I watched the Pegasus launch on the KSC video feed via Real Player and also on SpaceflightNow's Livestream connection. There wasn't much to see because the launch was at night. I saw Pegasus fall away from the plane and disappear. After that, it was all diagrams and commentary. The launch went well.
Real Player's video feed stayed mostly real-time with an occasional one or two second pause while the plane was on the ground, but got sporadic after the plane took off. There may have been a bandwidth problem at my end. The countdown clocks ran smoothly throughout.
The Livestream webcast stayed current. It included live commentary and flightpath diagrams, along with a short animation sequence. But it waited until shortly before takeoff before it came online.
There were no diagrams or commentary on the Real Player feed. There was a flightpath diagram on a separate channel, but it didn't make much sense without commentary, and I had no desire to switch to it during launch operations.
CRUD = Contamination Resulting in Undesirable Deposits.
CRAPP = Contamination Resulting in Additional Partial Pressure.