title: No such filter in ffmpeg
body: <p>I am trying to create the slideshow with below command.</p>
  
  <p>Here is the command I have executed:</p>
  
  <pre><code> ffmpeg
  -loop 1 -t 1 -i /sdcard/input0.png 
  -loop 1 -t 1 -i /sdcard/input1.png 
  -loop 1 -t 1 -i /sdcard/input2.png 
  -loop 1 -t 1 -i /sdcard/input3.png 
  -loop 1 -t 1 -i /sdcard/input4.png 
  -filter_complex 
  "[0:v]trim=duration=15,fade=t=out:st=14.5:d=0.5[v0]; 
   [1:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v1]; 
   [2:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v2]; 
   [3:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v3]; 
   [4:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v4]; 
   [v0][v1][v2][v3][v4]concat=n=5:v=1:a=0,format=yuv420p[v]" -map "[v]" /sdcard/out.mp4
  </code></pre>
  
  <p>on execution of this command it gives error something like:</p>
  
  <pre><code> 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
  [mjpeg @ 0x4362af10] Changing bps to 8
  Input #0, image2, from '/sdcard/img0001.jpg':
    Duration: 00:00:00.04, start: 0.000000, bitrate: 2410 kb/s
      Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 259x194 [SAR 1:1 DAR 259:194], 25 fps, 25 tbr, 25 tbn, 25 tbc
  [mjpeg @ 0x436300a0] Changing bps to 8
  Input #1, image2, from '/sdcard/img0002.jpg':
    Duration: 00:00:00.04, start: 0.000000, bitrate: 2053 kb/s
      Stream #1:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 290x174 [SAR 1:1 DAR 5:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
  [mjpeg @ 0x436383a0] Changing bps to 8
  Input #2, image2, from '/sdcard/img0003.jpg':
    Duration: 00:00:00.04, start: 0.000000, bitrate: 3791 kb/s
      Stream #2:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 300x168 [SAR 1:1 DAR 25:14], 25 fps, 25 tbr, 25 tbn, 25 tbc
  [mjpeg @ 0x43648f50] Changing bps to 8
  Input #3, image2, from '/sdcard/img0004.jpg':
    Duration: 00:00:00.04, start: 0.000000, bitrate: 1796 kb/s
      Stream #3:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 259x194 [SAR 1:1 DAR 259:194], 25 fps, 25 tbr, 25 tbn, 25 tbc
  [mjpeg @ 0x437b4070] Changing bps to 8
  Input #4, image2, from '/sdcard/img0005.jpg':
    Duration: 00:00:00.04, start: 0.000000, bitrate: 1083 kb/s
      Stream #4:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 212x160 [SAR 1:1 DAR 53:40], 25 fps, 25 tbr, 25 tbn, 25 tbc
  [AVFilterGraph @ 0x4393c960] No such filter: '"'
  Error initializing complex filters.
  Invalid argument
  </code></pre>
  
  <p>and i used this demo <a href="https://github.com/WritingMinds/ffmpeg-android-java" rel="nofollow">https://github.com/WritingMinds/ffmpeg-android-java</a></p>