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  • Merging two audio files in Android using FFMPEG

    3 août 2016, par Jeremy

    I’m working on an application that takes two audio files, and merges them into the respected channels. The way they are being equalized are not as good as I had hoped, So I want to adjust the volume of each file during the mixing phase. I’ve seen a couple of examples online, like this, this, and [this][3].. but none of them are working for me. Can someone direct me in the right direction with this ? Much appreciation !

    I am using this library to execute : https://github.com/WritingMinds/ffmpeg-android-java

    Here is my code (EDIT)

    String files = "-i " + mVoiceFile.getAbsolutePath() + " -i " + mBeatFile.getAbsolutePath();
    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|c0code>

    enter code here

    and here are my errors from running.

    04-06 12:17:34.079 30975-30975/me.rapchat.rapchat E/Studio Process: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
    04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavutil      54.  7.100 / 54.  7.100
    04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavcodec     56.  1.100 / 56.  1.100
    04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavformat    56.  4.101 / 56.  4.101
    04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavdevice    56.  0.100 / 56.  0.100
    04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libavfilter     5.  1.100 /  5.  1.100
    04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libswscale      3.  0.100 /  3.  0.100
    04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libswresample   1.  1.100 /  1.  1.100
    04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libpostproc    53.  0.100 / 53.  0.100
    04-06 12:17:34.372 30975-30975/me.rapchat.rapchat E/Studio Process: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/recording.m4a':
    04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:   Metadata:
    04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:     major_brand     : mp42
    04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:     minor_version   : 0
    04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:     compatible_brands: isommp42
    04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:     creation_time   : 2016-04-06 19:17:33
    04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:   Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s
    04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)
    04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:     Metadata:
    04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:       creation_time   : 2016-04-06 19:17:33
    04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:       handler_name    : SoundHandle
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process: Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a':
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:   Metadata:
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     major_brand     : mp42
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     minor_version   : 0
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     compatible_brands: mp42isom
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     creation_time   : 1993-11-24 14:46:42
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     encoder         : Max 0.9.1
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     date            : 2015
    04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:   Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s
    04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:     Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:     Metadata:
    04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:       creation_time   : 1993-11-24 14:46:42
    04-06 12:17:34.404 30975-30975/me.rapchat.rapchat E/Studio Process: [NULL @ 0xb5e4fc00] Unable to find a suitable output format for '[a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio Process: [a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio Status Failed: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
                                                                             ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
                                                                               built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
                                                                               configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
                                                                               libavutil      54.  7.100 / 54.  7.100
                                                                               libavcodec     56.  1.100 / 56.  1.100
                                                                               libavformat    56.  4.101 / 56.  4.101
                                                                               libavdevice    56.  0.100 / 56.  0.100
                                                                               libavfilter     5.  1.100 /  5.  1.100
                                                                               libswscale      3.  0.100 /  3.  0.100
                                                                               libswresample   1.  1.100 /  1.  1.100
                                                                               libpostproc    53.  0.100 / 53.  0.100
                                                                             Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/recording.m4a':
                                                                               Metadata:
                                                                                 major_brand     : mp42
                                                                                 minor_version   : 0
                                                                                 compatible_brands: isommp42
                                                                                 creation_time   : 2016-04-06 19:17:33
                                                                               Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s
                                                                                 Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)
                                                                                 Metadata:
                                                                                   creation_time   : 2016-04-06 19:17:33
                                                                                   handler_name    : SoundHandle
                                                                             Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a':
                                                                               Metadata:
                                                                                 major_brand     : mp42
                                                                                 minor_version   : 0
                                                                                 compatible_brands: mp42isom
                                                                                 creation_time   : 1993-11-24 14:46:42
                                                                                 encoder         : Max 0.9.1
                                                                                 iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
                                                                                 date            : 2015
                                                                               Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s
                                                                                 Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
                                                                                 Metadata:
                                                                                   creation_time   : 1993-11-24 14:46:42
                                                                             [NULL @ 0xb5e4fc00] Unable to find a suitable output format for '[a1][a2]amerge,pan=stereo|c0code>
  • FFmpeg concat in android

    13 avril 2018, par fvn

    I have trying to concat multiple videos (mp4 or mov)on Android Studio using FFMPEG. I have managed to get vidoes in an arrayList and their path like this :

    private List<string> getSelectedVideos(Intent data) {

           List<string> result = new ArrayList&lt;>();

           ClipData clipData = data.getClipData();
           if(clipData != null) {
               for(int i=0;icode></string></string>

    I have looked online on how to concat vidoes using FFMPEG https://trac.ffmpeg.org/wiki/Concatenate

    However I’m not sure how to do it using Android studio. Any help would be much appreciated.

  • Merging two audio files in Android using FFMPEG

    1er juillet 2021, par Jeremy

    I'm working on an application that takes two audio files, and merges them into the respected channels. The way they are being equalized are not as good as I had hoped, So I want to adjust the volume of each file during the mixing phase. I've seen a couple of examples online, like this, this, and [this][3].. but none of them are working for me. Can someone direct me in the right direction with this ? Much appreciation !

