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Sur d’autres sites (6515)

  • Use opencv to encode into flv, playable by flash player

    13 février 2012, par Hemang Shah

    I've compiled ffmpeg with libx264 using configure options given at 1.

    This results in the following codecs being available in ffmpeg :

    $ ffmpeg -codecs | grep "264\|flv"
    
ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers
    
built on Feb 10 2012 13:54:15 with gcc 4.6.1
    
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab
    
libavutil      51. 34.101 / 51. 34.101
    
libavcodec     53. 60.100 / 53. 60.100
    
libavformat    53. 31.100 / 53. 31.100
    
libavdevice    53.  4.100 / 53.  4.100
    
libavfilter     2. 60.100 /  2. 60.100
    
libswscale      2.  1.100 /  2.  1.100
    
libswresample   0.  6.100 /  0.  6.100
    
libpostproc    52.  0.100 / 52.  0.100
    
DEVSD  flv             Flash Video (FLV) / Sorenson Spark / Sorenson H.263
    
D V D  h264            H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
D V D  h264_vdpau      H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)
    
EV    libx264         libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
EV    libx264rgb      libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB

    After this, I compiled opencv. Here is partial cmake result :

    --   Video I/O:
    
--     DC1394 1.x:                 NO
    
--     DC1394 2.x:                 NO
    
--     FFMPEG:                     YES
    
--       codec:                    YES
    
--       format:                   YES
    
--       util:                     YES
    
--       swscale:                  YES
    
--       gentoo-style:             YES
    
--     GStreamer:                  YES
    
--     UniCap:                     NO
    
--     PvAPI:                      NO
    
--     V4L/V4L2:                   /1
    
--     Xine:                       NO

    Now, using opencv's VideoWriter, I tried to encode into flv with the following FOURCC codes :
    FLV1, X264

    While the FLV1 results in a video file not playable by flash player, but playabe by vlc ; X264 produces no results at all.
    Here is the console output for X264, resulting in a 0 byte file.

    Output #0, flv, to 'd.flv' :
    Stream #0.0 : Video : [0][0][0][0] / 0x0000, yuv420p, 320x240, q=2-31, 4915 kb/s, 90k tbn, 24 tbc

    Do you see anything amiss or incorrect ?
    thanks,

  • Run ffmpeg without outputting configuration information ?

    28 mars 2014, par Matt Joiner

    I'm invoking ffmpeg with subprocess.Popen, and trying to capture the stderr output and write it to logging.

    args = ['ffmpeg', '-i', path]
    
if start:
    
    args += ['-ss', start]
    
if end:
    
    args += ['-t', end]
    
args += [
    
    '-vcodec', 'copy',
    
    '-acodec', 'copy',
    
    '-scodec', 'copy',
    
    '-f', 'mpegts',
    
    '-y', '/dev/stdout']
    
self.child = subprocess.Popen(
    
    args,
    
    stdin=open(os.devnull, 'rb'),
    
    stdout=subprocess.PIPE,
    
    stderr=subprocess.PIPE)

    ffmpeg generates a lot of configuration information like the following :

