Open Source Kotlin Video Converters

ZenConverter is a free, open-source Android file converter that processes documents, media, and other file types directly on the device. It supports video conversion, compression, trimming, merging, and audio extraction using FFmpeg. Users can convert images, create PDFs, manage document files, and transform subtitles or font formats. Its PDF tools support merging, compression, text extraction, and password protection. AI-powered image upscaling and experimental frame interpolation provide additional media enhancement options. Batch processing allows different conversion tasks to run through a managed queue. Built with Kotlin and Jetpack Compose, the application offers Material You theming and multilingual support. All conversion operations remain local without mandatory accounts, advertisements, or cloud uploads.