[streaming] Re: About discontinuity_indicator in Adaptation field flag

Christophe Massiot massiot at via.ecp.fr
Mon Jan 29 11:44:16 CET 2007


On Fri, Jan 26, 2007, Anoop Pudhukode wrote:

>    I did that this is what I get. It shows
> discontinuty received this but I believe it is about
> the Continuity Counter and not discontinuity_bit that
> we received. This is what I gathered from a search
> that I did few days back. Let me know if the following
> message indicates something that I have missed.

No, the discontinuities are discontinuities in the continuity counter.
VLC should print "discontinuity indicator (pid=%d)" when it finds a
discontinuity flagged in the stream. However, the bad news is that we
take no action after such indicator, so the clock is not reset. In
addition the clock is not reset when you restart the stream after a
pause and is simply skewed very slowly (the skew factor can be changed
with --cr-average).

The simplest way to achieve the desired behavior would be to set the
first PCR after resume to 0 (or any arbitrarily far from reality value).
But MPEG-wise it is a kludge and the resulting stream wouldn't be
compliant.

-- 
Christophe Massiot.

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