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• FFmpeg/FFplay directshow and blackmagic

  21 janvier 2016, par max246

  I got a BlackMagic intensity pro 4k capturing card, which is working fine with the express tool, I can see the live feed and record, but after I tried different stuff from what I found online to make ffplay/ffmpeg working, I ended up to have just a black screen.

  I have checked if all the versions of my ffmpeg files were eanable-decklinnk, I have compiled the latest one with the latest version of the api, but still I get a black screen instead of the actually feed.

  ffmpeg -list_devices true -f dshow -i dummy
  
  ffmpeg version N-77245-g7209c94 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (Rev4, Built by MSYS2 project)
  
    configuration:  --enable-avisynth --enable-libbluray --enable-libcaca --enable -libass --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
  
   --enable-libschroedinger --enable-libsoxr --enable-libtwolame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libtesseract --
  
  enable-libdcadec --enable-libbs2b --enable-libmfx --enable-libfreetype --enable-fontconfig --enable-libfribidi --enable-opengl --enable-libvpx --enable-libkvaza
  
  ar --enable-libwebp --enable-decklink --enable-libgme --disable-w32threads --enable-opencl --enable-libzimg --enable-openssl --disable-debug
  
    libavutil      55. 10.100 / 55. 10.100
  
    libavcodec     57. 17.100 / 57. 17.100
  
    libavformat    57. 20.100 / 57. 20.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 21.100 /  6. 21.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
  [dshow @ 0000000ba36b6480] DirectShow video devices (some may be both video and audio devices)
  
  [dshow @ 0000000ba36b6480]  "Blackmagic WDM Capture"
  
  [dshow @ 0000000ba36b6480]     Alternative name "@device_pnp_\\?\decklink#avstream#5&2550cef9&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\decklinkcapture1"
  
  [dshow @ 0000000ba36b6480]  "Decklink Video Capture"
  
  [dshow @ 0000000ba36b6480]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\{44A8B5C7-13B6-4211-BD40-35B629D9E6DF}"
  
  [dshow @ 0000000ba36b6480] DirectShow audio devices
  
  [dshow @ 0000000ba36b6480]  "Wej?øcie liniowe (Blackmagic Audio)"
  
  [dshow @ 0000000ba36b6480]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{977E2DB6-B17C-4343-9018-652924C20A8C}"
  
  [dshow @ 0000000ba36b6480]  "Decklink Audio Capture"
  
  [dshow @ 0000000ba36b6480]     Alternative name "@device_sw_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\{AAA22F7E-5AA0-49D9-8C8D-B52B1AA92EB7}"
  
  dummy: Immediate exit requested

  The result above tells me that ffmpeg can see the card and I am able to open a communication, I have checked one post where it says you need to specific which input type is showing, otherwise it will never work, and I did that, but still no luck.

  By running the command line above, I can only see a black screen but not actually errors.

  I am running Windows 8.1 64bit.

  ffplay  -pixel_format uyvy422 -framerate 25 -f dshow -i video="Decklink Video Capture"  -format x264
  
  ffplay version N-77245-g7209c94 Copyright (c) 2003-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (Rev4, Built by MSYS2 project)
  
    configuration:  --enable-avisynth --enable-libbluray --enable-libcaca --enable-libass --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
  
   --enable-libschroedinger --enable-libsoxr --enable-libtwolame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libtesseract --
  
  enable-libdcadec --enable-libbs2b --enable-libmfx --enable-libfreetype --enable-fontconfig --enable-libfribidi --enable-opengl --enable-libvpx --enable-libkvaza
  
  ar --enable-libwebp --enable-decklink --enable-libgme --disable-w32threads --enable-opencl --enable-libzimg --enable-openssl --disable-debug
  
    libavutil      55. 10.100 / 55. 10.100
  
    libavcodec     57. 17.100 / 57. 17.100
  
    libavformat    57. 20.100 / 57. 20.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 21.100 /  6. 21.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
  Input #0, dshow, from 'video=Decklink Video Capture':    0B f=0/0
  
    Duration: N/A, start: 0.138773, bitrate: N/A
  
      Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576, 25 tbr,
  
  10000k tbn, 25 tbc
  
     1.51 M-V: -0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

• ffmpeg exited with code 1 : Error configuring complex filters

  21 décembre 2015, par rycornell

  I am using the fluent-ffmpeg node package to merge videos. I am following the documentation exactly but I get the following error : Error: ffmpeg exited with code 1: Error configuring complex filters. Here is the code :

  ffmpeg('/videos/test/part1.mov')
  
