Error Checking and Validation

(x)
MP4 (Source) 1920 x 1080 51.78 MB
MP4 (360p) 640 x 360 27.32 MB
MP4 (480p) 854 x 480 43.97 MB
MP4 (720p) 1280 x 720 62.67 MB
MP4 (1080p) 1920 x 1080 79.19 MB