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• How to create a video from image buffers using fluent-ffmpeg ?

  23 juin 2016, par Zacky Pickholz

  I’ve been trying to create a slideshow from a series of images using nodejs + fluent-ffmpeg, however it is not working well or consistently. ffmpeg occasionally emits "Error : ffmpeg exited with code 1 : pipe:0 : Invalid data found when processing input", and in case an eventual video (mp4) is created it seems to be missing images/frames.

  The process is as follows : images are loaded into memory, transformed resized to same dimensions using lwip, written sequentially into a passthrough stream, which is fed to ffmpeg as input.

  Relevant code snippets :

  var lwip = require('lwip');
  
  var ffmpeg = require('fluent-ffmpeg');
  
  var stream = require('stream');
  
  var imagesStream = new stream.PassThrough();
  
  
  
  ...
  
  
  
  image.batch()
  
              .contain(options.video.width, options.video.height, 'lanczos')
  
              .toBuffer(options.frames.format, {quality: 100}, (err, buffer) => {
  
                  if (err) {
  
                      throw ('error convering image to buffer. ' + err);
  
                  }
  
                  imagesStream.write(buffer, 'utf8');
  
                  resolve();
  
              });
  
  
  
  ...
  
  
  
      ffmpeg(imagesStream)
  
          .inputOptions('-framerate 1/' + options.frames.secsPerImage)
  
          .input(path.join(AUDIO_ROOT, options.audio.track))
  
          .save(path.join(path.join(OUTPUT_FOLDER, `${options.video.output.prefix}${timestamp}.${options.video.output.format}`)))
  
          .size(`${options.video.width}x${options.video.height}`)
  
          .on('start', () => {
  
              console.log('creating the clip now...')
  
          })
  
          .on('progress', (progress) => {
  
              var progPercent = Math.round(100 * progress.frames / (numImages * options.frames.secsPerImage * 25));
  
              progPercent = Math.min(progPercent, 100);
  
              console.log(`processing: ${progPercent}% done`)
  
          })
  
          .on('stderr', (line) => {
  
              console.error('ffmpeg error: ' + line);
  
          })
  
          .on('error', (error) => {
  
              reject('ffmpeg transcoding error: ' + error);
  
          })
  
          .on('end', () => {
  
              console.log('done!');
  
              resolve(true);
  
          })
  
          .run();

  And here is the output :

  "C:\Program Files (x86)\JetBrains\WebStorm 2016.1.1\bin\runnerw.exe" "C:\Program Files\nodejs\node.exe" vm2.js
  
  image count: 18
  
  image count: 6
  
  creating the clip now...
  
  ffmpeg error: ffmpeg version N-80335-gcb46b78 Copyright (c) 2000-2016 the FFmpeg developers
  
  ffmpeg error:   built with gcc 5.4.0 (GCC)
  
  ffmpeg error:   configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
  ffmpeg error:   libavutil      55. 24.100 / 55. 24.100
  
  ffmpeg error:   libavcodec     57. 46.100 / 57. 46.100
  
  ffmpeg error:   libavformat    57. 38.100 / 57. 38.100
  
  ffmpeg error:   libavdevice    57.  0.101 / 57.  0.101
  
  ffmpeg error:   libavfilter     6. 46.101 /  6. 46.101
  
  ffmpeg error:   libswscale      4.  1.100 /  4.  1.100
  
  ffmpeg error:   libswresample   2.  1.100 /  2.  1.100
  
  ffmpeg error:   libpostproc    54.  0.100 / 54.  0.100
  
  creating the clip now...
  
  ffmpeg error: ffmpeg version N-80335-gcb46b78 Copyright (c) 2000-2016 the FFmpeg developers
  
  ffmpeg error:   built with gcc 5.4.0 (GCC)
  
  ffmpeg error:   configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
  ffmpeg error:   libavutil      55. 24.100 / 55. 24.100
  
  ffmpeg error:   libavcodec     57. 46.100 / 57. 46.100
  
  ffmpeg error:   libavformat    57. 38.100 / 57. 38.100
  
  ffmpeg error:   libavdevice    57.  0.101 / 57.  0.101
  
  ffmpeg error:   libavfilter     6. 46.101 /  6. 46.101
  
  ffmpeg error:   libswscale      4.  1.100 /  4.  1.100
  
  ffmpeg error:   libswresample   2.  1.100 /  2.  1.100
  
  ffmpeg error:   libpostproc    54.  0.100 / 54.  0.100
  
  ffmpeg error: pipe:0: Invalid data found when processing input
  
  ffmpeg error: 
  
  an error has occurred: ffmpeg transcoding error: Error: ffmpeg exited with code 1: pipe:0: Invalid data found when processing input
  
