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• How to get the output resolution after successful encode ?

  11 janvier 2021, par Daniel Birowsky Popeski

  I'm using fluent-ffmpeg and I'm already able to get the output resolution in the 'on end' event :

  


  createFfmpegCommand()
  .input(fs.createReadStream(readPath))
  .noAudio()
  .fps(30)
  .format('mp4')
  .videoCodec('libx264')
  .videoFilter([
   {filter: 'scale', options: '1920:1920:force_original_aspect_ratio=decrease'},
   {filter: 'setpts', options: '1.5*PTS'},
  ])
  .outputOption('-crf 30')
  .outputOption('-movflags frag_keyframe')
  .outputOption('-movflags +faststart')
  .output(mp4WriteStream)
  .on('start', () => console.log('processing started'))
  .on('error', err => console.error('err', err))
  .on('end', (_,res) => console.log('processing success',res))
  .run();


  


  However, i'd like it to be machine-readable (json or xml). Instead, it looks like this :

  


   ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.28)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_8 --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-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'pipe:0':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    creation_time   : 2020-05-28T09:51:18.000000Z
  Duration: 00:00:02.23, start: 0.000000, bitrate: N/A
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 9108 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2020-05-28T09:51:18.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      encoder         : AVC Coding
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
[libx264 @ 0x7f92d9808e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7f92d9808e00] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x7f92d9808e00] 264 - core 161 r3027 4121277 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=30.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'pipe:1':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    encoder         : Lavf58.45.100
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      creation_time   : 2020-05-28T09:51:18.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=   64 fps=0.0 q=36.0 size=       0kB time=00:00:00.16 bitrate=   1.7kbits/s dup=21 drop=0 speed=0.316x    
frame=  100 fps=0.0 q=-1.0 Lsize=     108kB time=00:00:03.23 bitrate= 274.7kbits/s dup=33 drop=0 speed=3.25x    
video:106kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.906519%
[libx264 @ 0x7f92d9808e00] frame I:1     Avg QP:25.71  size:  8782
[libx264 @ 0x7f92d9808e00] frame P:25    Avg QP:30.10  size:  2308
[libx264 @ 0x7f92d9808e00] frame B:74    Avg QP:27.92  size:   564
[libx264 @ 0x7f92d9808e00] consecutive B-frames:  1.0%  0.0%  3.0% 96.0%
[libx264 @ 0x7f92d9808e00] mb I  I16..4: 19.4% 77.2%  3.3%
[libx264 @ 0x7f92d9808e00] mb P  I16..4:  0.3%  0.8%  0.1%  P16..4:  4.6%  1.3%  0.4%  0.0%  0.0%    skip:92.5%
[libx264 @ 0x7f92d9808e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  4.0%  0.2%  0.0%  direct: 0.0%  skip:95.7%  L0:44.2% L1:54.8% BI: 1.0%
[libx264 @ 0x7f92d9808e00] 8x8 transform intra:75.0% inter:78.3%
[libx264 @ 0x7f92d9808e00] coded y,uvDC,uvAC intra: 8.8% 8.8% 2.4% inter: 0.3% 0.2% 0.0%
[libx264 @ 0x7f92d9808e00] i16 v,h,dc,p: 77%  7% 10%  6%
[libx264 @ 0x7f92d9808e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 48%  3% 42%  1%  1%  1%  1%  1%  1%
[libx264 @ 0x7f92d9808e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 16% 26%  7%  4%  4%  3%  5%  6%
[libx264 @ 0x7f92d9808e00] i8c dc,h,v,p: 89%  5%  5%  1%
[libx264 @ 0x7f92d9808e00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7f92d9808e00] ref P L0: 66.9% 11.1% 16.7%  5.3%
[libx264 @ 0x7f92d9808e00] ref B L0: 87.5%  9.9%  2.6%
[libx264 @ 0x7f92d9808e00] ref B L1: 96.4%  3.6%
[libx264 @ 0x7f92d9808e00] kb/s:259.80


  


  Which doesn't let me be comfortable that my regex to extract the output resolution is always going to work.

  


  Also, I don't wanna make another call/fileread just to get the resolution. Mainly because my files are stored in S3, where ffprobe doesn't work.

  


• How to deal with "Buffer queue overflow, dropping." (ffmpeg)

  1er mai 2015, par whitesiroi

  Sometimes it works great and sometimes I’m getting this message
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.

  by running this command
  ffmpeg -i a1.mp4 -i watermark150x125.png -filter_complex 'overlay=10:10' output.mp4

  I tried different variation of "overlay" like overlay=W-w-5:H-h-5, overlay=10:main_h-overlay_h-10, overlay=main_w-overlay_w-10:main_h-overlay_h-10 - getting the same result.

