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• Windows Batch Script For loop

  14 avril 2013, par Dobbo1989

  I am new to batch scripts, I am trying to figure out how to create a script that will take all video files in a folder videos*.* and then use ffmpeg on each one and output the files to converted*.mp4 where the filenames are the same.

  However I cant figure out how to get the for loop working so that I can extract the name and extension type of file I am processing.

  for %%f IN (videos\*.*) DO (convert.bat %%f)

  convert.bat

  ffmpeg.exe -i %1 -f mp4 converted\%~n.mp4

  I have tried both with and without double quotes however it wont recognise the file.

• Building ffmpeg for Windows with MSYS and MinGW

  27 février 2014, par Tech Jerk

  I am trying to build ffmpeg for windows (Xp - SP2) as given here.

  ./configure -–extra-cflags=”-mno-cygwin -mms-bitfields” -–extra-ldflags=”-Wl, -add-stdcall-alias” -–enable-memalign-hack -–enable-shared -–disable-static -–target-os=mingw32

  The above command is placed in a myconfig file as instructed and when i run ./myconfig, the following error is displayed :

  Broken Shell detected. Trying alternatives.
  
  Trying Shell bash
  
  Unknown option "-–extra-cflags=-mno-cygwin".

  As suggested in the link i tried various options but still i was not able to succeed.

  My environment is Win XP with :

  • MinGW-5.1.6,
  • bash-2.05b-MSYS,
  • MSYS-1.0.10,
  • ffmpeg-0.5

  EDIT :

  After certain changes in the above command by referring howto i was able to successfully run the make command and i found the following DLL's in their respective directory

  • ffmpeg\libavcodec\avcodec-51.dll
  • ffmpeg\libavformat\avformat-51.dll
  • ffmpeg\libavutil\avutil-49.dll

  But i didn't see any ffmpeg\ffmpeg.exe file :(

  What could have gone wrong ?

• How to correctly install ffmpeg on windows XP ?

  11 avril 2012, par pipen

  I'm working on C++ project on Windows which involve FFmpeg library.
  The problem is that I can't include ffmpeg library to my project. I can't even run any of ffmpeg tutorials or examples. I'm always getting errors like the following :

  tutorial01.c:22:28: ffmpeg/avcodec.h: No such file or directory
  
  tutorial01.c:23:29: ffmpeg/avformat.h: No such file or directory

  and lots of errors like :

  tutorial01.c:33: error: `iFrame' undeclared (first use in this function)

  I found the tutorial with this instructions :

  //gcc -o tutorial01 tutorial01.c -lavformat -lavcodec -lz
  
  //to build (assuming libavformat and libavcodec are correctly installed
  
  //your system).

  After further searching I found out that I should get a static build library version from here :
  http://ffmpeg.zeranoe.com/builds/
  Then I installed this library following these instructions :

  1. Get the latest build from the arrozcru autobuilds page
  2. Unzip the folder into C :/Program Files/ffmpeg
  3. Add C :/Program Files/ffmpeg/bin to your system’s PATH environment variable

  But I still have compilation errors of the same kind.
  So, it seems it was not correct installation.

  What should I do to connect ffmpeg library to my project on Windows ?