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• ffmpeg Error : Pattern type 'glob' was selected but globbing is not support ed by this libavformat build

  20 juillet 2015, par Aryan Naim

  I’m trying to convert group of ".jpg" files acting as individual frames into 1 single mpeg video ".mp4"

  Example parameters i used :

  frame duration =2 secs

  frame rate =30 fps

  encoder = libx264 (mpeg)

  input pattern = "*.jpg"

  output pattern = video.mp4

  Based on ffmpeg wiki instructions at (https://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images), I issued this command :

  ffmpeg -framerate 1/2 -pattern_type glob -i "*.jpg" -c:v libx264 -r 30 -pix_fmt yuv420p video.mp4

  Im getting this error :

  [image2 @ 049ab120] Pattern type ’glob’ was selected but globbing is not support
  ed by this libavformat build
  *.jpg : Function not implemented

  Which probably means the API pattern matching commands for my build/version have changed. By the way this my windows 32bit ffmpeg download build # ffmpeg-20150702-git-03b2b40-win32-static.

  How can I choose a group of files using pattern matching using ffmpeg ?

  Thanks

• Can not build ffmpeg with gpu acceleration on macOS

  21 février 2018, par Kirill Serebriakov

  I’m trying to use my GPU for video encoding/decoding operations on macOS.

  • OS : MacOS 10.12.5 (Sierra) //hackintosh if it matters
  • CUDA Toolkit 8.0 installed
  • NVidia GTX 1080 with latest web driver

  Followed this guides :

  • https://trac.ffmpeg.org/wiki/CompilationGuide/MacOSX
  • https://developer.nvidia.com/ffmpeg

  Config :

  ./configure --enable-cuda --enable-cuvid --enable-nvenc \
  
  --enable-nonfree --enable-libnpp \
  
  --extra-cflags=-I/Developer/NVIDIA/CUDA-8.0/include \
  
  --extra-ldflags=-L/Developer/NVIDIA/CUDA-8.0/lib

  Got this error :

  ERROR: cuvid requested, but not all dependencies are satisfied: cuda

  config.log - full configure log

  I did not install Video Codec SDK (not sure how to make it on macOS, just thought that it may come with cuda toolkit) and according to this page I have a lot of limitations on OSX.

  Is it possible on macOS ? Or this will work only for linux/windows ?

• ffmpeg compile for visual studio 2012

  3 octobre 2020, par user2290878

  Was trying to compile ffmpeg using vs2012 , its saying unsupported ms version used 2013 or above .

  


  also tried compiling with mingw , got the shared libraries , but unable to link with vs 2012 project giving unresolved symbols error .

  


  error LNK2019 : unresolved external symbol _avcodec_get_class referenced in function _wmain
 : error LNK2019 : unresolved external symbol _avcodec_find_encoder_by_name referenced in function _wmain

  


  not sure how to proceed . could nay help on this pls .

  


  tried the way specified in the link https://trac.ffmpeg.org/wiki/CompilationGuide/MSVC but could not make it .