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• error = "sh : /root/bin/ffmpeg : Permission denied

  6 août 2015, par user1503606

  Ffmpeg install location.

  Hi All i am running Centos 6.6 and i installed ffmpeg using this guide following each step.

  http://trac.ffmpeg.org/wiki/CompilationGuide/Centos

  But when i try and run.

  $output = shell_exec("cd {$targetDir} && /root/bin/ffmpeg -i {$fileName} {$wav} 2>&1");

  I get

  sh : /root/bin/ffmpeg : Permission denied

  After reading through lots of post i believe i should not have installed ffmpeg in /root/bin/

  How do i install it in say /usr/local/bin ?

  I ran this.

  PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure
  —prefix="$HOME/ffmpeg_build" —extra-cflags="-I$HOME/ffmpeg_build/include" —extra-ldflags="-L$HOME/ffmpeg_build/lib" —bindir="$HOME/bin" —pkg-config-flags="—static" —enable-gpl —enable-nonfree —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265

  Can someone let me know who i would do this thanks.

• C api on capturing video stream from webcam using ffmpeg

  14 juillet 2013, par Tanjim Hossain Sifat

  I am a new user of ffmpeg. Ffmpeg has a good documentation on using it in command-line, but i am looking for some C API code.

  I want to make a software using C, that would capture video stream from webcam and give me the video stream in raw format, that I would encode in a codec later.

  I have visited this given link, but it provided only the command-line use, not the use of libraries provided by ffmpeg :
  http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20capture%20a%20webcam%20input

  I also visited this link, which gave me good idea on using the libavcodec, but no other tutorial is available :
  ffmpeg C API documentation/tutorial

  Please someone help me finding C api on video stream capturing from webcam using ffmpeg's library. Thanks in advance.

• Bash script to convert music from one directory into another

  26 octobre 2014, par SinTrans

  I’ve modified this script from the arch forums : https://wiki.archlinux.org/index.php/Convert_Flac_to_Mp3#With_FFmpeg

  I’m trying to find specific file types in a directory structure, convert them to another music file type, and place them in a "converted" directory that maintains the same directory structure.

  I’m stuck at stripping the string $b of its file name.

  $b holds the string ./converted/alt-j/2012\ an\ awesome\ wave/01\ Intro.flac

  Is there a way I can remove the file name from the string ? I don’t think ffmpeg can create/force parent directories of output files.

  #!/bin/bash
  
  # file convert script
  
  find -type f -name "*.flac" -print0 | while read -d $'\0' a; do
  
      b=${a/.\//.\/converted/}
  
      < /dev/null ffmpeg -i "$a" "${b[@]/%flac/ogg}"
  
      #echo "${b[@]/%flac/ogg}"