[FFmpeg-devel] [PATCH] rtpdec: Emit timestamps for packets before the first RTCP packet, too

Luca Barbato lu_zero
Tue Dec 28 02:39:32 CET 2010

On 12/28/2010 01:55 AM, Josh Allmann wrote:
> Just a small comment: RTP timestamps do not necessarily start from
> zero (RFC 3550, section 5.1: "The initial value of the timestamp
> SHOULD be random") and the RTCP wallclock is used for syncing between
> streams that otherwise have different starting timestamps.

"0 is a perfectly random number" when random doesn't come with pretence
of security of any kind.

I always read those SHOULD as "pick any value you are comfy with" when
sending and expect any value to come up on the receiving side.

Anyway it should be unrelated to this patch since the aim is to keep the
timestamp locally uniform if I read it correctly.



Luca Barbato

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