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• Cannot execute ffmpeg command with Java

  12 octobre 2022, par Peter Tran

  I am trying to execute ffmpeg command to add overlay text on existing video

  


  ffmpeg command on shell which is working fine :

  


  ffmpeg -i "/Users/test/video.mp4" -vf "drawtext=text='Testing':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2" -codec:a copy "/Users/test/output.mp4"


  


  Shell OUTPUT

  


  fmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers


  


  built with Apple clang version 14.0.0 (clang-1400.0.29.102)
configuration : —prefix=/opt/homebrew/Cellar/ffmpeg/5.1.2 —enable-shared —enable-pthreads —enable-version3 —cc=clang —host-cflags= —host-ldflags= —enable-ffplay —enable-gnutls —enable-gpl —enable-libaom —enable-libbluray —enable-libdav1d —enable-libmp3lame —enable-libopus —enable-librav1e —enable-librist —enable-librubberband —enable-libsnappy —enable-libsrt —enable-libtesseract —enable-libtheora —enable-libvidstab —enable-libvmaf —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libxvid —enable-lzma —enable-libfontconfig —enable-libfreetype —enable-frei0r —enable-libass —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libspeex —enable-libsoxr —enable-libzmq —enable-libzimg —disable-libjack —disable-indev=jack —enable-videotoolbox —enable-neon
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat 59. 27.100 / 59. 27.100
libavdevice 59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc 56. 6.100 / 56. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/test/video.mp4' :
...

  


  but when running above command with Java, the output video is not generated

  


  Java code

  


  @Test
public void generateVideo2() throws IOException, IOException {
    String fileNameFullPath= "/Users/test/video.mp4";
    String[] videoCmd = new String[]
            {"/bin/sh", "-c", "/opt/homebrew/Cellar/ffmpeg/5.1.2/bin/ffmpeg",
                    "-i",
                    fileNameFullPath,
                    "-vf",
                    "drawtext=text='Testing':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2",
                    "-codec:a copy",
                    "/Users/test/output.mp4"
            };
    Process processDuration = new ProcessBuilder().command(videoCmd).start();
    StringBuilder strBuild = new StringBuilder();
    try (BufferedReader processOutputReader = new BufferedReader(new InputStreamReader(processDuration.getInputStream(), Charset.defaultCharset()));) {
        String line;
        while ((line = processOutputReader.readLine()) != null) {
            strBuild.append(line).append(System.lineSeparator());
        }
        int i = processDuration.waitFor();
        System.out.println("Process exitValue: "+i);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
}


  


  JAVA OUTPUT

  


  Process exitValue : 1

  


  Process finished with exit code 0

  


  Does anyone have any idea ?

  


• Audio on TS File Falls Progressively Out of Sync

  8 août 2021, par Steve Brown

  I would really appreciate some help with this...

  


  I have a .ts file I've downloaded from the internet, when I play in Quicktime the video progressively falls behind the audio. It becomes noticeable after a couple of minutes and is a few seconds out after about ten minutes. It plays fine in VLC, but I want to be able to play on my AppleTV which does the same as Quicktime.

  


  I've tried everything I can think of to resolve...

  


  

  • Convert with VLC, which does work, but every few seconds the audio skips.

  


  • Convert with Handbrake, which again works, but every few seconds the audio skips like with VLC.

  


  • Convert with FFMpeg using -async, but I get the same result again with the audio skips.

  


  • Extracted the audio and video to two separate files and recreated a new file with FFMpeg, this makes no difference and is the same as playing the original file.

  


  • Tried "stretching" the audio with FFMpeg using "aresample=async=1000", which synchronises but the audio is distorted.

  


  


  I think the audio skips I'm getting from the -async option are caused because the audio is being trimmed to sync with the video. What I want to do is adjust the video to fit with the audio and leave the audio unchanged.

  


  I've tried to do this with -vsync, but the the results are the same as the original file. The FFMpeg user guide says the following :

  


  With -map you can select from which stream the timestamps should be taken. You can leave either video or audio unchanged and sync the remaining stream(s) to the unchanged one.

  


  But I cannot figure out the syntax. This is what I'm trying but the output is the same as the original...

  


  ffmpeg -vsync 1 -I test.ts -map 0:1 -map 0:0 -y test.mp4

  


  I've tried the above using vsync with 0, 1 and 2, but the result is still the same.

  


  Could anyone please help me with the syntax to sync the video stream to the audio stream and leave the audio unchanged ? Or suggest an alternative method I could use ?

  


  Any help would be really, really appreciated. Thanks.

  


  Here is the ffprobe for test.ts...

  


  ffprobe version 4.4 Copyright (c) 2007-2021 the FFmpeg developers
built with Apple clang version 12.0.0 (clang-1200.0.32.29)
configuration : —prefix=/usr/local/Cellar/ffmpeg/4.4_1 —enable-shared —enable-pthreads —enable-version3 —enable-avresample —cc=clang —host-cflags= —host-ldflags= —enable-ffplay —enable-gnutls —enable-gpl —enable-libaom —enable-libbluray —enable-libdav1d —enable-libmp3lame —enable-libopus —enable-librav1e —enable-librubberband —enable-libsnappy —enable-libsrt —enable-libtesseract —enable-libtheora —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libxvid —enable-lzma —enable-libfontconfig —enable-libfreetype —enable-frei0r —enable-libass —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libspeex —enable-libsoxr —enable-libzmq —enable-libzimg —disable-libjack —disable-indev=jack —enable-videotoolbox
libavutil 56. 70.100 / 56. 70.100
libavcodec 58.134.100 / 58.134.100
libavformat 58. 76.100 / 58. 76.100
libavdevice 58. 13.100 / 58. 13.100
libavfilter 7.110.100 / 7.110.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 9.100 / 5. 9.100
libswresample 3. 9.100 / 3. 9.100
libpostproc 55. 9.100 / 55. 9.100
Input #0, mpegts, from 'TEst.ts' :
Duration : 02:13:05.51, start : 1.406000, bitrate : 4579 kb/s
Program 1
Metadata :
service_name : Service01
service_provider : FFmpeg
Stream #0:0[0x100] : Video : h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080, 23.98 tbr, 90k tbn, 1411200000.00 tbc
Stream #0:1[0x101] : Audio : aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 195 kb/s

  


• FFMPEG [mp3float @ 0x7fd42f813200] Header missing

  10 février 2021, par rahi82

  I have a problem with some mp3 files. When transcoding the file with FFMPEG I get the following error :

  


  [mp3float @ 0x7fd42f813200] Header missing
Error while decoding stream #0:0: Invalid data found when processing input


  


  Is this a problem of the file itself, and how it is produced ?
Or is it a problem of FFMPEG ?

  


  Here full decoding message :

  


  ffmpeg version git-2020-07-28-dfd12ee Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.16)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-dfd12ee_2 --enable-shared --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-demuxer=dash --disable-libjack --disable-indev=jack --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libfdk-aac --enable-nonfree
  libavutil      56. 57.100 / 56. 57.100
  libavcodec     58. 97.102 / 58. 97.102
  libavformat    58. 49.100 / 58. 49.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[mp3 @ 0x7fd42f808200] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'Ice Mc - Think About The Way.mp3':
  Metadata:
    title           : Think About The Way
    TBPM            : 133
    artist          : Ice MC
    date            : 1994
    track           : 4/15
    disc            : 0
    album_artist    : ICE MC
  Duration: 00:04:16.39, start: 0.000000, bitrate: 323 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 320 kb/s
    Stream #0:1: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 600x592 [SAR 72:72 DAR 75:74], 90k tbr, 90k tbn, 90k tbc (attached pic)
    Metadata:
      comment         : Other
Stream mapping:
  Stream #0:1 -> #0:0 (mjpeg (native) -> wrapped_avframe (native))
  Stream #0:0 -> #0:1 (mp3 (mp3float) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, null, to 'pipe:':
  Metadata:
    title           : Think About The Way
    TBPM            : 133
    artist          : Ice MC
    date            : 1994
    track           : 4/15
    disc            : 0
    album_artist    : ICE MC
    encoder         : Lavf58.49.100
    Stream #0:0: Video: wrapped_avframe, yuvj420p(progressive), 600x592 [SAR 72:72 DAR 75:74], q=2-31, 200 kb/s, 90k fps, 90k tbn, 90k tbc (attached pic)
    Metadata:
      comment         : Other
      encoder         : Lavc58.97.102 wrapped_avframe
    Stream #0:1: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    Metadata:
      encoder         : Lavc58.97.102 pcm_s16le
[mp3float @ 0x7fd42f813200] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:04:16.60 bitrate=N/A speed= 725x    
video:1kB audio:44204kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


  


  What is also noticed is that this mp3 has the cover embedded as a video stream. And there is also this weird cross mapping. Not sure if that is normal ?