Synthesia helps you create professional AI videos from text using virtual avatars and voiceovers.
Synthesia is a cloud-based platform that enables users to create AI-generated video content with lifelike avatars and voiceovers — without needing cameras, actors, or a traditional production studio.
In other words: you input text (or a script), select an avatar (or create one), choose style/voice/language, and generate a video that looks & sounds professional.
Between its features, workflow support (create → collaborate → publish), and enterprise-grade security, the platform positions itself as the “#1 AI video platform for business”.
Here are the major features of Synthesia, drawn from their website and documentation:

Company updates, employee communications, knowledge-base video content.
Quickly create onboarding, compliance, technical training videos in multiple languages.
Product demos, explainer videos, personalized outreach videos.
Create one base video and translate/dub it into many language versions for global audiences.
This tool is specifically for L&D departments and corporate communications teams needing to produce professional training videos with AI avatars. It eliminates the need for expensive studio time and actors, providing a much higher ROI for corporate video than traditional production.