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  • Strange "pause" in video after concatenation of two mp4 videos

    3 octobre 2016, par user606521

    I am concatenating two mp4 videos. The problem is that first video (intro.mp4) lasts 5 seconds, second video (output.mp4) lasts 2 seconds and video created by concatenating them lasts 9 seconds (and should last 5+2 = 7 seconds). In final.mp4 video the last frame from first video (intro.mp4) i shown for additional 2 seconds before second video (output.mp4) is played. It looks like a lag when watching video. What I am doing wrong ?

    list.txt :

    file 'data/intro.mp4'
    file 'output.mp4'

    command :

    ./bin/ffmpeg -f concat -i list.txt -c copy final.mp4

    output :

    ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
     configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --disable-doc --arch=x86_64 --enable-runtime-cpudetect
     libavutil      54. 27.100 / 54. 27.100
     libavcodec     56. 41.100 / 56. 41.100
     libavformat    56. 36.100 / 56. 36.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 16.101 /  5. 16.101
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.100 /  1.  2.100
     libpostproc    53.  3.100 / 53.  3.100
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a6a80e600] Auto-inserting h264_mp4toannexb bitstream filter
    Input #0, concat, from 'list.txt':
     Duration: N/A, start: 0.000000, bitrate: 1296 kb/s
       Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540, 1163 kb/s, 23.98 fps, 23.98 tbr, 11988 tbn, 47.95 tbc
       Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 133 kb/s
    [mp4 @ 0x7f8a6c006a00] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x7f8a6c006a00] Codec for stream 1 does not use global headers but container format requires global headers
    Output #0, mp4, to 'final.mp4':
     Metadata:
       encoder         : Lavf56.36.100
       Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 960x540, q=2-31, 1163 kb/s, 23.98 fps, 23.98 tbr, 11988 tbn, 11988 tbc
       Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 133 kb/s
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
     Stream #0:1 -> #0:1 (copy)
    Press [q] to stop, [?] for help
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a6a80e600] Auto-inserting h264_mp4toannexb bitstream filter
    frame=  258 fps=0.0 q=-1.0 Lsize=     997kB time=00:00:09.84 bitrate= 829.5kbits/s    
    video:897kB audio:93kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.634306%
  • Unable to merge videos in Android using JavaCV ("Sample Description" Error)

    15 décembre 2015, par San

    I am creating a video from images via FFMPEG and I am able to get the video from images. I am also making use of JavaCV to merge two videos and I am able to join videos using JavaCV without any issues provided both the videos are taken via camera, i.e, a video actually recorded via mobile camera.

    Issue that I’m facing :

    I am not able to merge the video that was generated from FFMPEG using the images along with the video user has chosen which will mostly be a video that was not generated and taken via mobile camera.

    CODE :
    Code to generate Video via Images :

                     FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(path + "/" + "dec16.mp4", 800, 400);
                               try {
                                   recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);
                                   //recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
                                   recorder.setVideoCodecName("H264");
                                   recorder.setVideoOption("preset", "ultrafast");
                                   recorder.setFormat("mp4");
                                   recorder.setFrameRate(frameRate);
                                   recorder.setVideoBitrate(60);
                                   recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P);
                                   startTime = System.currentTimeMillis();
                                   recorder.start();
                                   for(int j=0;j recorder.getTimestamp()) {

                                           recorder.setTimestamp(t);
                                           recorder.record(image);
                                       }
                                   }
                                   recorder.stop();
                               } catch (Exception e) {
                                   e.printStackTrace();
                               }

    Code to merge Videos :

    int count = file_path.size();
               System.out.println("final_joined_list size " + file_path.size());
               if (file_path.size() != 1) {
                   try {
                       Movie[] inMovies = new Movie[count];
                       mediaStorageDir = new File(
                               Environment.getExternalStorageDirectory()
                                       + "/Pictures");

                       for (int i = 0; i < count; i++) {
                           File file = new File(file_path.get(i));
                           System.out.println("fileeeeeeeeeeeeeeee " + file);
                           System.out.println("file exists!!!!!!!!!!");

                           FileInputStream fis = new FileInputStream(file);
                           FileChannel fc = fis.getChannel();
                           inMovies[i] = MovieCreator.build(fc);
                           fis.close();
                           fc.close();

                       }
                       List<track> videoTracks = new LinkedList<track>();
                       List<track> audioTracks = new LinkedList<track>();
                       Log.d("Movies length", "isss  " + inMovies.length);
                       if (inMovies.length != 0) {

                           for (Movie m : inMovies) {

                               for (Track t : m.getTracks()) {
                                   if (t.getHandler().equals("soun")) {
                                       audioTracks.add(t);
                                   }
                                   if (t.getHandler().equals("vide")) {
                                       videoTracks.add(t);
                                   }
                                   if (t.getHandler().equals("")) {

