Here's 1 minute 95MBytes file of the ITV HD mux.
It contains ITV HD and Brit Shorts TV and a bunch of radio channels.
If you put the TS file through tsmuxerGUI you'll see the audio delay of the ITV HD AC3 stream.
http://www.mediafire.com/download.php?yujkelygjvt
[Note: I edited this excerpt from a 22Gbyte TS file of the complete multiplex.
I haven't been able to extract the video from this excerpt].
Here's a picture:
I've been putting the complete mux through tsmuxerGUI to convert the H222 to H264.
I also set the AC3 audio delay to something like -870ms.
The video and audio is approximately in sync in the created m2ts file but could be out by +/-100ms.
Is there a way of finding out the time difference between the video and audio streams ?