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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!

• Compiling tutorial programs on FFMPEG

  29 janvier 2012, par iwant2learn

  How do i compile the sample programs given in FFMPEG. i am not able to compile as i get
  error as CODEC_TYPE_VIDEO undeclared. Can any one please suggest me how to compile the programs. I am using ubuntu 11.

  This is the first example :

  $ gcc -o tutorial01 tutorial01.c -lavutil -lavformat -lavcodec -lz

  This is the output I got :

  tutorial01.c: In function ‘main’: tutorial01.c:77:3: warning: ‘dump_format’ is deprecated (declared at /usr/local/include/libavformat/avformat.h:1462)
  
  tutorial01.c:82:51: error: ‘CODEC_TYPE_VIDEO’ undeclared (first use in this function)
  
  tutorial01.c:82:51: note: each undeclared identifier is reported only once for each function it appears in

  Version info :

  ffmpeg version git-N-30430-ga52f598, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on May 31 2011 14:21:08 with gcc 4.5.2
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil    51.  3. 0 / 51.  3. 0
  
    libavcodec   53.  6. 1 / 53.  6. 1
  
    libavformat  53.  2. 0 / 53.  2. 0
  
    libavdevice  53.  1. 0 / 53.  1. 0
  
    libavfilter   2. 11. 0 /  2. 11. 0
  
    libswscale    0. 14. 0 /  0. 14. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0

• php ffmpeg flv conversion error

  8 juillet 2013, par arjun

  I am trying to convert mp4 file to flv but i am getting 0 size flv files,

  can you please help me out on this

  array(45)  [0]=string(72) "FFmpeg version SVN-r26402, Copyright (c)
  2000-2011 the FFmpeg developers" [1]=string(74) " built on Jan 12
  2012 16:07:49 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)" [2]=>
  string(98) " configuration : —enable-libmp3lame —enable-gpl
  
  — enable-libvorbis —disable-mmx —enable-shared" [3]=string(35) " libavutil 50.36. 0 / 50.36. 0" [4]=string(35) " libavcore 0.16. 1 /
  0.16. 1" [5]=string(37) " libavcodec 52.108. 0 / 52.108. 0" [6]=string(35) " libavformat 52.93. 0 / 52.93. 0" [7]=string(35) "
  libavdevice 52. 2. 3 / 52. 2. 3" [8]=string(35) " libavfilter 1.74.
  0 / 1.74. 0" [9]=string(35) " libswscale 0.12. 0 / 0.12. 0" [10]=>
  string(0) "" [11]=string(101) "Seems stream 0 codec frame rate
  differs from container frame rate : 30000.00 (30000/1) -15.00 (15/1)"
  [12]=string(106) "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
  '16112007069.mp4' :"
  [13]=string(11) " Metadata :" [14]=string(26) " major_brand : mp42"
  [15]=string(23) " minor_version : 0" [16]=string(35) "
  compatible_brands : mp423gp4isom" [17]=string(41) " creation_time :
  2007-11-16 15:44:57" [18]=string(59) " Duration : 00:00:32.64, start :
  0.000000, bitrate : 562 kb/s" [19]=string(115) " Stream #0.0(und) : Video : mpeg4, yuv420p, 352x288 [PAR 1:1 DAR 11:9], 512 kb/s, 15 fps,
  15 tbr, 30k tbn, 30k tbc" [20]=string(13) " Metadata :" [21]=>
  string(43) " creation_time : 2007-11-16 15:44:57" [22]=string(62) "
  Stream #0.1(und) : Audio : aac, 16000 Hz, mono, s16, 48 kb/s" [23]=>
  string(13) " Metadata :" [24]=string(43) " creation_time : 2007-11-16
  15:44:58" [25]=string(87) "WARNING : The bitrate parameter is set too
  low. It takes bits/s as argument, not kbits/s" [26]=string(47)
  "[buffer @ 0x94a9de0] w:352 h:288 pixfmt:yuv420p" [27]=string(98)
  "[libmp3lame @ 0x94a9560] flv does not support that sample rate,
  choose from (44100, 22050, 11025)." [28]=string(85) "Output #0, flv,
  to '16112007069.flv' :" [29]=string(11) " Metadata :" [30]=string(26) " major_brand : mp42"
  [31]=string(23) " minor_version : 0" [32]=string(35) "
  compatible_brands : mp423gp4isom" [33]=string(41) " creation_time :
  2007-11-16 15:44:57" [34]=string(33) " encoder : Lavf52.93.0" [35]=>
  string(103) " Stream #0.0(und) : Video : flv, yuv420p, 352x288 [PAR 1:1
  DAR 11:9], q=2-31, 200 kb/s, 1k tbn, 15 tbc" [36]=string(13) "
  Metadata :" [37]=string(43) " creation_time : 2007-11-16 15:44:57"
  [38]=string(68) " Stream #0.1(und) : Audio : libmp3lame, 16000 Hz,
  mono, s16, 0 kb/s" [39]=string(13) " Metadata :" [40]=string(43) "
  creation_time : 2007-11-16 15:44:58" [41]=string(15) "Stream
  mapping :" [42]=string(21) " Stream #0.0 -#0.0" [43]=string(21) "
  Stream #0.1 -#0.1" [44]=string(72) "Could not write header for
  output file #0 (incorrect codec parameters ?)"  
  ffmpeg : /usr/local/bin/ffmpeg file
  path : 16112007069.mp4
  srcAR : 16000
  srcAB:48
  dimention : 352 x 288 destFile : 16112007069.flv
  

  coding part : :)

  $srcFile = "/file destination/16112007069.mp4";  
  
  $destFile = "/file destination/16112007069.flv"; 
  
  $ffmpegPath = "/usr/local/bin/ffmpeg"; 
  
  
  
  $ffmpegObj = new ffmpeg_movie($srcFile); 
  
  
  
  $srcWidth = makeMultipleTwo($ffmpegObj->getFrameWidth());  
  
  $srcHeight = makeMultipleTwo($ffmpegObj->getFrameHeight());
  
  $srcFPS = $ffmpegObj->getFrameRate();  
  
  $srcAB = intval($ffmpegObj->getAudioBitRate());   
  
  $srcAR => $ffmpegObj->getAudioSampleRate();  
  
  
  
  exec($ffmpegPath . " -i " . $srcFile . " -ar " . $srcAR . " -ab " . $srcAB . " -f flv -s " . $srcWidth . "x" . $srcHeight . " " . $destFile . " 2>&1", $output); 
  
  
  
  var_dump($output);
  
  
  
  print "<br />ffmpeg: $ffmpegPath<br />"; print "file path: $srcFile<br />"; print "srcAR: $srcAR<br />"; print "srcAB: $srcAB<br />"; print
  
  "dimention: $srcWidth x $srcHeight<br />"; print "destFile:
  
  $destFile<br />";
  
  
  
  
  
  function makeMultipleTwo ($value)  { 
  
      $sType = gettype($value/2); 
  
      if($sType == "integer") 
  
      { 
  
          return $value; 
  
      } else { 
  
          return ($value-1); 
  
      }  
  
  }

  Note I added :

  if($srcAR<41000){ $srcAR = "41000"; }

  Above and its working !