                                   }
                               }

                           }
                       }

                       Movie result = new Movie();

                       System.out.println("audio and videoo tracks : "
                               + audioTracks.size() + " , " + videoTracks.size());
                       if (audioTracks.size() > 0) {
                           result.addTrack(new AppendTrack(audioTracks
                                   .toArray(new Track[audioTracks.size()])));
                       }
                       if (videoTracks.size() > 0) {
                           result.addTrack(new AppendTrack(videoTracks
                                   .toArray(new Track[videoTracks.size()])));
                       }
                       IsoFile out = null;
                       try {
                           out = (IsoFile) new DefaultMp4Builder().build(result);
                       } catch (Exception e) {
                           // TODO Auto-generated catch block
                           e.printStackTrace();
                       }

                       long timestamp = new Date().getTime();
                       String timestampS = "" + timestamp;

                       File storagePath = new File(mediaStorageDir
                               + File.separator);
                       storagePath.mkdirs();
                       File myMovie = new File(storagePath, String.format("%s.mp4", timestampS));
                       FileOutputStream fos = new FileOutputStream(myMovie);
                       FileChannel fco = fos.getChannel();
                       fco.position(0);
                       out.getBox(fco);
                       fco.close();
                       fos.close();

                   } catch (FileNotFoundException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   } catch (IOException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   }
                   String mFileName = Environment.getExternalStorageDirectory()
                           .getAbsolutePath();
                   // mFileName += "/output.mp4";

                   File sdCardRoot = Environment.getExternalStorageDirectory();
                   File yourDir = new File(mediaStorageDir + File.separator);
                   for (File f : yourDir.listFiles()) {
                       if (f.isFile())
                           name = f.getName();
                       // make something with the name
                   }
                   mFileName = mediaStorageDir.getPath() + File.separator
                           + "output-%s.mp4";
                   System.out.println("final filename : "
                           + mediaStorageDir.getPath() + File.separator
                           + "output-%s.mp4" + "names of files : " + name);
                   single_video = false;
                   return name;
               } else {
                   single_video = true;
                   name = file_path.get(0);
                   return name;
               }
    </track></track></track></track>

    Error :

    The Error that I am facing while trying to merge the videos generated via Images and a normal video is

    12-15 12:26:06.155  26022-26111/? W/System.err﹕ java.io.IOException: Cannot append com.googlecode.mp4parser.authoring.Mp4TrackImpl@45417c38 to com.googlecode.mp4parser.authoring.Mp4TrackImpl@44ffac60 since their Sample Description Boxes differ
    12-15 12:26:06.155  26022-26111/? W/System.err﹕ at com.googlecode.mp4parser.authoring.tracks.AppendTrack.<init>(AppendTrack.java:48)
    </init>

    Fix that I tried :

    Google advised me to change the CODEC in JavaCV from avcodec.AV_CODEC_ID_MPEG4 to avcodec.AV_CODEC_ID_H264. But when I did that, I am not able to get the video from images thereby throwing the following error :

    12-15 12:26:05.840  26022-26089/? W/linker﹕ libavcodec.so has text relocations. This is wasting memory and is a security risk. Please fix.
    12-15 12:26:05.975  26022-26089/? W/System.err﹕ com.googlecode.javacv.FrameRecorder$Exception: avcodec_open2() error -1: Could not open video codec.
    12-15 12:26:05.975  26022-26089/? W/System.err﹕ at com.googlecode.javacv.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:492)
    12-15 12:26:05.975  26022-26089/? W/System.err﹕ at com.googlecode.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:267)

    What I need :

    Creating video from Images is inevitable and that video will definitely be used to merge with other videos which might have any Codec Formats. So I need to find a way to merge any kind of videos irrespective of their Codecs or any other parameters. I am trying to keep it simple by just using the Jars and SO files and I dont want to drive myself crazy by going on a full scale implementation of FFMPEG Library. That being said, I am also ready to look into that library if I dont have any other ways to achieve what I want but a solid resource with an ALMOST working code would be much appreciated. Cheers.

    Update :
    I looked upon the issues mentioned at GitHub of OpenCV, but didnt find anything solid from it.
    OpenCV Issues

  • FFmpeg "Unrecognized option" error when trying to merge 2 audio files in Android

    20 mars 2017, par Sha

    Looked at This and This links to create a command to merge 2 audio files using ffmpeg but it’s not working.

    My command :

    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|c0code>

    The console output :

    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|c0io.whispero.soundmerger E/onProgress: Error splitting the argument list: Option not found

    From what I can understand is that ffmpeg is unable to split and differentiate the inputs, filter and output from the command, but I tried with a lot of variations, still not working :(

    Please help. Looked around a lot but none of the commands is working.

    Thanks in advance !

    EDIT :
    Added -report before -filter_complex and ran. LOG is below AS @Mulvya asked

    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