Hedra-AI lip-sync video generation tool, which can generate 30 seconds of video for free at a time

What is Hedra

Hedra is an AI lip-sync video generation tool launched by the Digital Creation Lab, a research team from Stanford University. It focuses on applying artificial intelligence technology to the generation of character videos. Users can upload photos and voices of any person, and Hedra will generate dynamic videos based on these inputs, in which the character’s lip shape, expression, and posture are perfectly synchronized with the voice content. Hedra supports text and image video generation. It is currently in free public beta, providing unlimited video generation capabilities. A single video can be up to 30 seconds long (open preview version), and every 60 seconds of input can generate 90 seconds of video.

Key features of Hedra

• Video generation from text and images : One of Hedra’s core features is the ability to convert user text and image input into dynamic videos. Users upload a photo of a person and a corresponding voice file, and Hedra’s AI technology analyzes the rhythm, pitch, and intensity of the voice, and then precisely adjusts the lip shape and facial expressions of the person in the video to match the rhythm and emotion of the voice. This makes the generated video look very natural, as if the person is speaking or singing in real time.
• Unlimited video generation : Hedra provides unlimited video generation capabilities during the open preview period, allowing users to create longer and more complex video content. Although the maximum video length of a single video is currently limited to 30 seconds, this is enough for producing many types of short video content, such as social media posts, advertisements, music videos, etc.
• High-efficiency video production : Hedra’s algorithm optimizes the video generation process and improves production efficiency. Users input 60 seconds of voice and text, and Hedra can generate a 90-second video. This efficiency improvement is very useful for users who need to quickly produce a large amount of video content.
• Expression Synchronization : Hedra’s AI technology ensures that the expressions and lip shapes of people in the video are precisely synchronized with the input voice content, including basic pronunciation synchronization as well as more subtle expression changes such as smiling, frowning or surprise, thereby conveying richer emotions and context.
• Diverse character support : Hedra is not limited to generating videos of a single character, but supports the creation of diverse characters (humans, anime, animals, stone statues, etc.), each of which can have unique expressions, movements, and voices.
• Virtual World Building : Hedra’s planned Worlds feature will be an innovative step forward, allowing users to build and explore their own virtual worlds. These worlds can contain multiple characters, environments, and interactive elements, providing endless possibilities for user storytelling.
• Creative Control : Hedra provides a highly creative control panel where users can adjust the character’s appearance, movement, voice and environment settings. Users can precisely realize their creative vision, whether they are producing educational videos, commercials or works of art.
• Cross-platform use : Hedra is designed with user convenience in mind and supports use on multiple devices, including desktop computers and mobile devices. This cross-platform support allows users to create anywhere, anytime, without device restrictions.

How to use Hedra

1. Visit Hedra’s official website ( hedra.com ), click Try Beta and then log in/register
2. After logging in successfully, import audio or generate audio in the Audio section and select the tone
3. Then upload the character picture in the Character column or enter the prompt word to generate the character
4. Finally, click Generate Video in the Video column and wait for the video to be generated.
5. The generated video can be downloaded or shared by clicking

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