Media Formats
Here you can check what the supported media formats are for the Dropbox and OneDrive playlists
gif : image/gif
jpg : image/jpeg
jpeg : image/jpeg
png : image/png
webm : video/webm
mkv : video/x-mkv
mp3 : audio/mpeg
avi : video/x-msvideo
flv : video/x-flv
xls : application/pdf/xls
xlsx : application/pdf/xls
ppt : application/pdf/ppt
pps : application/pdf/ppt
pptx : application/pdf/ppt
doc : application/pdf/doc
pdf : application/pdf
wav : audio/x-wav
bmp : image/bmp
mpg : video/mpeg
mpeg : video/mpeg
mpv : video/mpeg
mp4 : video/mp4
m4v : video/mp4
mov : video/quicktime
docx : application/pdf/doc
3gp : video/3gpp