h264_qsv frame= 250 fps=0.0 q=-0.0 Lsize= 1401kB time=00:00:10.00 bitrate=1146.8kbits/s speed= 14x libopenh264 frame= 250 fps=0.0 q=-0.0 Lsize= 538kB time=00:00:10.00 bitrate= 440.1kbits/s speed=11.7x libx264 frame= 250 fps=132 q=-1.0 Lsize= 516kB time=00:00:10.00 bitrate= 422.5kbits/s speed=5.27x dxva2 frame= 250 fps=129 q=-1.0 Lsize= 516kB time=00:00:10.00 bitrate= 422.5kbits/s speed=5.17x
原文：http://www.cnblogs.com/nlsoft/p/6940515.html