    .input('/videos/test/part2.mov')
  
    .on('error', function(err) {
  
      console.log('An error occurred: ' + err.message);
  
    })
  
    .on('end', function() {
  
      console.log('Merging finished !');
  
    })
  
    .mergeToFile('videos/test/final.mp4', 'videos/test/tempDir');

  and here is the error output (I logged the command generated by fluent-ffmpeg to the console) :

  C:\Program Files\ffmpeg\bin\ffmpeg.exe [ '-formats' ] { captureStdout: true }
  
  C:\Program Files\ffmpeg\bin\ffmpeg.exe [ '-encoders' ] { captureStdout: true }
  
  C:\Program Files\ffmpeg\bin\ffmpeg.exe [ '-i',
  
    '/videos/test/part1.mov',
  
    '-i','/videos/test/part2.mov',
  
    '-y',
  
    '-filter_complex',
  
    'concat=n=2:v=1:a=1',
  
    'videos/test/final.mp4' ] { niceness: 0 }
  
  An error occurred: Error: ffmpeg exited with code 1: Error configuring complex filters.
  
  Invalid argument
  
  
  
  at ChildProcess.<anonymous> (C:\test\node_modules\fluent-ffmpeg\lib\processor.js:169:22)
  
  at ChildProcess.emit (events.js:98:17)
  
  at Process.ChildProcess._handle.onexit (child_process.js:809:12)
  
  </anonymous>

  I’m able to run ffmpeg on my machine for other tasks and it works fine. I’m not sure what the ’-filter_complex’ flag is supposed to do. I am using fluent-ffmpeg version 2.0.1 and ffmpeg windows static build git-9d1fb9e (2015-12-17).

• How to overlay swf files on a video

  17 décembre 2015, par Harsha Vardhan

  Hi recently I started working with ffmpeg, there I overlay-ed images as well as gif files on videos. Where coming to swf files ffmpeg is unable to recognize that format.

  I tried below command for overlaying :

  ffmpeg -i vid.mp4 -i swf.swf -filter_co
  
  mplex overlay=x=100:y=100:shortest=1  -q 15 -vcodec libx264 out.mp4
  
  ffmpeg version N-76822-g12a419d Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.2.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
   --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --
  
  enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55.  9.100 / 55.  9.100
  
    libavcodec     57. 16.100 / 57. 16.100
  
    libavformat    57. 19.100 / 57. 19.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 15.100 /  6. 15.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 1
  
      compatible_brands: mp42avc1
  
      creation_time   : 2009-03-02 14:42:39
  
    Duration: 00:00:10.56, start: 0.000000, bitrate: 663 kb/s
  
      Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt
  
  p, 125 kb/s (default)
  
      Metadata:
  
        creation_time   : 2009-03-02 14:42:39
  
        handler_name    : Apple Sound Media Handler
  
      Stream #0:1(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu
  
  v420p(tv, smpte170m/smpte170m/bt709), 480x360, 196 kb/s, 24 fps, 24 tbr, 600 tbn
  
  , 1200 tbc (default)
  
      Metadata:
  
        creation_time   : 2009-03-02 14:42:40
  
        handler_name    : Apple Video Media Handler
  
      Stream #0:2(eng): Data: none (rtp  / 0x20707472), 202 kb/s
  
      Metadata:
  
        creation_time   : 2009-03-02 14:42:40
  
        handler_name    : hint media handler
  
      Stream #0:3(eng): Data: none (rtp  / 0x20707472), 129 kb/s
  
      Metadata:
  
        creation_time   : 2009-03-02 14:42:40
  
        handler_name    : hint media handler
  
  [swf @ 00000098cdb9e000] Could not find codec parameters for stream 0 (Audio: pc
  
  m_u8, 5512 Hz, mono, 44 kb/s): unspecified sample format
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #1, swf, from 'swf.swf':
  
    Duration: 00:00:04.90, bitrate: 196 kb/s
  
      Stream #1:0: Audio: pcm_u8, 5512 Hz, mono, 44 kb/s
  
      Stream #1:1: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:2: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:3: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:4: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:5: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:6: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
      Stream #1:7: Audio: mp3, 11025 Hz, mono, s16p, 16 kb/s
  
  Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_overlay
  
  _0

  Any one please suggest me, how to resolve this issue or even getting frames from swf format files by using ffmpeg or any other similar tools.