seven second delay?

[rogerkirk]

Garrett Wollman wrote:
>RTP (the protocol used for real-time media over the Internet) has
>always done this.  It has to, because the audio and video are sent as
>separate data streams, and you couldn't get lip-sync without a common
>clock reference.  

While vacationing in Canada (over the 4th), I notice many instances of badly-synced audio/video.  Sometimes a delay of a 1/2 second or more.  Even my non-technical spouse (who usually ignores such things)commented.