    &#xA;&#xA;

    I am using this library to execute : https://github.com/WritingMinds/ffmpeg-android-java

    &#xA;&#xA;

    Here is my code (EDIT)

    &#xA;&#xA;

    String files = "-i " &#x2B; mVoiceFile.getAbsolutePath() &#x2B; " -i " &#x2B; mBeatFile.getAbsolutePath();&#xA;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

    &#xA;&#xA;

    enter code here

    &#xA;&#xA;

    and here are my errors from running.

    &#xA;&#xA;

    04-06 12:17:34.079 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.&#xA;04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers&#xA;04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)&#xA;04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags=&#x27;-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon&#x27; --extra-ldflags=&#x27;-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie&#x27; --extra-libs=&#x27;-lpng -lexpat -lm&#x27; --extra-cxxflags=&#xA;04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libavutil      54.  7.100 / 54.  7.100&#xA;04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libavcodec     56.  1.100 / 56.  1.100&#xA;04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libavformat    56.  4.101 / 56.  4.101&#xA;04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libavdevice    56.  0.100 / 56.  0.100&#xA;04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libavfilter     5.  1.100 /  5.  1.100&#xA;04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libswscale      3.  0.100 /  3.  0.100&#xA;04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libswresample   1.  1.100 /  1.  1.100&#xA;04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   libpostproc    53.  0.100 / 53.  0.100&#xA;04-06 12:17:34.372 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/data/user/0/me.rapchat.rapchat/cache/recording.m4a&#x27;:&#xA;04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   Metadata:&#xA;04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     major_brand     : mp42&#xA;04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     minor_version   : 0&#xA;04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     compatible_brands: isommp42&#xA;04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     creation_time   : 2016-04-06 19:17:33&#xA;04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s&#xA;04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)&#xA;04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     Metadata:&#xA;04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:       creation_time   : 2016-04-06 19:17:33&#xA;04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:       handler_name    : SoundHandle&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process: Input #1, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a&#x27;:&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   Metadata:&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     major_brand     : mp42&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     minor_version   : 0&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     compatible_brands: mp42isom&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     creation_time   : 1993-11-24 14:46:42&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     encoder         : Max 0.9.1&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     date            : 2015&#xA;04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:   Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s&#xA;04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)&#xA;04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:     Metadata:&#xA;04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process:       creation_time   : 1993-11-24 14:46:42&#xA;04-06 12:17:34.404 30975-30975/me.rapchat.rapchat E/Studio&#xA0;Process: [NULL @ 0xb5e4fc00] Unable to find a suitable output format for &#x27;[a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio&#xA0;Process: [a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio&#xA0;Status&#xA0;Failed: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.&#xA;                                                                          ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers&#xA;                                                                            built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)&#xA;                                                                            configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags=&#x27;-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon&#x27; --extra-ldflags=&#x27;-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie&#x27; --extra-libs=&#x27;-lpng -lexpat -lm&#x27; --extra-cxxflags=&#xA;                                                                            libavutil      54.  7.100 / 54.  7.100&#xA;                                                                            libavcodec     56.  1.100 / 56.  1.100&#xA;                                                                            libavformat    56.  4.101 / 56.  4.101&#xA;                                                                            libavdevice    56.  0.100 / 56.  0.100&#xA;                                                                            libavfilter     5.  1.100 /  5.  1.100&#xA;                                                                            libswscale      3.  0.100 /  3.  0.100&#xA;                                                                            libswresample   1.  1.100 /  1.  1.100&#xA;                                                                            libpostproc    53.  0.100 / 53.  0.100&#xA;                                                                          Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/data/user/0/me.rapchat.rapchat/cache/recording.m4a&#x27;:&#xA;                                                                            Metadata:&#xA;                                                                              major_brand     : mp42&#xA;                                                                              minor_version   : 0&#xA;                                                                              compatible_brands: isommp42&#xA;                                                                              creation_time   : 2016-04-06 19:17:33&#xA;                                                                            Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s&#xA;                                                                              Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)&#xA;                                                                              Metadata:&#xA;                                                                                creation_time   : 2016-04-06 19:17:33&#xA;                                                                                handler_name    : SoundHandle&#xA;                                                                          Input #1, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a&#x27;:&#xA;                                                                            Metadata:&#xA;                                                                              major_brand     : mp42&#xA;                                                                              minor_version   : 0&#xA;                                                                              compatible_brands: mp42isom&#xA;                                                                              creation_time   : 1993-11-24 14:46:42&#xA;                                                                              encoder         : Max 0.9.1&#xA;                                                                              iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000&#xA;                                                                              date            : 2015&#xA;                                                                            Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s&#xA;                                                                              Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)&#xA;                                                                              Metadata:&#xA;                                                                                creation_time   : 1993-11-24 14:46:42&#xA;                                                                          [NULL @ 0xb5e4fc00] Unable to find a suitable output format for &#x27;[a1][a2]amerge,pan=stereo|c0code>

    &#xA;