View Single Post
Old 5th June 2008, 12:21   #1203  |  Link
drmpeg
Registered User
 
Join Date: Jan 2003
Location: Silicon Valley
Posts: 455
Quote:
Originally Posted by CiNcH View Post
That was actually clear with your first post already .

PCR within TS for example consists of 42 bit, divided into 33 bits PCR_base (90 khz precision) and 9 bit PCR_extension (extended 27 MHz precision). What about ATS? Need some more info about those 30 bits..
It's a 30 bit unsigned integer representing the 27 MHz clock. In other words, it's the lower 30 bits of the 27 MHz normalized PCR. By 27 MHz normalized PCR, I mean:

(PCR_base * 300) + PCR_ext

If you look at the arrival_time_stamp of a packet containing a PCR, you'll see that they are very close to the same value.

Ron
__________________
HD MPEG-2 Test Patterns http://www.w6rz.net
drmpeg is offline   Reply With Quote