Exclusive- Photo- Terrorists in Syria made a mass of their crimes(uploading video crime before the crime)

Terrorists in syria uploaded(20. 08. 2013) the video of their crimes in East Ghouta, Damascus and then blamed Syrian Govern for the attack at early time of 21. 08. 2013. If the crime had been made on 21. 08. 2013 then HOW did they upload the video on youtube page a day before the crime?
You can watch the video from here: http://youtu.be/cO8_eZcZkNE