  Here is the output of the ffmpeg command.

  ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f952101d200] stream 0, timescale not set
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      artist          : a1
  
      album           :
  
      comment         : 
  
      date            : 0
  
      genre           :
  
      title           : a1
  
      encoder         : Lavf56.4.101
  
    Duration: 00:01:41.51, start: 0.000000, bitrate: 227 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 97 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 120x90 [SAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 90k tbc
  
  Input #1, png_pipe, from 'watermark150x125.png':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Video: png, rgba, 150x125 [SAR 2835:2835 DAR 6:5], 25 tbr, 25 tbn, 25 tbc
  
  [swscaler @ 0x7f9521013e00] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0x7f9521030e00] using SAR=1/1
  
  [libx264 @ 0x7f9521030e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7f9521030e00] profile High, level 2.1
  
  [libx264 @ 0x7f9521030e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      artist          : a1
  
      album           :
  
      comment         : 
  
      date            : 0
  
      genre           :
  
      title           : a1
  
      encoder         : Lavf56.25.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 426x240 [SAR 1:1 DAR 71:40], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
      Stream #0:1(und): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc56.26.100 libvo_aacenc
  
  Stream mapping:
  
    Stream #0:0 (h264) -> overlay:main (graph 0)
  
    Stream #0:2 (mjpeg) -> overlay:overlay (graph 0)
  
    overlay (graph 0) -> Stream #0:0 (libx264)
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
  
  Press [q] to stop, [?] for help
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 385 times
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 564 times
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 546 times
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 569 times
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 593 times
  
  [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
  
      Last message repeated 312 times
  
  frame= 3041 fps=645 q=-1.0 Lsize=    1800kB time=00:01:41.52 bitrate= 145.3kbits/s dup=2975 drop=0
  
  video:149kB audio:1587kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.700745%
  
  [libx264 @ 0x7f9521030e00] frame I:14    Avg QP:19.91  size:  6947
  
  [libx264 @ 0x7f9521030e00] frame P:768   Avg QP:10.30  size:    27
  
  [libx264 @ 0x7f9521030e00] frame B:2259  Avg QP:13.67  size:    15
  
  [libx264 @ 0x7f9521030e00] consecutive B-frames:  0.9%  0.1%  0.1% 98.9%
  
  [libx264 @ 0x7f9521030e00] mb I  I16..4: 18.7% 59.0% 22.3%
  
  [libx264 @ 0x7f9521030e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.9%
  
  [libx264 @ 0x7f9521030e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:99.9%  L0:50.7% L1:49.3% BI: 0.0%
  
  [libx264 @ 0x7f9521030e00] 8x8 transform intra:59.1% inter:31.9%
  
  [libx264 @ 0x7f9521030e00] coded y,uvDC,uvAC intra: 21.4% 12.4% 7.4% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x7f9521030e00] i16 v,h,dc,p: 39% 30% 30%  0%
  
  [libx264 @ 0x7f9521030e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 47% 16%  1%  0%  0%  1%  0%  1%
  
  [libx264 @ 0x7f9521030e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 38% 15%  3%  3%  3%  6%  4%  7%
  
  [libx264 @ 0x7f9521030e00] i8c dc,h,v,p: 80% 15%  4%  1%
  
  [libx264 @ 0x7f9521030e00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7f9521030e00] ref P L0: 96.5%  1.2%  2.3%
  
  [libx264 @ 0x7f9521030e00] ref B L0: 51.5% 48.5%
  
  [libx264 @ 0x7f9521030e00] ref B L1: 99.6%  0.4%
  
  [libx264 @ 0x7f9521030e00] kb/s:11.97

• ffmpeg : Command Execution failed

  29 janvier 2019, par PRABHJOT SINGH

  I am using this plugin plugin link and I am uploading mp4 videos and trying to compress the video on the server using node js FFmpeg module

  var vid = new ffmpeg( './' + req.file_name + '.mp4');
  
  vid.then(function (video) {
  
      video.setVideoSize('640x?', true, true)
  
          .save('./' + req.file_name + '_cp.mp4',
  
              function (err,file) {
  
                  if(err) {
  
                      res.send({status: 404, message: 'Unable to save video' })
  
                  } else {
  
                      revealCtrl.GetVideoData(req, res, next);
  
                  }
  
              })
  
