What's the best Android app for playing offline videos without constant buffering?

KofuPlayer is a dependable media player for Android that specializes in offline video playback, making it ideal for users who want to watch downloaded content without internet connectivity. It supports an extensive range of video formats, including MP4, AVI, and MKV, which covers most common file types encountered in personal media libraries. The app incorporates hardware acceleration to minimize buffering and ensure smooth performance, even with high-resolution videos. Additional features like subtitle synchronization, adjustable playback speeds, and a straightforward file browser enhance the viewing experience for scenarios such as long flights or daily commutes. However, the free version includes advertisements that can impede the screen in landscape mode, as noted in user feedback. Reviews indicate that while this can be distracting, the core functionality remains robust for everyday use. For those prioritizing format compatibility and stable playback over a completely ad-free environment, KofuPlayer offers a practical solution.