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Annex 5 to Doc. AVC-106R
Annex 5 to Doc. AVC-106R

H.26X REQUIREMENTS

	Status notation

(A)  Agreed
(P)  Preferable
(M)  Mandatory
(T)  Target
(FS) Implementation method is for further study

1. BIT RATE

	up to several 10s Mbit/s					(A)

2. CODEC SOURCE FORMAT

	QCIF/CIF								(A)
	"601" class (see Annex 3 of this report)			(FS)
	EDTV									(?)
	HDTV									(?)

3. COMPATIBILITY

				encoder	decoder

				H.320	--->	H.32X	  (terminal)	(A,M)
				H.32X	--->	H.320   (terminal)	(A,M)

				H.261	--->	H.26X				(P,FS)
				H.26X	--->	H.261				(P,FS)
				MPEG1	--->	H.26X				(P,FS)
				MPEG2	--->	H.26X				(P,FS)
			    *"CMTT/2"--->	H.26X				(P,FS)

		   	    * Secondary distribution, which may include classes
			       above "601"

4. PICTURE QUALITY

	"PAL/NTSC" at 3-5  Mbit/s and delay=?			(T,FS)
	"Rec. 601" at 8-10 Mbit/s and delay=?			(T,FS)

5. DELAY

	less than about 150 ms at bit rate > 2 Mbit/s		(FS)






6. CODEC COMPLEXITY

	complex/high performance
		vs
	simple/low performance
		ex. pure intra-codec

7. APPLICATIONS

	CTV, ENG, IPC, ISM, NDB, SSM, STV, TTV 
		(same as the PPD document, p.3 of AVC-70)
	RVS (Remote Video Surveillance)

7. ATM

	VBR and CBR							(A,M)
	Cell loss resilience						(M,FS)
	Bit error resilience						(M,FS)
	High/low priority cell utilization				(P,FS)
	High/low priority cell independent rate control		(P,FS)
	Usage Parameter Control					(M,FS)

8. MULTIPOINT

	Continuous presence possible					(P,FS)
		Time-sliced decoding
		Editing without decoding-recoding
	Mix of H.320 and H.32X						(M,FS)

9. H.32X TERMINAL

	Interwork with 

		H.320 terminal						(A,FS)
		Network database						(P,FS)
		Distributive service					(P,FS)
		Multipoint							(A,FS)
		Stored bitstream						(P,FS)

	Multimedia multiplexing						(M,FS)
	Audio quality > ?							(FS)
	Relative audio/video delay < ?				(FS)
	Video clock recovery						(FS)
	Encryption/scrambling						(FS)