CVS vs GOP

rudyb · 15th April 2015, 13:39

What is the difference in terminologies Coded Video Sequence (CVS) vs GOP?
each CVS can be independently decoded from another CVS. And the same statement is also true for Closed-GOP.
So, can we say that CVS is the same thing as Closed-GOP?
Because they are both a set of pictures (starting with a key frame), and they both have a sequence of pictures.
But why do we have two terminology serving the same purpose? I am sure there has to be some differences!
Are there any differences in respect to their non-VLC NAL units (PPS/SPS/VPS), or some other terms?

foxyshadis · 17th April 2015, 14:19

No. A coded video sequence is a sequence of video for which a single set of PPS/SPS/VPS applies, that's all; a CVS can be a single GOP or a thousand GOPs, as long as all have the same parameters. Coded video sequence typically rolls over when video is spliced.

15th April 2015, 13:39	#1 \| Link
rudyb Registered User Join Date: Aug 2014 Posts: 29	CVS vs GOP What is the difference in terminologies Coded Video Sequence (CVS) vs GOP? each CVS can be independently decoded from another CVS. And the same statement is also true for Closed-GOP. So, can we say that CVS is the same thing as Closed-GOP? Because they are both a set of pictures (starting with a key frame), and they both have a sequence of pictures. But why do we have two terminology serving the same purpose? I am sure there has to be some differences! Are there any differences in respect to their non-VLC NAL units (PPS/SPS/VPS), or some other terms?

17th April 2015, 14:19	#2 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,559	No. A coded video sequence is a sequence of video for which a single set of PPS/SPS/VPS applies, that's all; a CVS can be a single GOP or a thousand GOPs, as long as all have the same parameters. Coded video sequence typically rolls over when video is spliced.