  }, function (err) { });

  but it is not compressing my video and gives this error

  Here is the final command

  Command failed: ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex "scale=iw*sar:ih, pad=max(iw\,ih*(16/9)):ow/(16/9):(ow                                                                                                        -iw)/2:(oh-ih)/2" ./jrbze37i_cp.mp4 

  and here is the error

  Error: Command failed: ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex "scale=iw*sar:ih, pad=max(iw\,ih*(16/9)):ow/(16/9):(ow                                                                                                        -iw)/2:(oh-ih)/2" ./jrbze37i_cp.mp4
  
  ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg 
  
  developers
  
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
  
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build- 
  
  suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-                                                                                                        
  
  linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ -- 
  
  enable-gpl --enable-shared --disable-stripping --disable-decoder                                                                                                        
  
  =libopenjpeg --disable-decoder=libschroedinger --enable-avresample -- 
  
  enable-avisynth --enable-gnutls --enable-ladspa --enable-libass                                                                                                         
  
  --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio -- 
  
  enable-libflite --enable-libfontconfig --enable-libfreetype -                                                                                                        
  
  -enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug -- 
  
  enable-libmp3lame --enable-libopenjpeg --enable-libopus --en                                                                                                        
  
  able-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine 
  
  --enable-libsnappy --enable-libsoxr --enable-libspeex --ena                                                                                                        
  
  ble-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis -- 
  
  enable-libvpx --enable-libwavpack --enable-libwebp --enable-li                                                                                                        
  
  bx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl -- 
  
  enable-x11grab --enable-libdc1394 --enable-libiec61883 --en                                                                                                        
  
  able-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  
  libavutil      54. 31.100 / 54. 31.100
  
  libavcodec     56. 60.100 / 56. 60.100
  
  libavformat    56. 40.101 / 56. 40.101
  
  libavdevice    56.  4.100 / 56.  4.100
  
  libavfilter     5. 40.101 /  5. 40.101
  
  libavresample   2.  1.  0 /  2.  1.  0
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  2.101 /  1.  2.101
  
  libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './jrbze37i.mp4':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf58.26.100
  
  Duration: 00:00:53.22, start: 0.023220, bitrate: 1553 kb/s
  
  Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), 
  
  yuv420p, 1920x1080, 1418 kb/s, 30 fps, 30 tbr, 15360 tb                                                                                                        
  
  n, 60 tbc (default)
  
  Metadata:
  
    handler_name    : Core Media Video
  
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, 
  
  fltp, 128 kb/s (default)
  
  Metadata:
  
    handler_name    : Core Media Audio
  
  [libx264 @ 0x1567760] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 
  
  AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x1567760] profile High, level 4.0
  
  [libx264 @ 0x1567760] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC 
  
  codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html                                                                                                         
  
  - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 
  
  psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 tr                                                                                                        
  
  ellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 
  
  threads=1 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1                                                                                                         
  
  interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 
  
  b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 ke                                                                                                        
  
  yint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf 
  
  mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_r                                                                                                        
  
  atio=1.40 aq=1:1.00
  
  Output #0, mp4, to './jrbze37i_cp.mp4':
  
    Metadata:
  
   major_brand     : isom
  
   minor_version   : 512
  
   compatible_brands: isomiso2avc1mp41
  
   encoder         : Lavf56.40.101
  
   Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 
  
     1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
   Metadata:
  
    encoder         : Lavc56.60.100 libx264
  
   Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, 
  
   fltp, 128 kb/s (default)
  
   Metadata:
  
    handler_name    : Core Media Audio
  
    encoder         : Lavc56.60.100 aac
  
   Stream mapping:
  
     Stream #0:0 (h264) -> scale (graph 0)
  
     pad (graph 0) -> Stream #0:0 (libx264)
  
     Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
     Press [q] to stop, [?] for help
  
     Killed   42 fps=5.1 q=29.0 size=      94kB time=00:00:01.34 bitrate= 
  
      574.7kbits/s dup=1 drop=0
  
  
  
     at ChildProcess.exithandler (child_process.js:276:12)
  
     at emitTwo (events.js:126:13)
  
     at ChildProcess.emit (events.js:214:7)
  
     at maybeClose (internal/child_process.js:915:16)
  
     at Socket.stream.socket.on (internal/child_process.js:336:11)
  
     at emitOne (events.js:116:13)
  
     at Socket.emit (events.js:211:7)
  
     at Pipe._handle.close [as _onclose] (net.js:561:12)
  
   killed: false,
  
   code: 137,
  
   signal: null,
  
   cmd: 'ffmpeg -i ./jrbze37i.mp4  -strict -2  -filter_complex 
  
      "scale=iw*sar:ih, pad=max(iw\\,ih*(16/9)):ow/(16/9):(ow-iw)/2:(oh- 
  
     ih)/2 " ./jrbze37i_cp.mp4'

  My problem is that sometimes its work or sometimes it doesn’t work.