Characteristics of Video Traffic from Videoconference Applications: From H.261 to H.264

Table 1

Statistical quantities of the sample frame-size sequences.

Case  1 (Unconstrained)
Trace	Client	Encoder	Duration	Content	Target rate	No frames	Frame rate	Rate	Mean	Variance
1	ViC	Intra H261	3600	VC-H	700	54006	15	111	921	249670
2				VC-L		53937	15	63	527	174130
3		H263		VC-H		54011	15	72	603	56981
4				VC-L		53453	15	54	457	24588
5		H263+		VC-H		53679	15	39	327	167780
6				VC-L		53633	15	27	224	205200
7	Vpoint	H261	1800	VC-H	700	27275	15	365	3009	731270
8				VC-L		27276	15	193	1592	347080
9	eConf	H263+	3600	VC-H	444	96805	27	298	1387	389300
10				VC-L		91710	25	130	640	147790
11	TKN	H263	2700	OFFICE		33825	13	91	904	107160
12			3600	LECTURE		45459	13	62	618	136850
Case  2 (Constrained)
1	Vpoint	H261	3600	VC-H	155	49596	14	144	1306	48718
2				VC-L		50636	14	143	1275	29285
3	eConf	H263+	3600	VC-H	82	51331	14	84	733	8267
4				VC-L		48848	14	67	619	22758
5	EnVision	H263	1800	VC-H	256	22501	13	239	2394	27275
6	TKN		2700	OFFICE	64	13800	5	64	1565	37316
7			3600	LECTURE		16788	5	64	1715	105530
8			2700	OFFICE	256	13936	5	256	6200	456790
9			3600	LECTURE		17707	5	256	6505	1540500
10	Vpoint	H264	3600	VC-H	320	89911	24.975	300.92	1506	820
11				VC-L		90001	25	300.88	1504	234
12	Polycom	H264	3600	VC-H	320	107546	29.874	345.56	1446	11896
13				VC-L		107515	29.865	345.62	1447	12833