What's a good Android app for archiving online lectures and research videos for offline viewing?

I've been exploring different methods for archiving online lectures and research videos for offline access, and Download Hub presents an interesting implementation of video downloading. The algorithm is surprisingly elegant in its ability to grab content from various sources. As someone who often needs to review material while traveling or in areas with limited connectivity, this app proves invaluable. It’s particularly helpful for managing citations and creating a personal research library. The well-researched design allows for easy organization of downloaded files, which is pedagogically sound for students as well. It's also cross-platform compatible, which is a huge bonus when working across multiple devices. I appreciate the novel approach to an old problem, making research and learning more accessible.