查看This和This链接以创建使用ffmpeg合并2个音频文件的命令，但它无法正常工作。
我的命令：
String input1 = "/storage/emulated/0/jd.m4a ";
String input2 = "/storage/emulated/0/jd.m4a "; //trying with same audio just to check if it works or not
String filter = "-filter_complex [0:a]volume=0.99[a1];[1:a]volume=0.3[a2];[a1][a2]amerge=inputs=2,volume=1.3,pan=stereo|c0<c0+c2|c1<c1+c3[aout] ";
String output = "-map [aout] -strict -2 /storage/emulated/0/mergefile.m4a";
String[] cmd = {"-i",input1,"-i",input2,filter,output};
控制台输出：
03-20 13:52:04.981 32013-32013/io.whispero.soundmerger E/onProgress: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
03-20 13:52:04.981 32013-32013/io.whispero.soundmerger E/onProgress: built with gcc 4.8 (GCC)
03-20 13:52:04.982 32013-32013/io.whispero.soundmerger E/onProgress: configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
03-20 13:52:04.982 32013-32013/io.whispero.soundmerger E/onProgress: libavutil 55. 17.103 / 55. 17.103
03-20 13:52:04.983 32013-32013/io.whispero.soundmerger E/onProgress: libavcodec 57. 24.102 / 57. 24.102
03-20 13:52:04.983 32013-32013/io.whispero.soundmerger E/onProgress: libavformat 57. 25.100 / 57. 25.100
03-20 13:52:04.984 32013-32013/io.whispero.soundmerger E/onProgress: libavdevice 57. 0.101 / 57. 0.101
03-20 13:52:04.984 32013-32013/io.whispero.soundmerger E/onProgress: libavfilter 6. 31.100 / 6. 31.100
03-20 13:52:04.985 32013-32013/io.whispero.soundmerger E/onProgress: libswscale 4. 0.100 / 4. 0.100
03-20 13:52:04.985 32013-32013/io.whispero.soundmerger E/onProgress: libswresample 2. 0.101 / 2. 0.101
03-20 13:52:04.985 32013-32013/io.whispero.soundmerger E/onProgress: libpostproc 54. 0.100 / 54. 0.100
03-20 13:52:04.986 32013-32013/io.whispero.soundmerger E/onProgress: Unrecognized option 'filter_complex [0:a]volume=0.99[a1];[1:a]volume=0.3[a2];[a1][a2]amerge=inputs=2,volume=1.3,pan=stereo|c0<c0+c2|c1<c1+c3[aout] '.
03-20 13:52:04.987 32013-32013/io.whispero.soundmerger E/onProgress: Error splitting the argument list: Option not found
根据我的理解，ffmpeg无法拆分和区分command的输入，过滤和输出，但我尝试了很多变化，仍然无效：（< / p>
请帮忙。看了很多，但没有一个命令正常工作。
提前致谢！
修改：
在-report之前添加-filter_complex并运行。 LOG在AS @Mulvya问下面
03-20 16:29:06.830 27671-27671/io.whispero.soundmerger E/onProgress: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
03-20 16:29:06.830 27671-27671/io.whispero.soundmerger E/onProgress: built with gcc 4.8 (GCC)
03-20 16:29:06.830 27671-27671/io.whispero.soundmerger E/onProgress: configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
03-20 16:29:06.830 27671-27671/io.whispero.soundmerger E/onProgress: libavutil 55. 17.103 / 55. 17.103
03-20 16:29:06.830 27671-27671/io.whispero.soundmerger E/onProgress: libavcodec 57. 24.102 / 57. 24.102
03-20 16:29:06.832 27671-27671/io.whispero.soundmerger E/onProgress: libavformat 57. 25.100 / 57. 25.100
03-20 16:29:06.832 27671-27671/io.whispero.soundmerger E/onProgress: libavdevice 57. 0.101 / 57. 0.101
03-20 16:29:06.833 27671-27671/io.whispero.soundmerger E/onProgress: libavfilter 6. 31.100 / 6. 31.100
03-20 16:29:06.834 27671-27671/io.whispero.soundmerger E/onProgress: libswscale 4. 0.100 / 4. 0.100
03-20 16:29:06.834 27671-27671/io.whispero.soundmerger E/onProgress: libswresample 2. 0.101 / 2. 0.101
03-20 16:29:06.835 27671-27671/io.whispero.soundmerger E/onProgress: libpostproc 54. 0.100 / 54. 0.100
03-20 16:29:06.836 27671-27671/io.whispero.soundmerger E/onProgress: Unrecognized option 'i '.
03-20 16:29:06.837 27671-27671/io.whispero.soundmerger E/onProgress: Error splitting the argument list: Option not found
03-20 16:29:06.846 27671-27671/io.whispero.soundmerger E/onFailure: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Unrecognized option 'i '.
Error splitting the argument list: Option not found
03-20 16:29:06.848 27671-27671/io.whispero.soundmerger E/onFinish: onFinish