avformat_open_input返回错误-22(Invalid argument)或-2(No such file or directory)
代码AVFormatContext*pFormatCtx=NULL;AVCodecContext*pCodecCtx=NULL;AVCodec*pCodec;AVDictionaryEntry*dict=NULL;intiHour,iMinute,iSecond,iTotalSeconds;//HH:MM:SSintvideoIndex,audioIndex;constchar*fileName=