Ovi I2V: Image-to-Video-and-Audio Generation Model
Edited by Segmind Team on October 22, 2025.
What is Ovi I2V?
Ovi I2V is an advanced AI model, developed by Character AI, which can transform simple text prompts or text-image inputs into high-definition videos perfectly synchronized with audio. It generates 5-second clips at 24 frames per second, and also supports multiple aspect ratios, i.e., 9:16, 16:9, and 1:1, making it ideal for various creative needs. It produces cohesive, professional-level videos based on simple inputs (having clear descriptions) by blending visual and audio generation seamlessly.
Key Features of Ovi I2V
- •It can generate synchronized video and audio from simple text prompts
- •It supports multiple aspect ratios - 9:16, 16:9, 1:1
- •It can produce 5-second duration clips at 24 frames per second
- •It has custom audio control using
<AUDCAP>tags - •It provides flexible input options - text-only or text+image
- •It has the option for comprehensive negative prompting for video and audio
- •It supports seed control for reproducible results
Best Use Cases
- •Content Creation: It is optimal for creating short-form video content for social media
- •Educational Content: It can be used to produce animated explanations and tutorials
- •Marketing: It can generate dynamic product demonstrations and ads
- •Storytelling: It can design brief narrative scenes with synchronized audio
- •Prototyping: It is perfect for quick visualization of creative concepts
- •Digital Art: It supports multimedia art installations
Prompt Tips
Prompt Format Our prompts use special tags to control speech and audio:
Speech: <S>Your speech content here<E> - Text enclosed in these tags will be converted to speech Audio Description: <AUDCAP>Audio description here<ENDAUDCAP> - Describes the audio or sound effects present in the video
Quick Start with GPT For easy prompt creation, try this approach:
- •Take any example of the CSV files from above
- •Tell GPT to modify the speeches enclosed between all the pairs of <S> <E>, based on a theme such as Human fighting against AI
- •GPT will randomly modify all the speeches based on your requested theme.
- •Use the modified prompt with Ovi I2V
- •Example: The theme “AI is taking over the world” produces speeches like: - <S>AI declares: humans obsolete now.<E> - <S>Machines rise; humans will fall.<E> - <S>We fight back with courage.<E>
FAQs
How do I ensure audio-visual synchronization?
Use the <AUDCAP> tags to clearly define audio elements that go with the visual description; the audio descriptions must align with the visual action timeline.
What's the optimal prompt structure?
Start with visual elements, followed by action descriptions, then add audio instructions within <AUDCAP> tags. Example: "A teacher explains quantum physics with enthusiasm, using a chalkboard filled with equations. <AUDCAP> Engaging lecture voice with background chatter of a classroom.<ENDAUDCAP>"
Can I control the video style? Yes, you can get the desired video style through detailed prompting and negative prompts. Use the video_negative_prompt parameter to avoid unwanted visual effects and maintain your desired aesthetic.
What makes Ovi I2V different from other text-to-video models? Ovi I2V's synchronized audio-visual generation capabilities make it an ideal model for creating coherent multimedia content with synchronized sound and visuals in a single generation step.
How can I achieve consistent results? Use the seed parameter to maintain consistency across generations. Lower values (1-100) are ideal for creative exploration, while higher values help in testing and reproduction of specific outputs.