700kbps:
RMVB - 3,727,907 Bytes
Total frames processed: 1092
Minimum Average Maximum
Y: PSNR: 8.2835 27.2658 1.#INF
U: PSNR: 17.1865 39.7595 1.#INF
V: PSNR: 16.7647 40.5945 1.#INF
Sum: PSNR: 9.9583 28.9165 1.#INF

Mean Absolute Deviation: 0.0000 2.1077 62.6643
Mean Deviation: -45.2975 0.0289 54.5982
PSNR: 9.9583 28.9165 1.#INF



XviD - 3,989,524 Bytes
Total frames processed: 1092
Minimum Average Maximum
Y: PSNR: 40.2105 44.8537 1.#INF
U: PSNR: 43.8503 48.4567 1.#INF
V: PSNR: 43.9427 48.1714 1.#INF
Sum: PSNR: 41.2607 45.7314 1.#INF

Mean Absolute Deviation: 0.0000 0.8252 1.6275
Mean Deviation: -0.1762 -0.0161 0.3435
PSNR: 41.2607 45.7314 1.#INF



350kbps (RMVB的最低流量):
RMVB - 1,777,895 Bytes
Total frames processed: 1092
Minimum Average Maximum
Y: PSNR: 8.2916 27.2131 1.#INF
U: PSNR: 17.2035 39.1142 1.#INF
V: PSNR: 16.9298 39.8232 1.#INF
Sum: PSNR: 9.9658 28.8463 1.#INF

Mean Absolute Deviation: 0.0000 2.4414 62.6048
Mean Deviation: -45.3401 0.0121 54.5115
PSNR: 9.9658 28.8463 1.#INF


XviD - 1,999,748 Bytes
Total frames processed: 1092
Minimum Average Maximum
Y: PSNR: 34.7425 39.9515 1.#INF
U: PSNR: 39.1245 44.2275 1.#INF
V: PSNR: 39.4993 43.8493 1.#INF
Sum: PSNR: 35.9265 40.9377 1.#INF

Mean Absolute Deviation: 0.0000 1.4110 2.4772
Mean Deviation: -0.3934 -0.0189 0.9164
PSNR: 35.9265 40.9377 1.#INF

從數字上看，XviD畫質大勝RMVB，但實際上"看"起來，RMVB少很多方塊。
如想看詳細測試結果(每Frame的PSNR值)，可到
http://sswroom.no-ip.org:5080/Codec_test_result.rar