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• ffmpeg windows, multiple displays

  2 septembre 2013, par user2739557

  I have a windows 7 setup with extended desktops (ie say two). I would like to capture
  everything on desktop 1 in a separate file and everying on desktop 2 in a separate file.
  At present I use

  ffmpeg -f dshow -r 30 video="UScreenCapture":audio="Microphone Array (IDT High Defi" test.flv

  which captures everything on both desktops simultaneously. Are there any options one can pass to limit this to say one Desktop ?

  Now solved as follows : use the crop video filter to extract the desktops 1 and 2. Assuming the two displays are 1024x768 then the following seems to work and create two files
  for the left and right displays

  ffmpeg -f dshow -r 30 video="UScreenCapture":audio="Microphone Array (IDT High Defi" -vf crop=1024x768:0:0 left.flv -f dshow -r 30 video="UScreenCapture":audio="Microphone Array (IDT High Defi" -vf crop=1024x768:1024:0 right.flv

• How to pipe multiple files to ffmpeg ?

  14 août 2013, par Olung

  I am trying to make a bash script that searches all subfolders on given path for .mov files and converts them with ffmpeg and outputs them in an destination folder, keeping the clip name.

  I'm very new to scripting and I'm having a hard time finding out how to solve this.

  So far I've tried using ls and find to output the filepaths, but have no idea how to pipe this to ffmpeg in the right way.

  Any clues ?

  Edit :

  got some sucess with this :

  #!/bin/bash
  
  
  
  echo "drop source folder: "
  
  read source
  
  
  
  echo "drop destination folder: "
  
  read des
  
  
  
  find "$source" -name '*.mov' -exec sh -c 'ffmpeg -i "$0" -vcodec prores -profile:v 0 -an "$des/${0%%.mov}.mov"' {} \;
  
  exit;

  but, the it seems to output to the source folder asking for a overwrite. How can i setup the parameters correctly so it outputs to the "destination folder" and keeps the filenames ?

• how to solve Build_one error ?

  8 mai 2014, par vinoth

  i’m trying to separate audio and video from video file after surfing in internet i came to know it can done using FFMPEG.Now i need to build FFMPEG library file for my android application using ubuntu version 14.04(64 bit) NDK R9 ffmpeg 2.2.2 while building it causes an error Build_one file not found.To fix that issue while surfing in internet i got solution Either in ./build_android.sh or in ./configure you have an extra ^M. Open the files with vi and clean them from this garbage i’d fixed it and tried by fixing some other solution also but remains the same.so if someone have any idea please help me guys.