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• Obscure error while transcoding a video with FFMPEG

  8 juillet 2016, par ZiggidyCreative

  thanks for taking a moment to look at this FFMPEG error i’m having. I’m trying to transcode any video file, recorded in portrait mode and crop it to a square using the top portion and then size it down to 600x600 square. Here is the command i’m using :

  ffmpeg -y -i input-video.mov -filter_complex '[0] crop=1080:1080:0:0, scale=600:600, split=2[out1][out2]' -map '[out1]' video/transcoded-video.mp4 -map '[out2]' -qscale:v 6 thumbnails/thumb_%03d.png

  Here are the errors :

  [swscaler @ 0x2502260] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [swscaler @ 0x250a2b0] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [swscaler @ 0x2512300] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [NULL @ 0x24e9dd0] [Eval @ 0x7fff769243e0] Undefined constant or missing '(' in 'baseline'
  
  [NULL @ 0x24e9dd0] Unable to parse option value "baseline"
  
  [NULL @ 0x24e9dd0] Error setting option profile to value baseline.

  Here is the output :

  ffmpeg version git-2013-06-02-5711e4f Copyright (c) 2000-2013 the FFmpeg developers
  
   built on Jun  2 2013 07:38:40 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  
   configuration: --enable-shared --disable-asm --prefix=/app/vendor/ffmpeg
  
   libavutil      52. 34.100 / 52. 34.100
  
   libavcodec     55. 13.100 / 55. 13.100
  
   libavformat    55.  8.102 / 55.  8.102
  
   libavdevice    55.  2.100 / 55.  2.100
  
   libavfilter     3. 74.101 /  3. 74.101
  
   libswscale      2.  3.100 /  2.  3.100
  
   libswresample   0. 17.102 /  0. 17.102
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/app/downloads/bf951fbc8322d9010d679e656ccda330b6f19f36.mov':
  
   Metadata:
  
     major_brand     : qt  
  
     minor_version   : 0
  
     compatible_brands: qt  
  
     creation_time   : 2016-07-01 19:27:37
  
   Duration: 00:00:04.77, start: 0.000000, bitrate: 17881 kb/s
  
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17874 kb/s, 29.98 fps, 30 tbr, 600 tbn, 1200 tbc
  
     Metadata:
  
       rotate          : 90
  
       creation_time   : 2016-07-01 19:27:37
  
       handler_name    : Core Media Data Handler
  
  [swscaler @ 0x2502260] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [swscaler @ 0x250a2b0] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [swscaler @ 0x2512300] No accelerated colorspace conversion found from yuv420p to rgb24.
  
  [NULL @ 0x24e9dd0] [Eval @ 0x7fff769243e0] Undefined constant or missing '(' in 'baseline'
  
  [NULL @ 0x24e9dd0] Unable to parse option value "baseline"
  
  [NULL @ 0x24e9dd0] Error setting option profile to value baseline.
  
  Output #0, mp4, to '/app/outputs/2091/bf951fbc8322d9010d679e656ccda330b6f19f36.mp4':
  
   Metadata:
  
     major_brand     : qt  
  
     minor_version   : 0
  
     compatible_brands: qt  
  
     Stream #0:0: Video: mpeg4, yuv420p, 600x600, q=2-31, 200 kb/s, 90k tbn, 30 tbc
  
  Output #1, image2, to '/app/outputs/2091/thumbs/thumb_%03d.png':
  
   Metadata:
  
     major_brand     : qt  
  
     minor_version   : 0
  
     compatible_brands: qt  
  
     Stream #1:0: Video: png, rgb24, 600x600, q=2-31, 200 kb/s, 90k tbn, 30 tbc
  
  Stream mapping:
  
   Stream #0:0 (h264) -> crop
  
   split:output0 -> Stream #0:0 (mpeg4)
  
   split:output1 -> Stream #1:0 (png)

  Thanks again for looking at this and anything will help.

• ffmpeg not taking variables for file name in bash [duplicate]

  6 juillet 2016, par 2haloes

  This question already has an answer here :

  • Simple bash script ; what’s wrong with this syntax ?
    
    3 answers
    

  I have been trying to create a script to download files from a website using ffmpeg, it works well until it gets to the filename, the code is as so :

  echo "Hello, this is the basic script to download videos. This requires ffmpeg to be installed, do you want to start? (Y/N)"
  
  read start_input
  
  if [ $start_input = Y ] || [ $start_input = y ]
  
  then
  
      echo "[Text]"
  
      read video_link
  
      echo "Now I need what quality you want the video to be (240, 360, 480, 720, 1080, Default: 720)"
  
      read quality_link
  
      if [ -z $quality_link ]
  
      then 
  
          $quality_link = "720"
  
      fi 
  
  
  
      echo "Now name the new file (Note, it will have a .ts extention)"
  
  
  
      read $new_file
  
      echo "And where would you like it to be placed?"
  
      read $folder_location
  
      $file="${folder_location}/${new_file}.ts"
  
      ffmpeg -i "[url]" -c:v copy -c:a copy -f mpegts $file
  
  else 
  
      exit 0
  
  fi
  
  exit 0

  The problem is when the $file variable is used, ffmpeg doesn’t use it, variables are completely ignored, I have tried many different ways but they don’t work (Single quotes, double quotes, using $file), what can I do ?

• Downscale and padding with FFmpeg

  26 juin 2022, par nrofis

  I have an input video with a resolution of 3000x2160. I want to downscale it to 1920x1080 but keep the aspect ratio and center the original view by adding padding.

  


  I tried this command :

  


  ffmpeg -i input.mkv -c:v libx264 -vf scale=-1:1080,pad=1920:1080:'(ow-iw)/2':0 output.1080.mp4


  


  But I get an error :

  


  


  Padded dimensions cannot be smaller than input dimensions.

  


  


  Of course, since I want to add padding relatively to the output video size.

  


  How can I downscale and add padding to the output view ?