IPTV Multicast Pixelation

i have an issue with IPTV service, which is Pixelation on IPTV while running any channel. i have IPTV headend behind the cisco ASASM, flodding multicast streams of all channels to RP which the cisco 6807 Core switch. i run IP PIM Sparse mode on core and all other edges which are connected to it through OSPF point-to-point. please advice.
Thank You.
Eng. Mohamed Wahba

Hello Mohamed

Thanks for sharing your topology with us. We would love to help you out, but we need a clearer understanding of the question you are asking. Please clarify what it is you would like us to help you with.