[Mp4-tech] sequence parameter set VS. picture parameter set

[Ye-Kui.Wang nokia.com]

Hi Guogang,
Sequence parameter set contains those parameters that change at most
once per coded video sequence (a group of pictures leading by an IDR
picture), while picture parameter set contains those parameters that may
change once per picture but typically less frequently. 
BR, YK
________________________________
	From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of ext Guogang Hua
	Sent: 10 July, 2005 20:00
	To: mp4-tech lists.mpegif.org
	Subject: [Mp4-tech] sequence parameter set VS. picture parameter
set
	Dear all,
	I am a newbie in MPEG4, and I am reading the Recommendation.
	Here I have a question, what's the difference between sequence
parameter set  and picture parameter set? 
	sequence parameter set are the parameters of P frames, and
picture parameter set are parameters of I frames, is that right?
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