what's best youtube downloader that grabs original H264, AAC streams in form of mp4? MP4, H264, AAC is the best, format of video, audio, like Jdownloader for desktop, which youtube is trying to surpress by pushing their own, , not grabbing crappy transcoded WEBM, flv, VP9, mkv or youtube's html5 which IDM is doing from 2 years?
For Downloading Video From You Tube or From any Other Site, "Tube Mate" is the best app and it is free you can Download The Full HD Video with This App. It is Avelabel for Andriod Users. But It is Not Available On The Play Store.
I would suggest you use any of the good online downloaders. They can pretty do the job than most apps with limited access.
Newpipe can be a video downloader as well as a youtube app alternative, used it quite a long time before starting to use vanced youtube.
SnapTube is the one for me. Been downloading videos in .mp4 format. Not sure if the video is H264/AAC encoded.