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• SOLVED - Compiling FFMPEG on Windows with Cywin and NDK r5

  19 mai 2012, par protectedmember

  This isn't a question - it's an answer for alll of you who have been facing the same problems as I have. I've been trying to compile this thing for a while now and I know of the numerous posts floating around the internet offering help. I have read and tried most of the suggestions and wanted to colate my success into this single post for others to benefit from.

  Since I don't have a blog, I thought it wouldn't hurt to post on here instead.

  I have managed to compile FFMPEG 0.10.3 (Freedom) on Windows 7 (32 bit) using NDK r5 and Cygwin. The steps :

  1 - Download/install Cygwin in the root of your C drive. I'm not going to give instructions on this, it's simple enough and there are plenty of tutorials on this.

  2 - Download NDK r5 from here and extract to the root of your C drive.

  3 - Download FFMPEG 0.10.3 from here and extract to the root of your C drive.

  4 - Open the file 'configure' in the root of the FFMPEG directory in a text editor.

  5 - Comment out lines 2073, 2074 and 2075.

  6 - Below 2075, add the following line :

  TMPDIR=c :/cygwin/tmp

  7 - Download this script (thankyou roman10) and place it inside your FFMPEG root directory. Rename the file to

  build_android.sh

  8 - Open the script in a text editor and edit line 17 to read

  c :/android-ndk-r5

  9 - Click start > run and type "bash" (without the speech marks) and press enter.

  10 - Type the following and press enter :

  cd /cygdrive/c/ffmpeg-0.10.3

  11 - Type the following and press enter :

  ./build_android.sh

  12 - Sit back and wait... libffmpeg.so will soon appear in your "c :\ffmpeg-0.10.3\android\" directory (where is defined in the bottom of the script from roman10's blog). The default architecture is armv7-a.

  The script from roman10's blog will actually compile quite a large shared object (.so) file. The compiler flags can be adjusted to suit your needs in the script from roman10's blog.

  I hope this helps,

  P.

• Encode a movie with Unicode filename in Windows using Popen

  15 avril 2013, par Tetsu

  I want to encode a movie through IO.popen by ruby(1.9.3) in windows 7.
  If the file name contains only ascii strings, encoding proceed normally.
  But with unicode filename the script returns "No such file or directory" error.
  Like following code.

  #-*- encoding: utf-8 -*-
  
  command = "ffmpeg -i ü.rm"
  
  IO.popen(command){|pipe|
  
    pipe.each{|line|
  
      p line
  
    }
  
  }

  I couldn't find whether the problem causes by ffmpeg or ruby.
  How can fix this problem ?

• FFmpeg on windows 7, encode video in mp4 for HTML 5 video fail

  14 avril 2013, par manonthemoon

  I try to encode my video with FFmpeg, to convert to mp4.
  But the video doesn't work on html 5. I don't understand why.

  I found this command on the web and I tried it :

  ffmpeg.exe -i wildlife.wmv -b 1500k -vpre slow -vpre baseline -vcode libx264 \
    -g 30 wildlife.mp4
  

  But it fails, and I have this error :

  File for preset 'slow' not found

  I check the folder "presets" and the preset is on the folder, so I don't understand why it's telling me this error.
  I tried with the complete path, it fails too.