lipsync Quick lipsync on existing video Short clips Fabric falai/fabric-1-0 Cloth/fabric animation on portraits Short clips Production Workflows Basic: Portrait + Audio -> Video
1. Generate or prepare audio
infsh app run falai/dia-tts --input '{ "prompt": "[S1] Your narration script here." }'
2. Generate talking head
infsh app run bytedance/omnihuman-1-5 --input '{ "image": "portrait.png", "audio": "narration.mp3" }' With Captions
1-2. Same as above
3. Add captions to the talking head video
infsh app run infsh/caption-videos --input '{ "video": "talking-head.mp4", "caption_file": "captions.srt" }' Long-Form (Stitched Clips) For content longer than 30 seconds, split into segments:
Generate audio segments
infsh app run falai/dia-tts --input '{"prompt": "[S1] Segment one script."}' --no-wait infsh app run falai/dia-tts --input '{"prompt": "[S1] Segment two script."}' --no-wait infsh app run falai/dia-tts --input '{"prompt": "[S1] Segment three script."}' --no-wait
Generate talking head for each segment (same portrait for consistency)
infsh app run bytedance/omnihuman-1-5 --input '{"image": "portrait.png", "audio": "segment1.mp3"}' --no-wait infsh app run bytedance/omnihuman-1-5 --input '{"image": "portrait.png", "audio": "segment2.mp3"}' --no-wait infsh app run bytedance/omnihuman-1-5 --input '{"image": "portrait.png", "audio": "segment3.mp3"}' --no-wait
Merge all segments
infsh app run infsh/media-merger --input '{ "media": ["segment1.mp4", "segment2.mp4", "segment3.mp4"] }' Multi-Character Conversation OmniHuman 1.5 supports up to 2 characters:
1. Generate dialogue with two speakers
infsh app run falai/dia-tts --input '{ "prompt": "[S1] So tell me about the new feature. [S2] Sure! We built a dashboard that shows real-time analytics. [S1] That sounds great. How long did it take? [S2] About two weeks from concept to launch." }'
2. Create video with two characters
infsh app run bytedance/omnihuman-1-5 --input '{ "image": "two-person-portrait.png", "audio": "dialogue.mp3" }' Framing Guidelines ┌─────────────────────────────────┐ │ Headroom (minimal) │ │ ┌───────────────────────────┐ │ │ │ │ │ │ │ ● ─ ─ Eyes at 1/3 ─ ─│─ │ ← Eyes at top 1/3 line │ │ /|\ │ │ │ │ | Head & shoulders │ │ │ │ / \ visible │ │ │ │ │ │ │ └───────────────────────────┘ │ │ Crop below chest │ └─────────────────────────────────┘ Common Mistakes Mistake Problem Fix Low-res portrait Blurry face, poor lipsync Use 1024x1024+ face region Profile/side angle Lipsync can't track mouth well Use frontal or near-frontal Noisy audio Lipsync drifts, looks unnatural Record clean or use TTS Too-long clips Quality degrades after 30s Split into segments, stitch Sunglasses/obstruction Face features hidden Clear face required Inconsistent lighting Uncanny when animated Even, soft lighting No captions Loses silent/mobile viewers Always add captions