  
  
  ffmpeg error: [jpeg_pipe @ 0000000000308fe0] Format jpeg_pipe detected only with low score of 6, misdetection possible!
  
  ffmpeg error: Input #0, jpeg_pipe, from 'pipe:0':
  
  ffmpeg error:   Duration: N/A, bitrate: N/A
  
  ffmpeg error:     Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080 [SAR 1:1 DAR 16:9], 0.33 tbr, 0.33 tbn, 0.33 tbc
  
  ffmpeg error: [mp3 @ 0000000002fa0720] Estimating duration from bitrate, this may be inaccurate
  
  ffmpeg error: Input #1, mp3, from 'audio\avicii.mp3':
  
  ffmpeg error:   Metadata:
  
  ffmpeg error:     album           : True
  
  ffmpeg error:     genre           : House
  
  ffmpeg error:     copyright       : ℗ 2013 Avicii Music AB, / PRMD under exclusive license to Universal Music AB
  
  ffmpeg error:     encoded_by      : Oz
  
  ffmpeg error:     title           : Wake Me Up
  
  ffmpeg error:     artist          : Avicii
  
  ffmpeg error:     album_artist    : Avicii
  
  ffmpeg error:     disc            : 1/1
  
  ffmpeg error:     track           : 1/12
  
  ffmpeg error:     TYER            : 2013-09-13T07:00:00Z
  
  ffmpeg error:   Duration: 00:04:09.73, start: 0.000000, bitrate: 321 kb/s
  
  ffmpeg error:     Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
  
  ffmpeg error:     Stream #1:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 600x600 [SAR 305:305 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
  
  ffmpeg error:     Metadata:
  
  ffmpeg error:       comment         : Cover (front)
  
  ffmpeg error: No pixel format specified, yuvj420p for H.264 encoding chosen.
  
  ffmpeg error: Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  ffmpeg error: [libx264 @ 000000000030e860] using SAR=1/1
  
  ffmpeg error: [libx264 @ 000000000030e860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  ffmpeg error: [libx264 @ 000000000030e860] profile High, level 4.0
  
  ffmpeg error: [libx264 @ 000000000030e860] 264 - core 148 r2694 3b70645 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  ffmpeg error: [mp4 @ 0000000002ec6980] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  ffmpeg error:     Last message repeated 1 times
  
  ffmpeg error: Output #0, mp4, to 'output\clip_2016-06-22_06-17-25.mp4':
  
  ffmpeg error:   Metadata:
  
  ffmpeg error:     encoder         : Lavf57.38.100
  
  ffmpeg error:     Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
  ffmpeg error:     Metadata:
  
  ffmpeg error:       encoder         : Lavc57.46.100 libx264
  
  ffmpeg error:     Side data:
  
  ffmpeg error:       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  ffmpeg error:     Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
  
  ffmpeg error:     Metadata:
  
  ffmpeg error:       encoder         : Lavc57.46.100 aac
  
  ffmpeg error: Stream mapping:
  
  ffmpeg error:   Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  ffmpeg error:   Stream #1:0 -> #0:1 (mp3 (native) -> aac (native))
  
  ffmpeg error: frame=   75 fps=0.0 q=28.0 size=       0kB time=00:00:00.64 bitrate=   0.6kbits/s dup=74 drop=0 speed=1.09x    
  
  processing: 17% done
  
  ffmpeg error: frame=  150 fps= 97 q=28.0 size=     371kB time=00:00:03.64 bitrate= 835.6kbits/s dup=148 drop=0 speed=2.35x    
  
