Question: I'm looking for a way to build custom video applications, can you find a tool that supports that?

If you want to write your own video apps, Remotion is a great option. It lets you generate MP4 video programmatically with React, using CSS, SVG and WebGL, with real-time video rendering with audio, fast editing and a range of packages including a core API, bundler, player and more. That's great for developers and businesses that want to generate video programmatically at scale with flexibility.

Another interesting option is Clipara, a video platform geared for modern brands that want to reach customers with short-form video. You can build custom multi-video experiences without coding with interactive video embeds, a video library and campaign creation. Clipara also offers analytics to track engagement and conversion rates, so it's a good option for businesses looking to improve their video marketing.

For AI-generated video, Visla is a full-featured option. It can turn text, scripts and audio into professionally produced videos with AI. You can record from a variety of sources, add custom elements like CTAs and voiceovers, and collaborate on video projects. It's geared for enterprise teams in marketing, HR and other areas where video production needs to be efficient but still high quality.

Last, DeepBrain AI offers a powerful AI video generator that can turn text prompts into videos. It's got photorealistic AI avatars, natural text-to-speech voices and customizable elements. It's flexible, with support for multiple languages and use cases like education and marketing, so it's a good option for businesses that want to create engaging video content without a lot of hassle.