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AI video model
Volcengine
Video Lip Sync

Volcengine Video Lip Sync

Video Lip Sync rebuilds mouth movement in one existing video to match a target vocal track. Lite mode targets front-facing single-person video, while Basic mode handles more complex single-person scenes and can enable scene detection.

Workflow
Video + audio lip sync
Modes
Lite / Basic
Video
360p–1080p; 24–60 FPS
Pricing
8 / audio second
30-second overview
  • A clear existing-video-plus-target-audio workflow
  • Lite and Basic modes for two kinds of single-person footage
  • Upfront validation of video resolution, FPS, bitrate, and file size
  • Preauthorization based on signed audio seconds

Popular searches: How do I use Video Lip Sync? · How much does AI video lip sync cost? · How do I sync lips after dubbing a video?

Examples

Cinematic scene

Create a 15-second polished 3D animated comedy short, cinematic feature-film quality, 16:9 widescreen. Stylish modern café, warm natural lighting, expressive character animation, sophisticated visual humor, precise comedic timing, minimal or no dialogue. The joke must be immediately understandable and completely visual. MAIN CHARACTER: A stylish young woman with expressive facial animation, fashionable casual clothing, sitting alone at a café table with a coffee and smartphone. Original character design. 0–3 seconds: The woman holds her smartphone up and takes a selfie. She looks at the photo. Her expression immediately changes to mild disappointment. Very clear visual storytelling: she wants a better selfie. 3–6 seconds: She adjusts her hair and changes the angle of the phone. Takes another selfie. Looks at it. Still not satisfied. She adjusts her sunglasses, straightens her clothing, moves her coffee cup slightly, and takes another photo. 6–10 seconds: She becomes increasingly serious about getting the perfect photo. She stands up and moves her chair a few centimeters. Tilts her head. Changes the phone angle. Moves her coffee cup again. Takes several more photos in rapid succession. A waiter carrying coffee approaches and has to carefully walk around her while she remains completely focused on her phone. A nearby customer briefly watches her, amused. The woman behaves as if she is conducting an extremely important professional photo shoot. 10–13 seconds: She finally takes one last photo. She looks at the screen. Her face lights up with enormous satisfaction. Perfect. She smiles proudly and relaxes. 13–15 seconds: She begins scrolling through her photos. Her smile slowly disappears. She turns the phone slightly. Reveal clearly: the phone camera has been facing the WRONG DIRECTION the entire time. Her screen shows dozens of beautifully composed photographs of the café wall, ceiling, and background instead of herself. She slowly looks from the phone toward the exact café wall she has photographed repeatedly. A waiter passes behind her and gives her a tiny sympathetic look. She sits completely still in stunned embarrassment. CUT TO BLACK. STYLE: High-end original 3D animation, expressive facial acting, elegant cinematic café environment, subtle exaggerated body language, dry observational comedy, polished materials, beautiful lighting, precise comedic editing. The character's behavior should become increasingly serious while the actual problem remains extremely trivial. No surreal events, no explosions, no random chaos, no slapstick, no complicated dialogue. The audience must understand the joke immediately.

