only shows low res video's both mp4 and webm up to 360p including extremely small flv 144p and 240p
I understand 480p and 1080p are dash only but 720p should be available in both mp4 and webm (I tested it on new videos available in full HD)?
I'm running FF57 x64 on 7 x64

edit
I enabled DASH to see if google changed something and 720p was DASH only
sadly even with DASH enabled no HD video is available only up to 480p and I tested it on a 2k video