LLPlayer

Here is a completely original and concise introductory description focusing on the features of the LLPlayer (Language Learning Player) project:
 LLPlayer: An intelligent media player that transforms language learning into a cinematic experience.

Breaking free from the limitations of classic video players, LLPlayer is a new generation, open-source, AI-powered media player designed from the ground up for foreign language learners. Developed for those seeking a learning environment focused not just on watching videos but also on understanding what they watch, this tool offers a fluent language acquisition process.
 Key Features:

    Dual Subtitles: Allows you to view two different languages ​​(for example, your native language and the language you want to learn) on screen simultaneously. Whether text-based or image-based (bitmap), subtitles never overlap; their size and position can be completely customized to your preference.

    AI-Powered Real-Time Subtitle Generation (ASR): Thanks to the OpenAI Whisper platform, you can generate subtitles in seconds, in real time, from any audio or video file (or online sources like YouTube) that doesn't have subtitles.

    Context-Safe Live Translation: Integrated with powerful translation engines like Google, DeepL, OpenAI, Claude, or Ollama, the system translates sentences not word for word, but with high accuracy by considering the context of the sentence.

    Instant OCR (Optical Character Recognition) for Bitmap Subtitles: Uses Tesseract and Microsoft OCR engines to instantly convert embedded/image-format subtitles—which traditional players cannot read—into end-to-end text.

    One-Click Word Meaning and Dictionary Search: Simply click on a word you get stuck on while the subtitles are scrolling. A window will instantly open showing you the word's meaning or allowing you to search for it on your preferred dictionary website.

    Comprehensive Subtitle Sidebar: List all subtitles within the video, browse through them as you wish, and instantly jump to the desired scene by performing keyword searches.

    Online Video Integration (yt-dlp): You can play videos from YouTube and similar platforms directly through the application, and seamlessly benefit from AI subtitle and translation features even for online content.

    Completely Free and Customizable: Developed with C# / WPF and offered under the GPL license, this tool is completely open source. With dark theme support, fully customizable shortcuts, and compatibility with browser extensions (Yomitan, etc.), it's entirely under your control.

If you want to move beyond being a passive viewer while watching your favorite series, movies, or documentaries and embark on an active vocabulary-building adventure, LLPlayer promises an experience far beyond traditional players.