Uh, no...
If you research the literature on SETI and signals, you'll see that repetitive frame-based datasets such as video are quite easy to translate (regular repetition of frame and evolving content).
But, in a way, this is irrelevant - the "Lighthouses" of our civilisations are military radars and comms transmitters which pump mega- to giga-Watt power in narrow beams with tight frequency control and sophisticated cycling/framing/frequency scanning/chirping. If we received a slice of one of these, we'd KNOW it was manufactured.