Amateur video posted on Sunday purports to show Syrian rebels loading and firing mortars, and a government check point being shelled in rural Hama.
The video cannot be independently verified.
Another video purports to show a government fighter jet shelling an area outside of Damascus.
Commotion as people gather in what is said to be the aftermath of an "explosive barrels airstrike" in Damascus.
Locals are seen helping the injured.
Syria's civil war has killed over 140,000 people since it started three years ago, with no end in sight.