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• swscaler warning : deprecated pixel format used

  18 juin 2016, par Martin Delille

  I want to perform a color space conversion of my video frame before converting it to an opengl texture with the following code :

  struct SwsContext * pSwsCtx = sws_getCachedContext(NULL,width, height, codec->pix_fmt, width, height, AV_PIX_FMT_RGBA, SWS_POINT, NULL, NULL, NULL);

  Each time the sws_getCachedContext() function is called I got the following warning :

  [swscaler @ 0x10506fa00] deprecated pixel format used, make sure you did set range correctly

  Here is my ffmpeg output for version information :

  ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Mar 26 2014 15:29:01 with Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libavresample   1.  2.  0 /  1.  2.  0
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder

  Any idea to disable this warning ? How to set the color range correctly ?

• ffmpeg generates file with only audio from ts

  8 novembre 2016, par Seoman

  I’m trying to get some parts of a ts video and then merge them into a new video. The problem is that when doing the split, the video is lost. The splits only contains audio. Here is the video source information :

  ffmpeg -i source_file.ts

  ffmpeg version 3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
  built with Apple LLVM version 7.3.0 (clang-703.0.29)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.0.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-vda
  
  libavutil      55. 17.103 / 55. 17.103
  
  libavcodec     57. 24.102 / 57. 24.102
  
  libavformat    57. 25.100 / 57. 25.100
  
  libavdevice    57.  0.101 / 57.  0.101
  
  libavfilter     6. 31.100 /  6. 31.100
  
  libavresample   3.  0.  0 /  3.  0.  0
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mpegts, from '97274181.ts':
  
  Duration: 00:02:30.70, start: 60.000000, bitrate: 3582 kb/s
  
  Program 1 
  
  Stream #0:0[0x100]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 139 kb/s
  
  Stream #0:1[0x101]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, unknown/bt709/unknown), 1920x1080, 60 fps, 60 tbr, 90k tbn, 2k tbc
  
  Stream #0:2[0x102]: Data: timed_id3 (ID3  / 0x20334449)
  
  At least one output file must be specified

  This is the command used for doing the split :

  ffmpeg -ss 10 -i source_file.ts -t 5 -c copy cut1.ts

  And this is the video information after the cut :

  ffmpeg version 3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
  built with Apple LLVM version 7.3.0 (clang-703.0.29)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.0.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-vda
  
  libavutil      55. 17.103 / 55. 17.103
  
  libavcodec     57. 24.102 / 57. 24.102
  
  libavformat    57. 25.100 / 57. 25.100
  
  libavdevice    57.  0.101 / 57.  0.101
  
  libavfilter     6. 31.100 /  6. 31.100
  
  libavresample   3.  0.  0 /  3.  0.  0
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  libpostproc    54.  0.100 / 54.  0.100
  
  [NULL @ 0x7fc9ba008000] start time for stream 0 is not set in estimate_timings_from_pts
  
  [mpegts @ 0x7fc9b9800000] Could not find codec parameters for stream 0 (Video: h264 ([27][0][0][0] / 0x001B), none): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  Input #0, mpegts, from 'siri1.ts':
  
  Duration: 00:00:05.08, start: 1.400000, bitrate: 148 kb/s
  
  Program 1 
  
  Metadata:
  
    service_name    : Service01
  
    service_provider: FFmpeg
  
  Stream #0:0[0x100]: Video: h264 ([27][0][0][0] / 0x001B), none, 90k tbr, 90k tbn, 180k tbc
  
  Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 120 kb/s
  
  At least one output file must be specified

  If I reproduce cut1.ts I can only hear the audio. Video is gone.

• FFmpeg batch convert multiple files

  11 mars 2019, par John

  This command works great :

  ffmpeg \
  
  -i /mnt/share/Movies2/"nameofmovie.mkv" \
  
  -map 0:0 \
  
  -map 0:1 \
  
  -map 0:2 \
  
  -c:v libx264 \
  
  -preset veryfast \
  
  -tune film \
  
  -crf 18 \
  
  -c:a:0 copy \
  
  -c:a:1 copy \
  
  /mnt/share/Converted/"nameofmovie".mkv

  But i want to either be able to read the input file from a text file or to run this command one after another for each file i want to convert. Is there a script i can set up to do this ? Not all the files are in the same folder or the same format so something where i could just change the file name and format would be great. I used to have a bash script that could do this for an entire folder but that’s not what i am trying to do here. I am using Ubuntu server 18.04
  Also i’m pretty new to this i’ve found this for a whole folder :

  for i in *.avi;
  
  do name=`echo $i | cut -d'.' -f1`;
  
  echo $name;
  
  ffmpeg -i "$i" "${name}.mov";
  
  done

  But i dont know how to adapt this for individual files