in the first video we see him in many roles.

in the second video, i think it's Khaled Abou Saleh, and if it's him (video from February 2012, 4 months ago) (please tell me if I delirium too), he could have lose a few pounds and grow a beard. also the street is empty, with apparently the two bodies of the two journalists Marie Colvin and French reporter Remi Ochlik.

since in February 2012 we did not really know who he was. and it was apparently the first on the scene.

you can see the house is not in ruins, it looks like she exploded from the inside and debris are outside. and this is the only house that was hit

also Khaled Abou Saleh is against Al-Assad he repeated on July 6 in Paris at the conference of "Friends" of the Syrian people

so did he kill them ?

that's my opinion. I do not know where is the justice with this case.
*sorry if I delirium*

originals here :
http://www.youtube.com/watch?v=nSV96m7ZqbI
http://www.liveleak.com/view?i=133_1329912312