Bitrate control using a heuristic spatial resolution adjustment for a real-time H.264/AVC encoder

EURASIP Journal on Advances in Signal Processing

Table 3 Comparison of the SA between the proposed spatial resolution and the optimal spatial resolution at various target bitrates

Rate control methods	1280 × 720					1920 × 1072				704 × 576
	Target bitrate (kbps)
	250	400	600	800	1000	400	800	1500	2000	150	300	400	1000
SA
Proposed	0.06	0.10	0.33	0.36	0.41	0.19	0.36	0.73	0.73	0.08	0.23	0.51	0.51
Optimal	0.04	0.10	0.26	0.26	0.36	0.16	0.34	0.64	0.82	0.12	0.26	0.44	0.58
Difference (optimal, proposed)	0.02	0.00	0.07	0.10	0.05	0.02	0.02	0.09	0.09	0.04	0.03	0.07	0.08