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• Building with Visual Studio 2010, MFC, and FFmpeg

  11 janvier 2013, par spurgeon

  I'm working on building a Windows MFC application in Visual Studio 2010 using FFmpeg and SDL. However, I can't get the project to build after creating an MFC project from scratch and including the FFmpeg development libraries (avcodec.lib, avdevice.lib, avformat.lib, etc.). I'm using the development build from Zeranoe FFmpeg. I have configured the following in the Project Properties :

  1. Set VC++ Directories -> Include Directories (added the FFmpeg "include" directories)
  2. Set VC++ Directories -> Library Directories (to the FFmpeg "lib" directory)
  3. Set Linker -> Input -> Additional Dependencies (to include avcodec.lib, etc.)

  For what it's worth, the build succeeds when I omit FFmpeg's "include\libavutil" include from the VC++ Directories -> Include Directories.

  Below are some of the first build errors I'm receiving (I won't post all, since it's long). Any help would be appreciated.

  ClCompile:
stdafx.cpp

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\atltime.h(371): error C3861: '_mktime64': identifier not found

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\atltime.h(386): error C3861: '_localtime64_s': identifier not found

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\atltime.h(409): error C3861: '_gmtime64_s': identifier not found

  c:\program files\microsoft sdks\windows\v7.0a\include\intsafe.h(144): warning C4005: 'INT8_MIN' : macro redefinition

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\afxtaskspane.h(279): error C2146: syntax error : missing ';' before identifier 'm_nLastAnimTime'

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\afxribboncategory.h(282): error C2146: syntax error : missing ';' before identifier 'm_ActiveTime'

  c:\program files\microsoft visual studio 10.0\vc\atlmfc\include\afxdockingmanager.h(353): error C2146: syntax error : missing ';' before identifier 'm_clkLastTime'

  Build FAILED.

  I've referenced both of these articles, which were of help :

  • Visual Studio and libavcodec
  • Visual Studio and SDL

• How to install JavaCV on android and use FFmpegFrameGrabber

  30 janvier 2013, par Muhammad Afzal

  Can someone guide me what am I missing ? I have double checked all the following settings,

  Following steps I followed,

  1. Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.3-android-arm.zip, and ffmpeg-1.0-android-arm.zip directly into the newly created "libs/armeabi" folder
  
  
  
  2. Navigate to Project > Properties > Java Build Path > Libraries and click "Add JARs...".
  
  Select both javacpp.jar and javacv.jar from the newly created "libs" folder. 
  
  
  
  3. Set the environment variable path to C:\opencv\build\x64\vc10\bin;C:\ffmpeg-64\bin;

  Source Code compiles fine but after installing the apk while debugging on HTC wildfire S Device, crashes on following line

  FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(Environment.getExternalStorageDirectory() + "/DCIM/100MEDIA/VIDEO0015.3gp");

  and gives following exception,

  java.lang.UnsatisfiedLinkError: Couldn't load jniavutil: findLibrary returned null

• Converting from MXF to MPEG format with FFmpeg [migrated]

  2 mars 2013, par user2060812

  We're trying to convert .mxf video to .mpeg on ffmpeg-0.9.2 and looks like 0.9.2 version doesn't support .mxf conversion to .mpeg.

  We don't want to switch on latest 0.11 version of ffmpeg as the video result is too poor for latest version. Maybe we're not using the right command to convert .mxf format.

  Below is the error on conversion command :

  [root@localhost ~]# ffmpeg -i test.mxf  -ac 2 output.mpg                                                                                     ffmpeg version 0.9.2-syslint, Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Mar  1 2013 22:34:33 with gcc 4.6.3
  
    configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
  
    libavutil    51. 32. 0 / 51. 54.100
  
    libavcodec   53. 42. 4 / 53. 42. 4
  
    libavformat  53. 24. 2 / 53. 24. 2
  
    libavdevice  53.  4. 0 / 53.  4. 0
  
    libavfilter   2. 53. 0 /  2. 77.100
  
    libswscale    2.  1. 0 /  2.  1.100
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mxf, from `test.mxf`:
  
    Duration: 00:00:07.04, start: 0.000000, bitrate: 62580 kb/s
  
      Stream #0:0: Video: mpeg2video (4:2:2), yuv422p, 720x608 [SAR 608:405 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Stream #0:1: Audio: pcm_s16le, 48000 Hz, 8 channels, s16, 6144 kb/s
  
  File `output.mpg` already exists. Overwrite ? [y/N] y
  
  Incompatible pixel format `yuv422p` for codec `mpeg1video`, auto-selecting format `yuv420p`
  
  [buffer @ 0x8476e0] w:720 h:608 pixfmt:yuv422p tb:1/1000000 sar:608/405 sws_param:
  
  [buffersink @ 0x847b80] auto-inserting filter `auto-inserted scaler 0` between the filter `src` and the filter `out`
  
  [scale @ 0x848220] w:720 h:608 fmt:yuv422p sar:608/405 -> w:720 h:608 fmt:yuv420p sar:608/405 flags:0x4
  
  [mpeg @ 0x84a7a0] VBV buffer size not set, muxing may fail
  
  Output #0, mpeg, to `output.mpg`:
  
    Metadata:
  
      encoder         : Lavf53.24.2
  
      Stream #0:0: Video: mpeg1video, yuv420p, 720x608 [SAR 608:405 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
      Stream #0:1: Audio: mp2, 48000 Hz, 2 channels, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg2video -> mpeg1video)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> mp2)
  
  Press [q] to stop, [?] for help
  
  [buffer @ 0x8476e0] Changing frame properties on the fly is not supported.
  
  Failed to inject frame into filter network