Show HN: I built auto-captions with face-tracking reframe for vertical video (captionly.dev)

A new platform called Captionly has been launched to streamline the process of adding auto-captions to vertical videos, a tool designed specifically for content creators. The process involves three easy steps: uploading a video, leveraging AI for transcription and highlight generation, and delivering an optimized captioned MP4 file in mere seconds. The platform uses OpenAI's Whisper for transcription and GPT for content highlighting, providing capabilities in over 99 languages with auto-translation features. This innovation is significant for the AI/ML community as it simplifies content creation for video platforms like TikTok and Instagram, where engagement with captioned content is crucial. Captionly operates on a pay-per-use model, making it accessible for both occasional and frequent users without requiring lengthy subscriptions. Creators can choose from various caption styles tailored by fellow creators, ensuring the aesthetic matches their brand. This approach not only enhances user experience but also emphasizes efficiency, with the platform aiming to empower creators to produce engaging content that is ready for immediate distribution.