Synthesia Review (2025): AI Videos With Virtual Presenters

Synthesia can replace professional video production for many business use cases, particularly informational, educational, and corporate content. It excels at presenter-led videos where conveying information clearly is the primary goal. For content requiring emotional performances, complex physical demonstrations, or highly creative visuals, traditional video production may still be preferable.

Many organizations use a hybrid approach, utilizing Synthesia for high-volume, information-dense content while reserving traditional production for flagship marketing materials or content requiring emotional connection.

Synthesia's AI avatars have reached an impressive level of realism, with natural facial movements, lip-syncing, and subtle expressions. Most viewers find them convincing, especially in a professional context. The avatars handle various languages with accurate lip movements and can incorporate some basic gestures and expressions.

That said, they still have limitations compared to human actors. The emotional range is somewhat constrained, and very close inspection may reveal subtle differences from human performances. For most business applications, however, the avatars are more than realistic enough to effectively convey information and maintain viewer engagement.

When using Synthesia, there are several important legal considerations to keep in mind:

• Consent: Creating custom avatars based on real people requires their explicit consent. Synthesia has strict policies about this.
• Disclosure: In many jurisdictions, it's considered best practice to disclose when AI-generated video is being used, particularly for marketing content.
• Content restrictions: Synthesia prohibits the creation of misleading, deceptive, or harmful content, including deepfakes of public figures or content that could be used for misinformation.
• Copyright: Users must own the rights to all materials uploaded to the platform, including scripts, images, and background media.

Synthesia provides clear terms of service that outline these restrictions, and the platform includes built-in safeguards against misuse.

Yes, one of Synthesia's most powerful features is the ability to create videos in languages you don't speak. You can write your script in one language and have it automatically translated into over 120 languages. The AI avatars will speak the translated script with appropriate lip movements and natural pronunciation.

For business-critical content, Synthesia recommends having the translated scripts reviewed by a native speaker to ensure accuracy before generating the final video. The platform also allows you to upload pre-translated scripts if you prefer to manage the translation process externally.

Synthesia is a cloud-based platform with minimal technical requirements. You'll need:

• A modern web browser (Chrome, Firefox, Safari, or Edge)
• A stable internet connection
• No special hardware is required – any computer capable of browsing the web should work well

For optimal experience when uploading custom media, Synthesia recommends:

• Images: JPG or PNG format, at least 1280×720 pixels
• Videos: MP4 format, 1080p resolution
• Audio: MP3 format, high quality

All video rendering is done on Synthesia's servers, so you don't need a powerful computer to create high-quality videos.