[media] Correct and add some parameter descriptions

>From 70d02ce19f64fae4ceee563501e8462a76e17b91 Mon Sep 17 00:00:00 2001

Signed-off-by: Hans Petter Selasky <hselasky@c2i.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed