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• Java execute ffmpeg commands with (pipe) "... -f nut - | ffmpeg -i - ..." just hangs

  18 mars 2019, par user3776738

  I can’t get this to run,because java just waits for ffmpeg. But ffmpeg doesn’t give an input- nor an error stream. It just runs, but doing nothing.

  The output of "System.out.println("command :.." insert into bash just runs fine as expected.So there is nothing wrong with the ffmpeg syntax.

  Here’s the code.

  package mypackage;
  
  
  
  import java.awt.image.BufferedImage;
  
  import java.io.BufferedReader;
  
  import java.io.IOException;
  
  import java.io.InputStreamReader;
  
  import javax.imageio.ImageIO;
  
  
  
  /**
  
   *
  
   * @author test
  
   */
  
  public class ffmpeg_hang {
  
  
  
          /**
  
       * @param args the command line arguments
  
       */
  
      public static void main(String[] args) throws IOException, InterruptedException {
  
          String INPUT_FILE="/path/to/media";
  
          String FFMPEG_PATH="/path/to/ffmpegFolder/";
  
  
  
              for(int i=0;(i+4)<40;i+=4){                
  
              String[] ffmpeg_pipe = new String[]{
  
                  FFMPEG_PATH + "ffmpeg_4.1.1",
  
                  "-ss",(i+""),"-t", "4",             
  
                  "-i", INPUT_FILE,                                        
  
                  "-ac", "1", "-acodec", "pcm_s16le", "-ar", "16000", 
  
                  "-f","nut","-","|",
  
                  FFMPEG_PATH + "ffmpeg_4.1.1",
  
                  "-i","-",
  
                  "-lavfi", "showspectrumpic=s=128x75:legend=disabled:saturation=0:stop=8000",
  
                  "-f","image2pipe","pipe:1"};
  
  
  
              System.out.println("command: "+String.join(" ", ffmpeg_pipe));
  
  
  
              Process p;
  
              //ffmpe wav->pipe->spectrogra->pipe->java
  
              p = Runtime.getRuntime().exec(ffmpeg_pipe);
  
  
  
  
  
              StringBuilder Boxbuffer = new StringBuilder();
  
              BufferedReader reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
  
              String line = "";
  
  
  
              while ((line = reader.readLine()) != null) {
  
                  Boxbuffer.append(line);
  
              }
  
  
  
  
  
              System.out.println("ffmpeg errors->> "+Boxbuffer.toString());
  
              p.waitFor();
  
  
  
  
  
              BufferedImage image = ImageIO.read(p.getInputStream());
  
              //do stuff with image
  
              }
  
  
  
      }
  
  
  
  }

• What is causing "unspecified pixel format" and "Error opening filters !" error in ffmpeg ?

  19 février 2019, par SJAndersonLA

  I’m writing an mp4 to HLS transcoding process that works as intended on files smaller than 7 gigabytes (sample size is 100 videos). When attempting to transcode anything larger than 7GB, it crashes.

  The command :

  ffmpeg 
  
    -i large_file.mp4 -y 
  
    -vf scale=w=1920:h=1080:force_original_aspect_ratio=decrease 
  
    -c:a aac 
  
    -ar 48000 
  
    -c:v h264 
  
    -profile:v main 
  
    -crf 20 
  
    -sc_threshold 0 
  
    -g 48 
  
    -keyint_min 48 
  
    -hls_time 4 
  
    -hls_playlist_type vod 
  
    -b:v 5000k 
  
    -maxrate 5350k 
  
    -bufsize 7500k 
  
    -b:a 192k 
  
    -hls_segment_filename /1080p_%03d.ts 
  
    -threads 0 
  
    /tmp/output-ef42dc65-1d3d-4682-b32b-68d7c712fb9c-raw-test/1080p.m3u8

  The error :

  ffmpeg version 3.2.12-1\x7edeb9u1 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  
    configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x555888d821c0] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 1280x720, 3856 kb/s): unspecified pixel format
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'large_file.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.26.101
  
    Duration: 05:56:12.51, start: 0.000000, bitrate: 4061 kb/s
  
      Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none, 1280x720, 3856 kb/s, 29.99 fps, 30 tbr, 100k tbn, 200k tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 194 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [buffer @ 0x555888d88180] Unable to parse option value "-1" as pixel format
  
      Last message repeated 1 times
  
  [buffer @ 0x555888d88180] Error setting option pix_fmt to value -1.
  
  [graph 0 input from stream 0:0 @ 0x555888d81e40] Error applying options to the filter.
  
  Error opening filters!

  The error says to try increasing analyzeduration and probesize, which I set to max value (based on an answer from this post), however that didn’t seem to change the behavior. I also suspected that the file was corrupted, but the fact that this is failing for all files larger than 7GB makes it more difficult to suggest its something not related to the size of the mp4.

• FFMPEG codec "Error opening filters" error on Windows server

  12 février 2019, par Frank Nicklin

  Im using NReco Videoconvertor on and asp.net web service but its failing with the error

  ****Error : Cannot convert media : Error opening filters !****

  When testing on my local development PC Windows 10 VS2017 it works fine. If I manually run ffmpeg as this too work fine

  ffmpeg -i c:\tempfolder\5239.hevc c:\tempfolder\5239.mp4. 

  However if I try the same from my Windows 2016 Server I get a could not find codec parameters error :-

    D:\webservice\Bin>ffmpeg -i d:\video\1234.hevc d:\video\5225.mp4
  
  ffmpeg version N-56060-gbcd1c20 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Sep  6 2013 00:42:37 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      52. 43.100 / 52. 43.100
  
    libavcodec     55. 31.101 / 55. 31.101
  
    libavformat    55. 16.101 / 55. 16.101
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 83.104 /  3. 83.104
  
    libswscale      2.  5.100 /  2.  5.100
  
    libswresample   0. 17.103 /  0. 17.103
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 028fa380] Could not find codec parameters for stream 0 (Video: none (hvc1 / 0x31637668), 352x288, 937 kb/s): unknown codec
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\video\1234.hevc':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 0
  
      compatible_brands: qt
  
      creation_time   : 2019-02-04 10:35:12
  
    Duration: 00:00:20.25, start: 0.000000, bitrate: 965 kb/s
  
      Stream #0:0(und): Video: none (hvc1 / 0x31637668), 352x288, 937 kb/s, 30.01 fps, 30 tbr, 600 tbn, 600 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        creation_time   : 2019-02-04 10:35:12
  
        handler_name    : Core Media Video
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 23 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-02-04 10:35:12
  
        handler_name    : Core Media Audio

  Any thoughts please.