I am not able to upload media files using ‘Uploader’

Uploader supports the following file formats:

Images: jpg, jpeg, png, gif.

Videos: 3g2, 3gp, asf, Avi, Flv, m2ts, m4v, m4v, MOV, MPEG, mpeg4, mpg, ts, vob, WMV, mp4, webm.

Audios: mp3, Ogg, m4a, wav.