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Sur d’autres sites (13384)

  • 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

  • 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 :

  • Support for .mxf format on ffmpeg-0.9.2

    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 :-

    ffmpeg -i test.mxf -ac 2 output.mpg

    [buffer @ 0x8476e0] Changing frame properties on the fly is not supported.
    Failed to inject frame into filter network

    Can someone assist me regarding it ?

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