  processing: 33% done
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 73 q=28.0 size=     879kB time=00:00:07.36 bitrate= 977.8kbits/s dup=148 drop=0 speed= 3.6x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 59 q=28.0 size=     952kB time=00:00:18.36 bitrate= 424.7kbits/s dup=148 drop=0 speed=7.21x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 49 q=28.0 size=    1190kB time=00:00:32.99 bitrate= 295.3kbits/s dup=148 drop=0 speed=10.8x    
  
  ffmpeg error: frame=  150 fps= 42 q=28.0 size=    1409kB time=00:00:46.64 bitrate= 247.4kbits/s dup=148 drop=0 speed=13.1x    
  
  processing: 33% done
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 37 q=28.0 size=    1628kB time=00:01:00.30 bitrate= 221.1kbits/s dup=148 drop=0 speed=14.9x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 33 q=28.0 size=    1878kB time=00:01:15.83 bitrate= 202.8kbits/s dup=148 drop=0 speed=16.7x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 30 q=28.0 size=    2130kB time=00:01:31.64 bitrate= 190.4kbits/s dup=148 drop=0 speed=18.2x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 27 q=28.0 size=    2375kB time=00:01:47.18 bitrate= 181.5kbits/s dup=148 drop=0 speed=19.3x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 25 q=28.0 size=    2626kB time=00:02:03.15 bitrate= 174.7kbits/s dup=148 drop=0 speed=20.4x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 23 q=28.0 size=    2832kB time=00:02:16.20 bitrate= 170.3kbits/s dup=148 drop=0 speed=20.8x    
  
  ffmpeg error: frame=  150 fps= 21 q=28.0 size=    3063kB time=00:02:30.34 bitrate= 166.9kbits/s dup=148 drop=0 speed=21.3x    
  
  processing: 33% done
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 20 q=28.0 size=    3298kB time=00:02:44.93 bitrate= 163.8kbits/s dup=148 drop=0 speed=21.8x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 19 q=28.0 size=    3522kB time=00:02:58.93 bitrate= 161.3kbits/s dup=148 drop=0 speed=22.2x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 18 q=28.0 size=    3792kB time=00:03:15.83 bitrate= 158.6kbits/s dup=148 drop=0 speed=22.9x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 17 q=28.0 size=    4035kB time=00:03:31.11 bitrate= 156.6kbits/s dup=148 drop=0 speed=23.3x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 16 q=28.0 size=    4294kB time=00:03:47.62 bitrate= 154.5kbits/s dup=148 drop=0 speed=23.8x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 15 q=28.0 size=    4566kB time=00:04:04.87 bitrate= 152.7kbits/s dup=148 drop=0 speed=24.4x    
  
  processing: 33% done
  
  ffmpeg error: frame=  150 fps= 14 q=-1.0 Lsize=    4851kB time=00:04:09.73 bitrate= 159.1kbits/s dup=148 drop=0 speed=23.6x    
  
  ffmpeg error: video:826kB audio:3978kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.967442%
  
  ffmpeg error: [libx264 @ 000000000030e860] frame I:2     Avg QP:14.53  size:414604
  
  ffmpeg error: [libx264 @ 000000000030e860] frame P:38    Avg QP:16.59  size:   222
  
  ffmpeg error: [libx264 @ 000000000030e860] frame B:110   Avg QP:12.67  size:    69
  
  ffmpeg error: [libx264 @ 000000000030e860] consecutive B-frames:  1.3%  2.7%  0.0% 96.0%
  
  ffmpeg error: [libx264 @ 000000000030e860] mb I  I16..4: 25.5% 49.4% 25.1%
  
  ffmpeg error: [libx264 @ 000000000030e860] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.7%  0.0%  0.0%  0.0%  0.0%    skip:99.2%
  
  ffmpeg error: [libx264 @ 000000000030e860] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%  L0: 1.2% L1:98.8% BI: 0.0%
  
  ffmpeg error: [libx264 @ 000000000030e860] 8x8 transform intra:49.4% inter:92.1%
  
  ffmpeg error: [libx264 @ 000000000030e860] coded y,uvDC,uvAC intra: 74.2% 73.7% 69.0% inter: 0.0% 0.2% 0.0%
  
