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• 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 !

• FFmpeg settings to convert MTS into MPG for YouTube

  17 juin 2013, par JJD

  I would like to discuss the optimal parameters for FFmpeg to convert an MTS video file with the following profile for the upload onto YouTube. YouTube published their suggested resolutions and bitrates settings.

  // Input video profile
  
  Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 50 tbc
  
  Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, s16, 256 kb/s

  Since YouTube has length restrictions to the videos I also want to cut the original file into pieces.

  Here is my current configuration to convert a video. I am running Ubuntu 10.10. with FFmpeg version git-2011-12-31-81980bf.

  ffmpeg -ss 00:15:00 -i input.mts -t 00:30:00 -vcodec libx264 -deinterlace -s hd720 -ab 128k -threads 0 output.mp4

  I also want to reencode the video since I do not want to upload the large files of the original recording.

• ffmpeg generating out of sync audio/video file

  2 mars 2013, par marcelorocks

  I am trying to convert a flv video to mp4 using a264, but the result video has a out of sync audio/video. Audio seems ok but video seems slow and therefore out of sync. I am a newbie on video conversion so any help is appreciated.

  Here is the command I am running :

  /opt/local/bin/ffmpeg -i complaint.flv -f mp4 -vcodec libx264 -acodec aac -copyts -strict experimental -fpre /opt/local/share/ffmpeg/libx264-lossless_slow.ffpreset -ab 44k -threads 0 -crf 23 complaint.mp4

  And the printout :

  Desktop  /opt/local/bin/ffmpeg -i complaint.flv -f mp4 -vcodec libx264 -acodec aac -copyts -strict experimental -fpre /opt/local/share/ffmpeg/libx264-lossless_slow.ffpreset -ab 44k -threads 0 -crf 23 complaint.mp4
  
  ffmpeg version 0.7.8, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Jan 12 2012 21:12:26 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
  
    configuration: --prefix=/opt/local --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libopenjpeg --enable-libxvid --enable-libx264 --enable-libvpx --enable-libspeex --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/gcc-4.2 --arch=x86_64 --enable-yasm
  
    libavutil    50. 43. 0 / 50. 43. 0
  
    libavcodec   52.123. 0 / 52.123. 0
  
    libavformat  52.111. 0 / 52.111. 0
  
    libavdevice  52.  5. 0 / 52.  5. 0
  
    libavfilter   1. 80. 0 /  1. 80. 0
  
    libswscale    0. 14. 1 /  0. 14. 1
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  [flv @ 0x7fe57a04ac00] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, flv, from 'complaint.flv':
  
    Metadata:
  
      duration        : 7
  
      creationdate    : Thu Jan 12 23:47:24
  
      description     : Recorded using VideoRecording example.
  
    Duration: 00:00:06.61, start: 0.000000, bitrate: N/A
  
      Stream #0.0: Video: flv, yuv420p, 288x288, 1k tbr, 1k tbn, 1k tbc
  
      Stream #0.1: Audio: nellymoser, 11025 Hz, mono, s16
  
  File 'complaint.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0x7fe579c32cc0] w:288 h:288 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
  
  [libx264 @ 0x7fe57a044600] using cpu capabilities: none!
  
  [libx264 @ 0x7fe57a044600] profile High, level 4.2
  
  [libx264 @ 0x7fe57a044600] 264 - core 118 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x33 me=umh subme=6 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=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=1.41 aq=1:1.00
  
  Output #0, mp4, to 'complaint.mp4':
  
    Metadata:
  
      duration        : 7
  
      creationdate    : Thu Jan 12 23:47:24
  
      description     : Recorded using VideoRecording example.
  
      encoder         : Lavf52.111.0
  
      Stream #0.0: Video: libx264, yuv420p, 288x288, q=0-69, 200 kb/s, 1k tbn, 1k tbc
  
      Stream #0.1: Audio: aac, 11025 Hz, mono, s16, 44 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
  Press [q] to stop, [?] for help
  
  frame= 6557 fps=106 q=-1.0 Lsize=     685kB time=00:00:03.62 bitrate=1549.1kbits/s dup=6367 drop=0    
  
  video:615kB audio:17kB global headers:0kB muxing overhead 8.361360%
  
  frame I:27    Avg QP:19.98  size:  8242
  
  [libx264 @ 0x7fe57a044600] frame P:6530  Avg QP:30.71  size:    62
  
  [libx264 @ 0x7fe57a044600] mb I  I16..4: 11.1% 79.3%  9.6%
  
  [libx264 @ 0x7fe57a044600] mb P  I16..4:  0.1%  0.2%  0.0%  P16..4:  1.2%  0.2%  0.3%  0.0%  0.0%    skip:98.0%
  
  [libx264 @ 0x7fe57a044600] 8x8 transform intra:77.8% inter:64.9%
  
  [libx264 @ 0x7fe57a044600] coded y,uvDC,uvAC intra: 75.3% 81.3% 33.3% inter: 0.5% 0.7% 0.1%
  
  [libx264 @ 0x7fe57a044600] i16 v,h,dc,p: 78%  9% 10%  3%
  
  [libx264 @ 0x7fe57a044600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 11% 32%  3%  4%  5%  2%  5%  4%
  
  [libx264 @ 0x7fe57a044600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 56%  7%  9%  3%  4%  7%  3%  7%  3%
  
  [libx264 @ 0x7fe57a044600] i8c dc,h,v,p: 45% 15% 34%  6%
  
  [libx264 @ 0x7fe57a044600] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fe57a044600] ref P L0: 80.5%  9.5% 10.0%
  
  [libx264 @ 0x7fe57a044600] kb/s:767.20