Cinematic scene

Format: 30-second photorealistic handheld phone vlog Setting: The coast of what is now North Carolina, 1585 Audio: Diegetic sound only. No music. Character lock — Vlogger: A 25-year-old fashion icon with a distinctive face and poised presence. Sleek dark hair, sculptural silver earrings, tailored cream jacket, black trousers, striking boots, and a small designer bag. She holds her phone throughout. Keep her face, hair, outfit, and voice consistent across every shot. Her confidence gradually gives way to uncertainty. 00:00–00:05 — Arrival A white glitch tears across her phone camera. She stumbles onto a sandy path beneath tall coastal trees, catches herself, checks her outfit, and looks up. Vlogger: “Wait. Where am I?” 00:05–00:11 — The stares She turns the phone outward. Indigenous people move between timber homes, carrying baskets, tools, and water vessels. Conversations pause as several people notice her unfamiliar clothes and phone. Aware of the attention, she lowers the camera slightly. Vlogger, quietly: “They’re all looking at me.” 00:11–00:17 — Realization She steps aside to let a family pass. The phone briefly hunts for focus between her polished boots and the sandy path. Near the shoreline, she glimpses a small group of English newcomers. Vlogger: “This is… 1585?” 00:17–00:24 — A different perspective From a respectful distance, she films someone weaving, children moving between homes, and people exchanging goods. An older woman meets her gaze. The vlogger stops filming outward and turns the camera toward herself, visibly shaken. Vlogger: “I came here thinking I’d see the past. This is their present.” 00:24–00:30 — Return Light flickers at the edge of the frame. She looks down the path once more as people resume their day, then lifts the phone toward her face. Vlogger: “I need to remember what I actually saw.” The path dissolves into a brief white flicker. Cut to black. Visual and sound direction: Spontaneous handheld phone footage with subtle autofocus hunting and natural exposure shifts. Natural daylight, wind through trees, footsteps on sand, distant voices, and coastal birds. Dialogue is clear and precisely lip-synchronized. Historical and visual constraints: Portray Indigenous people as individuals going about ordinary life, with historically grounded clothing, homes, and objects. No modern streets or buildings, generic “tribal” costumes, ceremonial dress presented as everyday wear, exaggerated reactions, comedy, changing facial features or clothing, distorted hands, on-screen text, captions, logos, subtitles, watermarks, or music. Do not call the location “the USA” in 1585.

Cinematic scene

Create a 15-second original chaotic action-comedy animation, 16:9. A normal adult stands in front of a vending machine, trying to buy a bag of chips. 0–3 seconds: The person inserts money and presses a button. Inside the machine, a bag of chips begins falling. Almost. It becomes stuck halfway between two metal coils. The person stares at it. The snack hangs there motionless. 3–6 seconds: The person taps the glass. Nothing. Taps harder. Nothing. They shake the machine slightly. The snack wiggles. The person's eyes light up. Then the snack stops moving completely. Their confidence disappears. 6–9 seconds: The person launches into a ridiculous recovery operation. They study the machine from multiple angles. Slide across the floor. Climb onto a nearby chair. Attempt impossible rescue maneuvers. The vending machine is filmed like a massive fortress protecting a priceless treasure. 9–12 seconds: A spectacular action sequence unfolds. The person swings from the side of the machine, pulls, pushes, and performs increasingly absurd stunts. Finally the stuck snack breaks free. It flies through the collection slot. The person dives dramatically through the air and catches it with both hands. Total victory. 12–15 seconds: The person proudly examines the recovered snack. Then freezes. It is not the snack they purchased. The original bag is still visibly stuck inside the machine. The person slowly looks from the recovered snack to the original snack. Complete emotional devastation. CUT TO BLACK. High-energy original 3D animated comedy, spectacular action-adventure parody, dynamic camera movement, dramatic low angles, expressive character acting, escalating visual chaos, clear storytelling, precise comedic timing. The vending machine should feel like an impossible obstacle while remaining an ordinary vending machine. No dialogue, no subtitles, no text overlays, no logos, no recognizable brands, no copyrighted characters, no existing franchises, no celebrity likenesses, no gore, no horror.