    FFmpeg version 0.6.2-4:0.6.2-1ubuntu1,
    Copyright (c) 2000-2010 the Libav
    developers built on Mar 22 2011
    15:55:04 with gcc 4.5.2
    configuration :
    —extra-version=4:0.6.2-1ubuntu1 —prefix=/usr —enable-avfilter —enable-avfilter-lavf —enable-vdpau —enable-bzlib —enable-libgsm —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-libvorbis —enable-pthreads —enable-zlib —enable-libvpx —disable-stripping —enable-runtime-cpudetect —enable-vaapi —enable-gpl —enable-postproc —enable-swscale —enable-x11grab —enable-libdc1394 —enable-shared —disable-static WARNING : library configuration
    mismatch libavutil configuration :
    —extra-version=4:0.6.2-1ubuntu2 —prefix=/usr —enable-avfilter —enable-avfilter-lavf —enable-vdpau —enable-bzlib —enable-libdirac —enable-libgsm —enable-libopenjpeg —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-libvorbis —enable-pthreads —enable-zlib —enable-libvpx —disable-stripping —enable-runtime-cpudetect —enable-vaapi —enable-libopenjpeg —enable-gpl —enable-postproc —enable-swscale —enable-x11grab —enable-libfaad —enable-libdirac —enable-libfaad —enable-libmp3lame —enable-librtmp —enable-libx264 —enable-libxvid —enable-libdc1394 —enable-shared —disable-static libavcodec configuration :
    —extra-version=4:0.6.2-1ubuntu2 —prefix=/usr —enable-avfilter —enable-avfilter-lavf —enable-vdpau —enable-bzlib —enable-libdirac —enable-libgsm —enable-libopenjpeg —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-libvorbis —enable-pthreads —enable-zlib —enable-libvpx —disable-stripping —enable-runtime-cpudetect —enable-vaapi —enable-libopenjpeg —enable-gpl —enable-postproc —enable-swscale —enable-x11grab —enable-libfaad —enable-libdirac —enable-libfaad —enable-libmp3lame —enable-librtmp —enable-libx264 —enable-libxvid —enable-libdc1394 —enable-shared —disable-static libavutil 50.15. 1 / 50.15. 1
    libavcodec 52.72. 2 / 52.72. 2
    libavformat 52.64. 2 / 52.64. 2
    libavdevice 52. 2. 0 / 52. 2. 0
    libavfilter 1.19. 0 / 1.19. 0
    libswscale 0.11. 0 / 0.11. 0
    libpostproc 51. 2. 0 / 51. 2. 0

    Prior to finally outputting the stuff I'd like to log :

    Seems stream 0 codec frame rate
    differs from container frame rate :
    47.95 (66893/1395) -> 23.98 (66893/2790) At least one output file
    must be specified

    Is there an option to prevent this excessive output ? Should I be doing it differently ?

  • AFTER PHP-FFMpeg not converting (error with ffmpeg)

    15 août 2016, par Magurean Dan Sergiu

    I have installed ffmpeg server side with all the dependencies, updated it. And then installed PHP-FFMpeg with Composer. Tested that ffmpeg is instaled with a ssh conexion.

    root@host [/opt/ffmpeg]# ffmpeg
    
ffmpeg version N-81322-ge8b355a Copyright (c) 2000-2016 the FFmpeg developers
    
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
    
configuration: --disable-yasm
    
libavutil      55. 28.100 / 55. 28.100
    
libavcodec     57. 51.100 / 57. 51.100
    
libavformat    57. 46.100 / 57. 46.100
    
libavdevice    57.  0.102 / 57.  0.102
    
libavfilter     6. 51.100 /  6. 51.100
    
libswscale      4.  1.100 /  4.  1.100
    
libswresample   2.  1.100 /  2.  1.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options]     outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'

    But when I try to convert a video file with a php script it throws me a very long error.
    PHP Code :

    <?PHP
    
include($_SERVER['DOCUMENT_ROOT']."/vendors/install/vendor/autoload.php");
    
$ffmpeg = FFMpeg\FFMpeg::create();
    
$video = $ffmpeg->open($_SERVER['DOCUMENT_ROOT'].'/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.wmv');
    
$video
    
       ->filters()
    
       ->synchronize();
    
$format = new FFMpeg\Format\Video\X264();
    
$format->on('progress', function ($video, $format, $percentage) {
    
    echo "$percentage % transcoded";});
    
$video
    
      ->save($format,$_SERVER['DOCUMENT_ROOT'].'/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.mp4');
    
?>

    Error displayed :

