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• ffmpeg : get duration using a script : Unable to find a suitable output format for '2>&1 | grep "Duration"' [duplicate]

  6 novembre 2017, par A_Matar

  This question already has an answer here :

  • Python subprocess command with pipe
    
    7 answers
    

  I am trying to get the duration of a media file I have by running these lines from a python script :

  test_file = 'path_to_file.mp4'
  
  ffmpeg_get_mediafile_length = ["ffmpeg", "-i", test_file, '2>&1 | grep "Duration"']
  
  output = subprocess.Popen(ffmpeg_get_mediafile_length,
  
                          stdout = subprocess.PIPE
  
                          ).stdout.read()
  
  print output # this gives None
  
  matches = re_length.search(output)
  
  print matches

  Here is the ffmpeg logs I get alongside with the error I get :

  ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with Apple LLVM version 9.0.0 (clang-900.0.37)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'path_to_media_file':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.83.100
  
    Duration: 00:22:25.89, start: 0.000000, bitrate: 6059 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 6057 kb/s, 15 fps, 30 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  [NULL @ 0x7fedac802200] Unable to find a suitable output format for '2>&1 | grep "Duration"'
  
  2>&1 | grep "Duration": Invalid argument

• FFmpeg error with multiple outputs

  9 novembre 2017, par lys

  I’m trying to make a stream using a webcam as data input with FFmpeg, but I need to stream a video in addition to the stream. Both features with the same command for a few minutes.

  (If placed separately the recording code works perfectly)

  FFmpeg code :

  ffmpeg -f dshow -i video="Integrated Webcam" -t 300 -c:v libx264 -segment_atclocktime 1 -segment_format mp4 '/meu_video.mp4' | -s 640x360 -ac 2 -f flv -vcodec libx264 -profile:v baseline -maxrate 600000 -bufsize 600000 -r 25 -ar 44100 -c:a libfaac -b:a 128k "http://localhost:3030"

  There are two errors, one when I try to join the two codes using | or \ and the other when I put only the stream code to test.

  Log multiple outputs :

      ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
  
  
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --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-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --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-zlib
  
  
  
  libavutil      55. 58.100 / 55. 58.100
  
    libavcodec     57. 89.100 / 57. 89.100
  
    libavformat    57. 71.100 / 57. 71.100
  
    libavdevice    57.  6.100 / 57.  6.100
  
  libavfilter     6. 82.100 /  6. 82.100
  
    libswscale      4.  6.100 /  4.  6.100
  
    libswresample   2.  7.100 /  2.  7.100
  
    libpostproc    54.  5.100 / 54.  5.100
  
  
  
  Input #0, dshow, from 'video=Integrated Webcam':
  
    Duration: N/A, start: 
  
  264374.193000, bitrate: N/A
  
      Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 30 fps, 30 tbr, 10000k tbn, 10000k tbc
  
  
  
  http://localhost:3030/: Unknown error

  Edit 3 : I ran the command using -report and generated the report, but it’s too big to paste into the question.

  https://www.dropbox.com/s/2xsuzq5fx464o4w/ffmpeg-20171109-145406.log?dl=0

• Ffmpeg Video Transcode Faliure [swscaler @ 000000000168ee60] [duplicate]

  9 novembre 2017, par Naveen Ramakrishnan

  This question already has an answer here :

  • FFMPEG (libx264) “height not divisible by 2”
    
    4 answers
    

  We are using FFMpeg version N-85653-gb4330a0 and during Video transcode received below error message. Can you suggest how to fix this issues ?

  C :\Users\svc_daltranscode>ffmpeg -version
  ffmpeg version N-85653-gb4330a0 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.3.0 (GCC)
  configuration : —enable-gpl —enable-version3 —enable-cuda —enable-cuvid —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-nvenc —enable-avi
  synth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libbs2b —enable-l
  ibcaca —enable-libfreetype —enable-libgme —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enab
  le-libopencore-amrwb —enable-libopenh264 —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libsnappy —enable-libsoxr —enable-libspeex
  —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-li
  bwebp —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-libzimg —enable-lzma —enable-zlib

  libavutil 55. 61.100 / 55. 61.100

  libavcodec 57. 93.100 / 57. 93.100

  libavformat 57. 72.101 / 57. 72.101

  libavdevice 57. 7.100 / 57. 7.100

  libavfilter 6. 87.100 / 6. 87.100

  libswscale 4. 7.101 / 4. 7.101

  libswresample 2. 8.100 / 2. 8.100

  libpostproc 54. 6.100 / 54. 6.100

  ---

  2017-11-09 14:52:24,234 | INFO | session= | user= | com.artesia.common.lang.ProcessUtils | Process completed with exit value 1

  2017-11-09 14:52:24,234 | WARN | session= | user= | com.artesia.server.video.transcode.FFMpegAsyncTranscoder | Running FFMPEG process exited with code:1

  2017-11-09 14:52:24,234 | ERROR | session= | user= | com.artesia.server.video.transcode.FFMpegAsyncTranscoder | FFMPEG failed with error :
  [swscaler @ 000000000168ee60] deprecated pixel format used, make sure you did set range correctly
  [libx264 @ 0000000000bc1420] height not divisible by 2 (640x749)
  Error initializing output stream 1:0 — Error while opening encoder for output stream #1:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  2017-11-09 14:52:24,234 | INFO | session= | user= | com.artesia.server.video.transcode.FFMpegAsyncTranscoder | Sending transcode error notfication event for the transcode job:PIz1510257135161fa4afaa6-f629-4816-957c-065b7773a9b7

  2017-11-09 14:52:24,312 | INFO | session= | user= | com.artesia.server.video.transcode.FFMpegAsyncTranscoder | Sending transcode complete notification for the job:PIz1510257135161fa4afaa6-f629-4816-957c-065b7773a9b7

  Thanks,
  Naveen