It’s annoying that Apple doesn’t include all videos in their “All Videos” list for WWDC. For example some slightly older videos like @ctp’s “Building Modern Frameworks” (2014 #416) are still definitive but you have to find a direct link to assets. (https://devstreaming-cdn.apple.com/videos/wwdc/2014/416xxuit620s53g/416/416_building_modern_frameworks.pdf)