Cinematic scene

Create a 15-second original chaotic action-comedy animation, 16:9. A normal office meeting is taking place in a quiet conference room. One sharply dressed man sits at the table trying to remain perfectly professional. 0–3 seconds: The man suddenly feels a sneeze coming. His nose twitches. His eyes widen slightly. He immediately realizes what is about to happen. He tries to remain completely still. 3–6 seconds: He pinches his nose. Holds his breath. Closes his eyes. The sneeze keeps building. His cheeks puff slightly. His entire body begins trembling. The people around him slowly notice something is wrong. 6–9 seconds: The sneeze becomes ridiculously powerful. Papers on the table begin fluttering. A coffee cup vibrates. His tie starts blowing backward. His chair slowly slides away from the table. He desperately grips the edge of the table with both hands. His expression says absolute panic while everyone else watches in stunned silence. 9–12 seconds: He finally loses the battle. ACHOO! A huge comedic burst of air launches him backward across the room. Papers explode upward. Chairs roll away. Office supplies fly through the air. He crashes harmlessly into a large stack of empty cardboard boxes. The boxes collapse around him. 12–15 seconds: Complete silence. The room is covered with papers. The man slowly rises from the cardboard boxes. He calmly straightens his jacket and adjusts his tie, trying to recover his dignity. Everyone stares at him. He gives a tiny embarrassed smile. Then his nose twitches again. His eyes widen. CUT TO BLACK. High-energy original 3D animated comedy, spectacular cinematic action, exaggerated but coherent physical comedy, expressive facial animation, dynamic camera movement, dramatic reaction shots, strong escalation, precise comedic timing. The sneeze should build visibly and progressively before the final ridiculous release. The character takes the situation far too seriously. No dialogue, no subtitles, no text overlays, no logos, no recognizable brands, no copyrighted characters, no existing franchises, no celebrity likenesses, no gore, no horror.

Cinematic scene

Create a 15-second extremely funny cinematic 3D animated action comedy, 16:9 widescreen. Cozy realistic living room, polished high-end animation, expressive character acting, dynamic camera movement, rapid physical comedy, exaggerated but readable choreography, strong comedic timing. The entire sequence must revolve around ONE tiny relatable problem: a man drops one potato chip between the cushions of his sofa. MAIN CHARACTER: An ordinary adult man relaxing at home, casually eating chips while watching television. He becomes absurdly determined to retrieve one single chip. 0–3 seconds: The man relaxes on his sofa while eating potato chips. One chip slips from his fingers. It falls directly between the sofa cushions and disappears. He looks down. He casually reaches between the cushions. He can't reach it. 3–6 seconds: He removes one sofa cushion. Nothing. Removes another cushion. Still nothing. He reaches deep between the cushions. His entire arm disappears into the sofa. He struggles to reach the chip. 6–9 seconds: He grabs a small flashlight. He gets down on the floor and shines the flashlight underneath the sofa. Reveal the chip clearly visible underneath, just beyond his fingertips. He stretches toward it. Almost reaches it. The sofa shifts slightly. He slides farther underneath. 9–12 seconds: Now he is awkwardly wedged beneath the sofa, with his legs sticking out. He reaches for a broom and tries to push the chip toward himself. The broom accidentally pushes the chip even FARTHER away. He freezes. His expression changes from mild annoyance to intense determination. He crawls farther underneath. The sofa suddenly begins sliding forward. He grabs the sofa leg. The sofa continues moving. 12–14 seconds: The man finally emerges from underneath while accidentally dragging the entire sofa several feet across the room. The chip shoots out from underneath. He catches it triumphantly. He stands up holding the single chip like a priceless trophy. 14–15 seconds: He proudly eats the chip. CRUNCH. He looks toward the coffee table. Reveal: a large untouched bowl containing dozens of identical potato chips is sitting directly beside him. He looks at the bowl. Looks at the single chip he just fought for. Silence. CUT TO BLACK. STYLE: High-energy original 3D animation, cinematic action-comedy camera language, dynamic tracking shots, quick cuts, expressive facial reactions, exaggerated physical choreography, strong cause and effect. The escalation should become increasingly ridiculous but always remain easy to understand. The audience should clearly see the chip throughout the important moments. No dialogue required. No explosions, weapons, injuries, violence, horror, or random surreal events. Harmless physical comedy only. No copyrighted characters, celebrity likenesses, logos, subtitles, or watermarks.

