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• Issues in executing FFmpeg command in Java code in Linux

  12 août 2017, par Tina J

  I have problems executing this ffmpeg command in my java code :

  ffmpeg -i sample.mp4 -i ad.mp4 -filter_complex "[0:v]trim=0:15,setpts=PTS-STARTPTS[v0]; [1:v]trim=0:5,setpts=PTS-STARTPTS[v1]; [0:v]trim=20:30,setpts=PTS-STARTPTS[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[out]" -map "[out]" output.mp4

  I used the getRuntime() method below, but that doesn’t work for me. Even if I simply remove the ", still it doesn’t work. When I simply copy-paste the equivalent string in terminal, it works.

  String c1=" -i "+dir+"sample.mp4 "+"-i "+dir+"ad.mp4 -fi‌​lter_complex [0:v]‌​trim=0:15,setpts=PTS‌​-STARTPTS[v0]; [1:v]trim=0:5,setpts=PTS-STARTPTS[v1]; [0:v]trim=20:30,setpts=PTS-STARTPTS[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[out] -map [out] "+dir+"output.‌​mp4";
  
  RunCommand("ffmpeg"+c1);

  Using this method :

  private static void RunCommand(String command) throws InterruptedException {
  
      try {
  
          // Execute command
  
          Process proc = Runtime.getRuntime().exec(command);
  
          System.out.println(proc.exitValue());
  
  
  
          // Get output stream to write from it
  
          // Read the output
  
  
  
          BufferedReader reader =  
  
                  new BufferedReader(new InputStreamReader(proc.getInputStream()));
  
          String line = "";
  
          while((line = reader.readLine()) != null) {
  
              System.out.print(line + "\n");
  
              //              System.out.println(ads.get(0));
  
          }
  
          proc.waitFor();  
  
  
  
      } catch (IOException e) {
  
      }
  
  }

  This one doesn’t work also, and printing the exit value shows this :

  Exception in thread "main" java.lang.IllegalThreadStateException: process hasn't exited
  
      at java.lang.UNIXProcess.exitValue(UNIXProcess.java:423)
  
      at parser.Parser.RunCommand(Parser.java:106)
  
      at parser.Parser.commandGenerator2(Parser.java:79)
  
      at parser.Parser.main(Parser.java:44)

  If I move the proc.waitFor(); before printing the exit value, it is 1.

  What is the problem ? Why it doesn’t run in Java code ?

• FFmpeg.js Extract images (jpeg/png) from MP4 file

  5 août 2017, par Anuragh27crony

  I’m trying to extract images/frames from a mp4 on client side with the help of ffmpeg.js.

  Equivalent Ffmpeg command :

  ffmpeg -i Sample.mp4 -r 1 output%d.png

  However i could try to create webm file from jpeg files but i couldn’t do the reverse and ends up with following error message

  Unable to find a suitable output format for ’output%d.png’

  Here is the code i’m trying to use.

  var ffmpeg = require("ffmpeg.js/ffmpeg-mp4");
  
  var fs = require("fs");
  
  var stdout = "";
  
  var stderr = "";
  
  
  
  var testData = new Uint8Array(fs.readFileSync("Sample.mp4"));
  
  
  
  var result = ffmpeg({
  
    MEMFS: [{name: "Sample.mp4", data: testData}],
  
    stdin: function() {},
  
    arguments: ["-i", "Sample.mp4","-r","1", "output%d.png"],
  
  });
  
  
  
  console.log(result.MEMFS.length)
  
  if(result.MEMFS.length>0){
  
      var out = result.MEMFS[0].data;
  
      fs.writeFileSync("test.jpg", Buffer(out.data));
  
      }

  Console Output

  ffmpeg version n3.1.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with emcc (Emscripten gcc/clang-like replacement) 1.36.7 ()
  
    configuration: --cc=emcc --enable-cross-compile --target-os=none --arch=x86 --disable-runtime-cpudetect --disable-asm --disable-fast-unaligned --disable-pthreads --disable-w32threads --di
  
  sable-os2threads --disable-debug --disable-stripping --disable-all --enable-ffmpeg --enable-avcodec --enable-avformat --enable-avutil --enable-swresample --enable-swscale --enable-avfilter
  
  --disable-network --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-vdpau --enable-decoder=vp8 --enable-decoder=vp9 --enable-decoder=theora --enable-decoder=mpeg2vid
  
  eo --enable-decoder=mpeg4 --enable-decoder=h264 --enable-decoder=hevc --enable-decoder=png --enable-decoder=mjpeg --enable-decoder=vorbis --enable-decoder=opus --enable-decoder=mp3 --enable
  
  -decoder=ac3 --enable-decoder=aac --enable-decoder=ass --enable-decoder=ssa --enable-decoder=srt --enable-decoder=webvtt --enable-demuxer=matroska --enable-demuxer=ogg --enable-demuxer=avi
  
  --enable-demuxer=mov --enable-demuxer=flv --enable-demuxer=mpegps --enable-demuxer=image2 --enable-demuxer=mp3 --enable-demuxer=concat --enable-protocol=file --enable-filter=aresample --ena
  
  ble-filter=scale --enable-filter=crop --enable-filter=overlay --disable-bzlib --disable-iconv --disable-libxcb --disable-lzma --disable-sdl --disable-securetransport --disable-xlib --disabl
  
  e-zlib --enable-encoder=libx264 --enable-encoder=libmp3lame --enable-encoder=aac --enable-muxer=mp4 --enable-muxer=mp3 --enable-muxer=null --enable-gpl --enable-libmp3lame --enable-libx264
  
  --extra-cflags=-I../lame/dist/include --extra-ldflags=-L../lame/dist/lib
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 48.101 / 57. 48.101
  
    libavformat    57. 41.100 / 57. 41.100
  
    libavfilter     6. 47.100 /  6. 47.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
  [h264 @ 0x809d50] Warning: not compiled with thread support, using thread emulation
  
  [aac @ 0x80e640] Warning: not compiled with thread support, using thread emulation
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Sample.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.56.100
  
    Duration: 00:01:00.00, start: 0.000000, bitrate: 137 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 360x214, 113 kb/s, 1 fps, 1 tbr, 16384 tbn, 32768 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 23 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [NULL @ 0x810d00] Unable to find a suitable output format for 'output%d.png'
  
  output%d.png: Invalid argument

• Error using ffmpeg eq filter [duplicate]

  29 juin 2017, par user3216525

  This question already has an answer here :

  • ffmpeg : Unable to find a suitable output format for ’–i’
    
    1 answer
    

  When trying to enhance a video using the following command :

  ffmpeg —i input.mp4 -vf eq=contrast=1.04:brightness=0.0:saturation=1.3:gamma=1.25 output.mp4

  I get the following error message :

  [NULL @ 0x7fe4d900ac00] Unable to find a suitable output format for '—i'
  
  —i: Invalid argument

  The equivalent ffplay command does work :

  ffplay input.mp4  -vf eq=contrast=1.04:brightness=0.0:saturation=1.3:gamma=1.25

  Any ideas ?

  Thanks in advance !