ffmpeg错误码

avformat_open_input -13 

上面这个错误，很可能是你权限没有打开哦，权限不足引起的，这个可不能大意。

如 http://stackoverflow.com/questions/21549829/ffmpeg-avformat-open-input-returned-error 中的解释，－13是权限相关的错误，于是在AndroidManifest.xml中加入以下权限即可：

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

AVERROR_BSF_NOT_FOUND = -1179861752

AVERROR_BUG = -558323010

AVERROR_DECODER_NOT_FOUND = -1128613112

AVERROR_DEMUXER_NOT_FOUND = -1296385272

AVERROR_ENCODER_NOT_FOUND = -1129203192

AVERROR_EOF = -541478725

AVERROR_EXIT = -1414092869

AVERROR_FILTER_NOT_FOUND = -1279870712

AVERROR_INVALIDDATA = -1094995529

AVERROR_MUXER_NOT_FOUND = -1481985528

AVERROR_OPTION_NOT_FOUND = -1414549496

AVERROR_PATCHWELCOME = -1163346256

AVERROR_PROTOCOL_NOT_FOUND = -1330794744

AVERROR_STREAM_NOT_FOUND = -1381258232

AVERROR_BUG2 = -541545794

AVERROR_UNKNOWN = -1313558101