Cinematic scene

Subject: A young, attractive East Asian female pop idol with long dark hair, wearing a sparkling sheer long-sleeve crop top, a black skirt, and dangling crystal earrings. Her demeanor is energetic, cheerful, and playful. Style: Cinematic backstage vlog style. Cool, polished tones with warm highlights, 35mm film grain, and realistic handheld camera shake. Camera & Framing Lighting: Bright indoor hallway lighting with soft overhead spotlights and warm reflections. Framing: Dynamic first-person (POV) selfie-cam angles, wide tracking shots, and close-ups as she interacts with the environment. Effects: Shallow depth of field and natural motion blur. Audio & Scene Dialogues 00:00 - 00:01: Close-up POV selfie shot of the idol smiling and tossing her hair back in a backstage hallway. Dialogue: "Hey guys, we're backstage right now..." 00:02 - 00:03: Rapid handheld pan down a long corridor with crew members walking in the background. Dialogue: "Look how long this hallway is." 00:04 - 00:05: Pointing at a dressing room door plaque bearing her name. Dialogue: "That's me! That's my name! ("HEER")" 00:06 - 00:06: Wide tracking shot of her walking quickly down the corridor. 00:07 - 00:08: Full-length outfit check in a hallway mirror while adjusting her skirt. Dialogue: "Okay, outfit check. How do I look?" 00:09 - 00:11: Picking up a snack bar from a backstage catering table and taking a bite directly to the camera. Dialogue: "Ooh, snack table. Don't mind if I do." 00:12 - 00:14: Waving goodbye, making a finger heart gesture, and turning to run toward the stage. Dialogue: "Wait, wait, wait! That's my cue. See you guys after the stage!" Realism: Photorealistic 8K rendering with natural fabric movement, accurate skin textures, realistic lighting reflections on clothing and hair, and organic hand-held camera motion.

At a glance

Is this model right for you?

Video must meet 360p–1080p, 24–60 FPS, and 1–30 Mbps boundaries, plus Kyeo's 95 MB file limit. Signed upload metadata proves file size, duration, resolution, and FPS, while verified audio duration directly determines pre-task authorization.

What it does best
A target-audio lip-redirection workflow for existing video, rather than a character-video generator built from a still image.
Who it is for
A good fit for replacing dubbing, multilingual talking-head clips, single-person explainers, and content that must retain the original movement and camera work.
Why use it on Kyeo AI
Kyeo verifies true video metadata and audio duration before credits are reserved and strictly separates parameters that are exclusive to each mode.

Key facts

Quickly evaluate whether this model fits your business use case.

Video formats
MP4 / MOV
Video bitrate
1–30 Mbps
Audio
Clean target vocal; 10 MB
Output duration
Follows the audio
Output
MP4 at 25 FPS; duration follows the target audio

Other names

The same model may have different names in official documentation, community discussions, and API integrations. This section brings them together for you.

Volcengine video lip sync
AI video lip sync
video dubbing lip synchronization

Common questions

These practical questions focus on the task, input conditions, and result requirements you should confirm before choosing.

How do I use Video Lip Sync?
How much does AI video lip sync cost?
How do I sync lips after dubbing a video?
How do Video Lip Sync Lite and Basic modes differ?
What videos does Video Lip Sync support?

Decision guide

Still deciding? Start with these key decision points.

1
Start with Lite mode for a front-facing subject

Lite mode fields fit straightforward footage with one front-facing person and simple looping alignment.

2
Use Basic mode for a complex single-person scene

Choose Basic mode when the workflow needs scene segmentation and speaker-recognition direction.

3
Switch to a driven-video model for a still image

This model requires video input. When only a still image is available, compare OmniHuman 1.5.

Popular comparisons

Compare common alternatives on the same task to clarify differences in inputs, controls, and cost.

How do the source-media requirements of Video Lip Sync and OmniHuman 1.5 differ?
When should I choose Lite mode or Basic mode?

Model comparison table

Not sure which model to choose? Compare the key differences between this model and its alternatives at a glance.

Source visual
Volcengine Video Lip Sync
Existing video + target audio
OmniHuman 1.5
Still image + target audio
Kling AI Avatar Standard
Still image + target audio

Real-world experience

Practical guidance based on public sources, current on-site limits, and representative tasks.

Lip sync is not a complete dubbing workflow

You still need a clean target track that you have permission to use, followed by human review of meaning, pacing, and visual synchronization.

