ffmpeg. Video transcoding

1, of the Mother "ffmpeg video transcoding C ++":

　　Ffmpeg video development tutorial (a) - for video format conversion features ultra-detailed version _zhangamxqun column -CSDN blog .html ( https://blog.csdn.net/zhangamxqun/article/details/80304494 )

　　Implemented using ffmpeg transcoding sample (code for) -T-bagwell-ChinaUnix blog .html ( http://blog.chinaunix.net/uid-11344913-id-3930864.html )

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