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• FFMPEG not recognising -crf or -qp

  23 avril 2021, par Benj

  I am trying to make a losslessly encoded mp4 video out of png images.

  


  I have a folder of images named frame-%d.png.

  


  ffmpeg -i frame-%d.png -framerate 30 -c:v libx264 -crf 0 output.mp4

  


  FFMPEG rejects crf and qp with the message :

  


  ffmpeg -i frame-%d.png -framerate 30 -c:v libx264 -crf 0 output.mp4
ffmpeg version N-97327-g05039c1334 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: 
  libavutil      56. 42.102 / 56. 42.102
  libavcodec     58. 78.102 / 58. 78.102
  libavformat    58. 42.100 / 58. 42.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 77.101 /  7. 77.101
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
Unrecognized option 'crf'.
Error splitting the argument list: Option not found


  


  Why is crf unavailable ?

  


• Remove error when running ffmpeg in Windows script

  3 septembre 2021, par K7AAY

  I use a script to downsize audiobook files.
  
The original audiobook file was concatenated from multiple MP3 files into one MP3 file.
  
The script (in Windows) relies on ffmpeg (version git-2020-06-26-7447045) and contains

  


  FOR %%A IN (dir *.mp3) DO ffmpeg -i "%%A" -c:a libmp3lame -q:a 8 "_%%A"

  


  However, this error message appears :

  


  


  deprecated pixel format used, make sure you did set range correctly
  
[mp3 @ 000001f026d56400] Frame rate very high for a muxer not efficiently supporting it.
  
Please consider specifying a lower framerate, a different muxer or -vsync 2

  


  


  How do I modify the script for greater efficiency and remove that error message ? TY.

  


• Is there any way to remove Protected metadata ?

  23 septembre 2020, par Nojus741

  I have an Audio file which plays fine in VLC player, but not in other players. I opened up properties of the file and it says Encryption : Encrypted, but there is no protection on this file as it plays in VLC player. Is there any way to remove this metadata ?

  


  File info :

  


  Format                                   : iso6
Codec ID                                 : iso6 (iso6/dash)
File size                                : 127 MiB
Duration                                 : 1 h 29 min
Overall bit rate                         : 199 kb/s

Audio
ID                                       : 1
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : enca-40-2
Duration                                 : 1 h 29 min
Bit rate                                 : 192 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 123 MiB (96%)
Language                                 : Lithuanian
Default                                  : Yes
Alternate group                          : 1
Encryption                               : Encrypted


  


  The error I get with ffmpeg :

  


  ffmpeg version git-2020-06-28-4cfcfb3 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 9.3.1 (GCC) 20200621
 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 --enable-libgsm --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. 55.100 / 56. 55.100
  libavcodec     58. 93.100 / 58. 93.100
  libavformat    58. 47.100 / 58. 47.100
  libavdevice    58. 11.100 / 58. 11.100
  libavfilter     7. 86.100 /  7. 86.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
**[mov,mp4,m4a,3gp,3g2,mj2 @ 0000021962e0c2c0] Incorrect number of samples in encryption info**
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Administrator\Desktop\track_2.mp4':
  Metadata:
    major_brand     : iso6
    minor_version   : 0
    compatible_brands: iso6dash
  Duration: 01:29:15.60, bitrate: 199 kb/s
    Stream #0:0(lit): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 191 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
At least one output file must be specified