Parameters:

q (query request)

media : (media type filtering)
M : MP3 Audio
L : Legacy media
Y : Youtube archived/wayback

dur (duration) :
S : Short duration (<5 minutes)
M : Medium duration (5-20 minutes)
L : Long duration (+20 minutes)
F : Feature duration (+45 minutes)

sort (sorting) :
short : Sort shorted duration first
long : Sort longest duration first
old : Sort oldest first
new : Sort newest first