How do you keep characters consistent across an entire AI film?
Treat each character as a fixed asset: one approved character sheet that every shot is generated from, never a fresh text description. Then generate key frames as stills, check them against the sheet, and only animate approved frames, chaining shots inside a scene so each one starts where the last ended. Gulab's canvas keeps sheets, frames and clips connected, so you can trace any shot back to the reference it used.
Consistency is a pipeline, not a prompt
A short clip can survive a little drift. A film cannot: the audience notices when a jacket changes colour between cuts or a face gets rounder in act two. The reliable approach used by AI filmmakers is a fixed order of work: script, character and environment sheets, shot list, key frames, animation, edit. Each stage is approved before the next starts, and every later stage takes the earlier stage's outputs as inputs.
Step 1: character sheets
For every recurring character, generate a sheet on an Image node: head turnarounds, full body, and an expression row. Strong options for clean sheets are Nano Banana Pro ($0.180 per image), Seedream 5.0 Pro ($0.081 up to 1.5K), GPT Image 2.0 ($0.063) and FLUX 2 Pro ($0.054). Store each approved character as an Element: a reusable node holding several pictures of one subject, which you can copy between boards.
Step 2: environment sheets
Locations drift too. Generate each recurring set (the apartment, the train platform) once, with a couple of angles, and reuse them the same way. Use the Inspiration node to pull reference images from the web, or URL Images to extract images from a page, as mood and style input.
Step 3: key frames from references
For each shot, wire the character Element and the environment into a new Image node and describe only the action and framing. Use @-tags in the prompt so the model knows which reference is who; attached references show a red ring, brighter when tagged. Models with edit modes (FLUX 3 Edit takes up to 10 references, Ideogram 4.5 Edit, GPT Image 2.0 Edit, Nano Banana Pro edit) switch on automatically when a reference is connected.
Step 4: animate, and chain shots within a scene
Animate approved key frames with a Video node. Inside one continuous scene, the cleanest continuity comes from chaining: the last frame of shot N becomes the first frame of shot N+1, so nothing can teleport between cuts. Models with first and last frame control (Kling V3 Pro, Veo 3.1) let you pin both ends of a shot. Hailuo 03 Max Extend continues an existing clip, and Hailuo 03 Max Insert drops a new 5 to 13 second scene into the middle of a clip while keeping the rest of the footage.
Step 5: voice and lip sync
Keep voices consistent the same way as faces: clone once with Voice Clone, then reuse. Text to Speech supports ElevenLabs, MiniMax, Gemini TTS, Sarvam Bulbul and others; Dubbing translates speech while keeping the original voice; Voice Sync lip-syncs dialogue to video.
Step 6: assemble and upscale
Join clips with Concat and Crossfade, add score and effects from Music and Sound Effects nodes through Audio Mix, titles via Text Overlay, then Video Upscale (Topaz, $0.120 for 5 seconds at 1080p) and Export. Stitched and exported videos are saved, so they survive a reload and can feed lip sync or upscaling.
Prices are the per-generation costs listed on gulab.ai/pricing in October 2026 and can change; the pricing page is always the live source.
A checklist for every shot
- Does the face match the sheet at a glance, side by side?
- Same outfit, hair, props and colours as the previous shot in the scene?
- Does motion stay clean through the middle and end of the clip, not just the first frame?
- Does the clip end in a state the next shot can start from?
Re-generate a still before you re-generate a video: image passes cost cents, video passes cost more.
Pricing
Gulab bills per generation from a credit balance. Plans are Solo Producer ($10/month, ₹799), AI Era Creator ($20/month, ₹1,599) and Full Studio ($50/month, ₹3,999). Every plan includes every model, with no model-gating. Unused credits from a monthly plan roll over for up to 60 days, and top-up credits (available to subscribers) last until used.
FAQ
What is the best way to keep a character consistent in AI video?
Generate an approved character sheet once and use it as an image reference for every key frame, then animate those key frames with image-to-video. Never rely on text alone to describe a recurring character.
What is an Element in Gulab?
An Element is a reusable node that holds several pictures of one subject, such as a character or prop. You can wire it into image and video nodes and copy it between boards.
How do I stop characters changing between cuts in the same scene?
Chain the shots: use the last frame of one clip as the first frame of the next. Models with first and last frame control, such as Kling V3 Pro and Veo 3.1, let you pin both ends.
Can I keep the same voice for a character?
Yes. Clone the voice once with the Voice Clone node and reuse it in Text to Speech for every line, then lip-sync with Voice Sync.
Is there a limit on how long the film can be?
Individual generations have model limits (most video models produce clips of a few seconds each), but the canvas has no film-length limit: you assemble as many clips as you need with Concat and Export.