As of now most if not all other Youtube downloader
are broken unable to offer 4K, FLV, 480 MP4 and 1080p Full-HD downloads as Youtube has adopted a new streaming format for these qualities which uses separate video and audio streams which require muxing to get the final video with audio. The
current version of Easy Youtube Video Downloader Express (7.16+)
DOES allow 1080p downloads by doing these resource heavy "muxing operation" on our powerful servers. Support for 4K, flv and 480p downloads
will come in a future version.
You can read
for more information and future updates.