  ffmpeg error: [libx264 @ 000000000030e860] i16 v,h,dc,p: 97%  0%  2%  1%
  
  ffmpeg error: [libx264 @ 000000000030e860] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 19% 15%  7%  9%  7% 10%  7% 13%
  
  ffmpeg error: [libx264 @ 000000000030e860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 21%  8%  8% 11%  9% 12%  7% 13%
  
  ffmpeg error: [libx264 @ 000000000030e860] i8c dc,h,v,p: 55% 19% 16% 10%
  
  ffmpeg error: [libx264 @ 000000000030e860] Weighted P-Frames: Y:0.0% UV:0.0%
  
  ffmpeg error: [libx264 @ 000000000030e860] ref P L0: 95.4%  0.6%  3.1%  0.9%
  
  ffmpeg error: [libx264 @ 000000000030e860] ref B L1: 98.8%  1.2%
  
  ffmpeg error: [libx264 @ 000000000030e860] kb/s:1127.01
  
  ffmpeg error: [aac @ 0000000002ecc880] Qavg: 541.237
  
  ffmpeg error: 
  
  done!

• Compensating for missing audio frames in video with ffmpeg [on hold]

  9 décembre 2015, par Ned Rockson

  I consistently have a problem with videos recorded via webrtc where the audio is missing for the first few seconds. With ffmpeg I see that the first audio frame is generally at PTS >1.0.

  This doesn’t cause an issue in isolation as video players are smart enough to adjust, but when using ffmpeg to merge two videos and mix their audio, they end up having offset audio because each audio stream is treated as starting at 0.

  Is there a way to compensate for this offset when using amerge or amix filters ?

• ffmpeg 2nd pass segfault

  25 février 2014, par Mike Flynn

  I'm trying to get an old transcoding server up and running in a new environment and I'm experiencing some issues getting the well tested ffmpeg commands to work in the new environment.

  It's a 2 pass encoding strategy, and the first pass runs just fine every time, the 2nd pass consistently fails with the following :

  [libx264 @ 0x3925fc0] 2nd pass has more frames than 1st pass (1478)
  
  [libx264 @ 0x3925fc0] continuing anyway, at constant QP=14
  
  [libx264 @ 0x3925fc0] disabling adaptive B-frames
  
  [libx264 @ 0x3925fc0] specified frame type is not compatible with max B-frames
  
  Segmentation fault

  Here is the command we're using for each pass :

  Pass 1 :

  ffmpeg -y -i input.mp4 -pass 1 -b 774000 -ab 128000 -s 640x360 -passlogfile ffmpeglog -vcodec libx264 -g 90 -bf 3 -refs 1 -b_strategy 1 -coder 1 -qmin 10 -qmax 51 -sc_threshold 40 -flags +loop -cmp chroma -me_range 16 -me_method dia -subq 2 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -direct-pred 3 -trellis 0 -partitions -parti8x8-parti4x4-partp8x8-partb8x8 -r 30 -keyint_min 25 -wpredp 2 -rc_lookahead 50 -acodec libfaac -ar 44100 pass1.mp4

  Pass 2 :

  ffmpeg -y -i pass1.mp4 -pass 2 -b 774000 -ab 128000 -s 640x360 -passlogfile ffmpeglog -vcodec libx264 -g 90 -bf 3 -refs 8 -b_strategy 1 -coder 1 -qmin 10 -qmax 51 -sc_threshold 40 -flags +loop -cmp chroma -me_range 16 -me_method umh -subq 9 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -direct-pred 3 -trellis 2 -partitions +parti8x8+parti4x4+partp8x8+partp4x4+partb8x8 -r 30 -keyint_min 25 -wpredp 2 -rc_lookahead 60 -acodec libfaac -ar 44100 pass2.mp4

  ...and here is my ffmpeg configuration :

  ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Feb 25 2014 19:23:21 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --enable-gpl --enable-libmp3lame --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-version3 --enable-libfaac --enable-nonfree
  
    libavutil      52. 48.101 / 52. 48.101
  
    libavcodec     55. 39.101 / 55. 39.101
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  Any ideas would be greatly appreciated !