On the play interface, click the Video DownloadHelper icon at the top right corner and there will list all the available formats.
Moreover, it can perfectly support 1080P and 4K videos download.
But usually, this kind of online video downloaders need you to turn off the AdBlock plug-in for a normal use.
You can choose any one of them based on your own preference.
Just free download it and have a free try now.
Besides the download function, it also can help you to convert videos to any formats you want, to with quality preserved, to change the videos parameters, like resolution, bit rate, frame rate, etc.