Okay, as long as it's a case of unrealistic expectations, I can breathe easier. This would be a great thing for the OS to pick up on, though. Presumably the OS has some idea of the current latency of both the video playback and audio, and could sync them. Oh well.

I switched over to HFP and the audio quality was unacceptable, and there were many more stutters/drop-outs than A2DP. So, I guess I'll just bring along a pair of wired headphones for video. Wish I'd realized this before I bought the headphones, though.