x264编解码器 - Intel IPP
1 下载intel xe composer 2011 评估版本：
http://software.intel.com/en-us/articles/intel-composer-xe/
需要填写注册信息，申请一个评估版本，intel会发送下载链接到你的邮箱.
2 raw 264转换工具
http://www.videolan.org/developers/x264.html
x264.exe -o out.h264 my_movie.ts
3 下载编译codecs
http://software.intel.com/en-us/articles/intel-integrated-performance-primitives-code-samples/
打开一个cmd，输入(我的ipp安装在e盘)：
set ipproot=E:\Program Files\Intel\Composer XE 2011 SP1\ipp
浏览一下sample解压出来的目录，到
ipp-samples\audio-video-codecs\application\umc_h264_dec_con\ipp-samples\audio-video-codecs\application\umc_video_enc_con\
分别把这2个目录里面的sln文件拖放到刚才的cmd里面（其实就是设置sln打开时候的环境变量ipproot）
编译通过，得到2个exe:
umc_video_enc_con.exe
umc_h264_dec_con.exe
4 编码测试结果
4.1 yuv文件信息
1920x1080, 2G bytes, 片长13秒左右
4.2 Windows测试，2核，30fps
E:\Documents and Settings\Administrator\videotest>umc_video_enc_con.exe h264 -i tvu.yuv -w 1920 -h 1080 -t 2 -o x2.h264
Starting H264 encoding tvu.yuv to file x2.h264
Source video width = 1920, height = 1080, frameRate = 30.00
Max frames to encode = 2147483647
Encoding bit rate = 5000000 bits per second
0.10.20.30.40.50.60.70.80.90.100.110.120.130.140.150.160.170.180.190.200.210.220
.230.240.250.260.270.280.290.300.310.320.330.340.350.360.370.380.390.400.410.420
.430.440.450.460.470.480.490.500.510.520.530.540.550.560.570.580.590.600.610.620
.630.640.650.660.670.680.690.700.710.720.730.740.750.760.770.780.790.800.810.
Summary:
Num frames encoded = 810
Encoding Time = 278.45 sec, 2.91 fps
Overall Time = 319.07 sec, 2.54 fps
Average CPU usage = 44.85%
Encoded Size = 17218164 bytes
Compression Ratio = 146.32
EncodedSize/ExpectedSize = 1.02
cpu占用（只有一个核在工作，-t 2参数没有起作用）
4.3 linux上的编码测试结果(4核，fps=60)
localhost videotest # LD_LIBRARY_PATH=/data/intel/composer_xe_2011_sp1.10.319/ipp/lib/ia32/:/data/intel/composer_xe_2011_sp1/lib/ia32/ ./umc_video_enc_con h264 -w 1920 -h 1080 -t 4 -f 60 -i tvu.yuv420 -o tvu.yuv420.h264
Starting H264 encoding tvu.yuv420 to file tvu.yuv420.h264
Source video width = 1920, height = 1080, frameRate = 60.00
Max frames to encode = 2147483647
Encoding bit rate = 5000000 bits per second
0.10.20.30.40.50.60.70.80.90.100.110.120.130.140.150.160.170.180.190.200.210.220.230.240.250.260.270.280.290.300.310.320.330.340.350.360.370.380.390.400.410.420.430.440.450.460.470.480.490.500.510.520.530.540.550.560.570.580.590.600.610.620.630.640.650.660.670.680.690.
Summary:
Num frames encoded = 690
Encoding Time = 30.30 sec, 22.77 fps
Overall Time = 31.88 sec, 21.64 fps
Average CPU usage = 0.00%
Encoded Size = 7336180 bytes
Compression Ratio = 292.55
EncodedSize/ExpectedSize = 1.02
5 解码测试
环境：Windows，双核cpu
E:\Documents and Settings\Administrator\videotest>umc_h264_dec_con.exe -t1 -i x2.h264 -o xx2.yuv . x2.h264 31 1.1135 s. 27.8402 fps All - 20.6545 fps E:\Documents and Settings\Administrator\videotest>umc_h264_dec_con.exe -t2 -i x2.h264 -o xx2.yuv . x2.h264 31 0.3229 s. 95.9932 fps All - 13.2822 fps