Trusted media metadata supports both safety and pricing

Signed video metadata enforces the media contract, while signed audio duration drives pricing; neither can be self-reported by the client.

Capabilities

Video lip redirection

Preserve the source video's visuals while target audio drives mouth movement.

Lite looping alignment

Loop the video when audio is longer and optionally use reverse looping.

Complex-scene handling

Enable scene detection and speaker recognition in Basic mode.

Use cases

Multilingual talking-head video

Replace an explainer video's audio with another language and synchronize the mouth movement.

Course narration update

Keep the instructor's motion and visuals while replacing the narration track.

Marketing-video revision

Replace a short spoken segment without reshooting the main footage.

Prompt tips

Prepare clean vocal audio

Reduce music, reverberation, and overlapping speakers so the driving signal stays clear.

Choose a clear front-facing shot

Lite mode works best with one front-facing person, a visible mouth, and little occlusion.

Check audio and video lengths first

Choose looping, reverse looping, or a template start based on the mode to avoid unnatural repetition.

Why choose it

Retains the camera work and motion of existing video.
Low per-second rate with precise pre-task authorization.
Two modes cover simple and complex single-person scenes.
Signed evidence validates critical video metadata.

What to know first

Designed only for single-person scenes.
Requires both a video and target audio.
Kyeo limits video files to 95 MB.
Automated lip sync still needs human review for misalignment, expression, and semantic naturalness.

Adjustable settings

Quickly evaluate whether this model fits your business use case.

Service mode
Required
Parameter type: Select
Default: lite
Lite
Base
Vocal separation
Optional
Parameter type: Toggle
Default: off
Off
On
Scene detection and speaker recognition
Base mode only
Parameter type: Toggle
Default: off
Off
On
Loop video when audio is longer
Lite mode only
Parameter type: Toggle
Default: on
On
Off
Reverse loop
Lite mode only
Parameter type: Toggle
Default: off
Off
On
Template start time
Lite mode only
Parameter type: Number
Default: 0 seconds

Credit cost

8 credits per audio second

Kyeo calculates preauthorization at 8 credits per verified second of target audio and rounds the total up. Output duration follows the audio, and final settlement uses actual consumption after completion.

Credit-saving tip

Before generating images or videos in bulk, run an A/B test with the same input on this model and similar alternatives. Confirm the result first to avoid wasting credits.

Frequently asked questions

Related models

Still deciding? Take a quick look at these similar alternatives.

OmniHuman 1.5

The current OmniHuman 1.5 core path turns one image of a person, pet, or animated subject plus one audio clip into a driven video. Signed upload metadata verifies audio duration, which directly determines pre-task authorization.

AI video model
27 credits per audio second

Kling AI Avatar Standard

Workflow: The UI requires exactly 1 JPEG or PNG image and 1 MPEG, WAV, X-WAV, AAC, MP4, or OGG audio file. The image may be up to 10 MB; audio may be up to 100 MB and 5 minutes. The charge uses the signed audio duration at 8 credits per second and rounds up. A missing, invalid, or over-5-minute duration cannot be submitted.

AI video model
8 credits / audio second

Infinitalk

Infinitalk uses 1 image, 1 audio file no longer than 15 seconds, and a required prompt to generate a speaking-portrait video on Kyeo. It offers 480p or 720p plus optional `seed`; cost depends on audio duration and resolution rather than a fixed request price.

AI video model
480p: 3 credits/sec; 720p: 12 credits/sec

Sources

This page is based on vendor materials, model-family documentation, and Kyeo AI integration settings.

Source note

Explore Video Lip Sync: video plus audio input, Lite and Basic modes, 360p–1080p, 24–60 FPS, 8 credits per audio second, and parameter boundaries. Kyeo calculates preauthorization at 8 credits per verified second of target audio and rounds the total up. Output duration follows the audio, and final settlement uses actual consumption after completion.

Last updated: 2026-08-28
Volcengine video lip sync current interface notes
Integration

Used to check the input modes, visible controls, media limits, and availability of the version currently connected to this site. The page and workbench show the actual options.