    <b>Fatal error</b>:  Uncaught exception 'Alchemy\BinaryDriver\Exception\ExecutionFailureException' with message 'ffmpeg failed to execute command '/usr/local/bin/ffmpeg' '-y' '-i' '/home/user/working/resources/uploads/23097/2efeb41a1a7085a1dbd469c4895ac23e.wmv' '-async' '1' '-metadata:s:v:0' 'start_time=0' '-threads' '12' '-vcodec' 'libx264' '-acodec' 'libfaac' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes57ad320a1b685j794u/pass-57ad320a1b716' '/home/user/working/resources/uploads/23097/2efeb41a1a7085a1dbd469c4895ac23e.mp4'' in /home/user/working/vendors/install/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:100↵Stack trace:↵#0 /home/user/working/vendors/install/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php(72): Alchemy\BinaryDriver\ProcessRunner-&amp;gt;doExecutionFailure(''/usr/bin/ffmpe...')↵#1 / in <b>/home/user/working/vendors/install/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/Video.php</b> on line <b>168</b><br />↵"

    Then I have took the basic code displayed upwards and ran it directly through ssh.

    '/usr/local/bin/ffmpeg' '-y' '-i' '/home/user/working/resources/uploads/23097/2efeb41a1a7085a1dbd469c4895ac23e.wmv' '-async' '1' '-metadata:s:v:0' 'start_time=0' '-threads' '12' '-vcodec' 'libx264' '-acodec' 'libfaac' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes57ad320a1b685j794u/pass-57ad320a1b716' '/home/user/working/resources/uploads/23097/2efeb41a1a7085a1dbd469c4895ac23e.mp4'

    And this is the response I get :

    ffmpeg version N-81322-ge8b355a Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
    
  configuration: --disable-yasm
    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 51.100 / 57. 51.100
    
  libavformat    57. 46.100 / 57. 46.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 51.100 /  6. 51.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
Guessed Channel Layout for Input Stream #0.0 : stereo
    
Input #0, asf, from '/home/user/working/resources/uploads/23097/2efeb41a1a7085a1dbd469c4895ac23e.wmv':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
  Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
    
    Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 2 channels, fltp, 192 kb/s
    
    Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc
    
Unknown encoder 'libx264'

    My question is what to do next ? I have wasted 3 days to make this work and this is the furthest I have come. How can I test if libx264 is installed corectly ? And if it is not installed corectly how cand I reinstal or make it work ?

    After a few modifications

    I have used an already installed ffmpeg, and removed a few commands (that were by default the same) and this time I used only the command line.

    The request

    '/home/user/working/vendors/install/ffmpeg-git-20160813-64bit-static/ffmpeg' '-y' '-i' '/home/user/working/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.wmv' '-async' '1' '-metadata:s:v:0' 'start_time=0' '-vcodec' 'libx264' '-c:a' 'aac' '-b:v' '1000k' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes57b053ce14a12ljm8a/pass-57b053ce14ad3' '/home/user/working/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.mp4'

    The new result :

    ffmpeg version N-81328-gceab04f-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.1 (Debian 5.4.1-1) 20160803
    
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --enable-frei0r --enable-libfribidi --disable-indev=sndio --disable-outdev=sndio --enable-librtmp --enable-libmfx --enable-libzimg --cc=gcc-5
    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 51.102 / 57. 51.102
    
  libavformat    57. 46.101 / 57. 46.101
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 51.100 /  6. 51.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
Guessed Channel Layout for Input Stream #0.0 : stereo
    
Input #0, asf, from '/home/user/working/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.wmv':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
  Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
    
    Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 2 channels, fltp, 192 kb/s
    
    Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc
    
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.100000:first_pts=0.
    
[libx264 @ 0x442f5c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x442f5c0] ratecontrol_init: can't open stats file
    
Output #0, mp4, to '/home/user/working/resources/uploads/96048/ffd3c5e349fa5745159deef163b5c253.mp4':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
    Stream #0:0(eng): Unknown: none
    
    Metadata:
    
      start_time      : 0
    
      encoder         : Lavc57.51.102 libx264
    
    Stream #0:1(eng): Unknown: none
    
    Metadata:
    
      encoder         : Lavc57.51.102 aac
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (vc1 (native) -> h264 (libx264))
    
  Stream #0:0 -> #0:1 (wmav2 (native) -> aac (native))
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

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