[linux-dvb] relating PTS to 'real' time

Robert Schlabbach robert_s at gmx.net
Tue Aug 23 18:47:54 CEST 2005

From: "Dr. Werner Fink" <werner at suse.de>
> On Tue, Aug 23, 2005 at 04:54:49PM +0200, Rene Bartsch wrote:
> > Which measurement is used for PTS/PTR? Nanoseconds?
> Normally ticks within a 90kHz clock are used for that.

>From ITU-T H.222.0:

| Time stamps are generally in units of 90 kHz, but the System Clock
| Reference (SCR), the Program Clock Reference (PCR) and the optional
| Elementary Stream Clock Reference (ESCR) have extensions with a
| resolution of 27 MHz.

Robert Schlabbach
e-mail: robert_s at gmx.net
Berlin, Germany

More information about the linux-dvb mailing list