catch the log and save into the log_ffmpeg.txt
add catch yuv from decoder
add catch pcm from accdec
add for catch the data from decoder(dup)
save the mjpeg to the YUV420
save the video(ffplayer) to the YUV420
add some log of HTTP(tmp)
保存rtsp网络接收流(rtp碼流)部分,写文件(catch_rtsp_media.ts)
删除一些重复的函数，使得ffmpeg可以编译通过
add demo
更改ffserver.conf，是得可以发送http碼流
1.更改一些文件使得SDL可以在ubuntu10.04(64位)编译通过   2.加了一些log
add some log of RTSP
更改log存放的文件