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• How can I convert a mp4 into an ogv with ffmpeg ? I am getting a "segmentation fault"

  8 mars 2020, par xrainbowuk

  I am trying to use ffmpeg to convert a mp4 video into an ogv and a webm. I am using a Mac and this is what I am putting into the terminal :

  ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora -codec:a libvorbis -f ogv output.ogv

  This is what I am getting in response :

      ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Hands-typing-(mobile-1080p-loop) copy.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2020-03-04T20:14:21.000000Z
  
    Duration: 00:00:21.18, start: 0.000000, bitrate: 8201 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 8085 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc (default)
  
      Metadata:
  
        creation_time   : 2020-03-04T20:14:21.000000Z
  
        handler_name    : ?Mainconcept Video Media Handler
  
        encoder         : AVC Coding
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        creation_time   : 2020-03-04T20:14:21.000000Z
  
        handler_name    : #Mainconcept MP4 Sound Media Handler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> theora (libtheora))
  
    Stream #0:1 -> #0:1 (aac (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  zsh: segmentation fault  ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora   -f

  I have also tried this, which doesn’t work :

  ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora -qscale:v 3 -codec:a libvorbis \
  
    -qscale:a 3 -f ogv output.ogv

  I am struggling to find the answer to my question. Especially as there are so many posts about "segmentation faults".

  Any help is very much appreciated.

• Passing arguments to Powershells Call Operatore - I can't get it to work

  2 janvier 2020, par morgola22

  For some reason I cannot get even the most simple Ffmpeg case to work :

  $pathToFfmpeg = "PathToFfmpeg\ffmpeg.exe"
  
  $video = "PathToVideoFile\video.mp4"
  
  $param = "--i $video", "output.avi"
  
  $execute = &$pathToFfmpeg $param

  This should result in the most basic Ffmpeg usage according to Ffmpeg website : ffmpeg -i input.mp4 output.avi.
  However all I receive is :

  ffmpeg.exe : ffmpeg version git-2020-01-01-7b58702 Copyright (c) 2000-2020 the FFmpeg developers
  
  At line:4 char:12
  
  + [string[]] $execute = &$pathToFfmpeg $param
  
  +                          ~~~~~~~~~~~~~~~~~~~~~
  
      + CategoryInfo          : NotSpecified: (ffmpeg version ...mpeg developers:String) [], RemoteException
  
      + FullyQualifiedErrorId : NativeCommandError
  
  
  
    built with gcc 9.2.1 (GCC) 20191125
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass 
  
  --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb 
  
  --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame 
  
  --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma 
  
  --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex 
  
  --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec 
  
  --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  
    libavutil      56. 38.100 / 56. 38.100
  
    libavcodec     58. 65.100 / 58. 65.100
  
    libavformat    58. 35.101 / 58. 35.101
  
    libavdevice    58.  9.102 / 58.  9.102
  
    libavfilter     7. 70.101 /  7. 70.101
  
    libswscale      5.  6.100 /  5.  6.100
  
    libswresample   3.  6.100 /  3.  6.100
  
    libpostproc    55.  6.100 / 55.  6.100
  
  Unrecognized option '-i PathToVideoFile\video.mp4'.
  
  Error splitting the argument list: Option not found

  So it seems I am doing something wrong. Anybody knows how I get this to work ? I have tried different methods to create the params array and checked with EchoArgs.exe, but no avail. I am out of ideas. It looks like Ffmpeg does not recognise what Powershell is passing to it.

• What is a correct way of ffmpeg dshow webcamera properties save and load ?

  12 juin 2020, par C0oo1D

  Command (PS == Windows PowerShell) :

  



  PS D:\> ffmpeg -f dshow -show_video_device_dialog True -video_device_save some_profile.txt -i 'video=MicrosoftR LifeCam Studio(TM)'


  



  FFmpeg Header :

  



  ffmpeg version git-2020-06-04-7f81785 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 49.100 / 56. 49.100
  libavcodec     58. 90.100 / 58. 90.100
  libavformat    58. 44.100 / 58. 44.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 84.100 /  7. 84.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100


  



  Error after OK/Cancel/Close in camera settings dialog (empty file was created). Also tried without dialog - the same problem :

  



  [dshow @ 0715de40] Query for IPersistStream failed.
video=Microsoft® LifeCam Studio(TM): I/O error


  



  I assume that problem at the camera side, but I don't exclude my blindness (didn’t find any examples of saving settings or required command options in the documentation).

  



  Perhaps there is another way to save / load webcamera properties ?