How to Create AI Characters That Stay Consistent in Video
- kylixie
- May 1, 2025
- 5 min read
Making videos with the same AI character is getting easier. This guide looks at three good ways to do it. We will use examples to show you how. We can also add talking to the videos with lip sync. These methods help you get the same face or person in video clips.
Two ways use an image to start and then make a video from it. The third way creates video straight from text. You can compare them to find what works for you. They are all pretty simple.
Method 1: Use One Picture to Start
This is the simplest method. It works using just one image. You can do this on platforms like Replicate.
Steps Using One Image
Log in to the platform (like Replicate, often needs a GitHub account).
Find the right AI model. (For example, search for "Flux PID").
Upload the picture of your character.
Write a simple description of what you want the character to do (a prompt). For example, "a wizard casting a spell".
Pick your settings, like video shape (aspect ratio). The ready-made settings often work well.
Choose how many videos to make at once and the file type (like PNG is good for images used this way).
Start the process.
The tool will make a video from your picture and prompt. This works well for starting with a single photo.
Method 2: Train an AI Model with Many Pictures
This method uses more pictures to teach the AI what your character looks like. You also use platforms like Replicate for this.
Steps to Train a Model
On the platform, find a model training tool. (For example, search for "Osris Flux Dev Lora Trainer").
Give your trained model a name.
You need about 10 or more photos of the character. Use different photos with good light. Try to use pictures taken around the same time so hair and other details are the same.
Put your pictures into a zip file.
Upload the zip file to the training tool.
Choose a word or phrase that will stand for your character in prompts. This is called a trigger word.
You can add simple text about the photos (autocaptions).
Adjust settings like the lower rank if needed (higher numbers can help with complex details).
Start the training. This takes some time and costs a bit, but you only do it once.
Once your model is trained, you can use it any time at a low cost.
How to Use Your Trained Model
Go back to the model or find it in your dashboard.
Write a prompt using your trigger word. For example, "Kevin is a wizard casting a spell" if "Kevin" is your trigger word.
Choose settings like video shape and number of results.
Pick the file type (like PNG).
Run the model.
This method helps create images where the face looks more like the trained character. Be careful if your prompt has other people in it, as the AI might mix faces sometimes.
Want to make your AI image generation and video creation even faster and more controlled? Check out the Midjourney Automation Suite from TitanXT. It can streamline your workflow for generating consistent characters and scenes.
Getting Pictures for Training Another Character
If you want to train a model for a fantasy character or something not real, here’s a way to get pictures:
Use an AI image tool to make a character sheet image. This shows the character from different sides.
Describe the character's look and clothes in your prompt.
You might need to try a few times to get a good image.
Cut out different parts of the image. Get headshots from different angles, maybe some body shots.
If the character is the same on both sides, you can flip a picture to get another angle.
Use these cut-out pictures (around 10 or more) for training the model, just like with real photos.
automate and enhance your Midjourney process? The Midjourney Automation Suite from TitanXT can help manage and generate images more efficiently, which is perfect for consistent character creation and testing.
Turning Images into Videos
Once you have your images from Method 1 or 2, you need a tool to make them move.
Steps Using an Image-to-Video Tool
Tools like Cling, Runway, Minx, or Luma Labs can do this. Here are the general steps:
Go to the image-to-video part of the tool.
Upload the image you want to animate.
You can leave the prompt empty and let the tool decide the movement, or you can type what you want to happen. For example, "Vikings walk into battle".
You can often change camera movement settings if you want.
Start the generation.
This often takes several minutes. Sometimes you need to try a few times or change the prompt to get the result you want.
Method 3: Train an AI Model with Videos
Some advanced tools let you train a model using videos of your character. This can make the results look very real. Cling has a feature for this.
Steps to Train with Videos
This usually requires a paid plan on the platform.
Go to the custom model training section (like "AI custom model" in Cling).
Upload your first video. The tool will ask for a front view, close-up, with a flat face and good light. No blurry parts or text on screen.
Then upload 10 to 30 more videos of the same person. Each should be short (5-15 seconds).
Have the character do different things and make different faces. Show close, medium, and full shots.
Record these on the same day if possible so features like hair look the same.
Check video settings like HDR on iPhones. You might need to turn off HDR before recording or change the videos before uploading.
Upload all the videos. The tool will check them for quality.
Submit for training. This takes longer than image training, maybe a couple of hours. It uses a lot of credits.
Once the training is done, you can use your video-trained model.
How to Use Your Video-Trained Model
Select your trained model (your face reference).
Write a prompt. For example, "Kevin is casually walking away from an explosion" or "Closeup shot Kevin the Viking charge into battle".
Generate the video.
This can make videos that look a lot like you or the character you trained.
Adding Lip Sync
Some video tools, like Cling, have a lip sync feature built-in. You can make your AI character talk.
How to Add Lip Sync
Generate your video first.
Find the lip sync option.
Use text-to-speech to create the voice or upload your own audio file.
Drag the audio onto the video.
Click the lip sync button.
The tool will make the character's mouth move to match the sound.
Tools to Help Your AI Creation
Getting AI images just right for consistent characters takes work. Tools that help manage and automate parts of the process can be very useful. The Midjourney Automation Suite from TitanXT offers features to help you create and organize your Midjourney images more effectively. This can speed up getting the right look for your consistent video characters.
Conclusion
You now have a few good ways to create videos with characters that stay consistent. You can start with just one picture, train a model with many pictures for better likeness, or even use videos to train a model for very realistic results. Combine these with image-to-video tools and features like lip sync to bring your characters to life.
Choose the method that fits what you need and the tools you have access to. Good luck creating!
Comments