> I kind of hate to post this, since these sorts of library problems often boil
> down to embarrassing pilot error, but I'm stuck with regards to getting JOGL
> to play nicely with ffmpeg on my 64-bit Windows 7 box.
>
> The short story is this: I can't get the FFMpegMediaPlayer class to work
> unless I put the ffmpeg dlls (avcodec, avformat, and avutil) into my machine's
> System32 directory. Adding their location to my system's PATH variable or
> pointing to them with -Djava.library.path hasn't worked.
>
> Here's the longer story:
>
> Eventually I'd like to do some video processing on movie files with JOCL/JOGL,
> but right now I'm just trying to get the MovieSimple demo to work (presently
> located here:
> https://github.com/sgothel/jogl/blob/master/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/av/MovieSimple.java).
>
>
> When I first tried to run the demo (right out of the jar), I was immediately
> presented with the following error:
>
> java.lang.RuntimeException: FFMPEG Tool library incomplete: [ avutil false,
> avformat false, avcodec false]
>     ...
> FFMPEG: Not Available
>
> Oops. I don't have an ffmpeg installation on my box, nor any shared libraries.
> So I headed to ffmpeg.zeranoe.com and downloaded a pre-built windows binary of
> ffmpeg-0.8-win64-shared (the latest version explicitly stated to be supported
> in FFMPEGDynamicLibraryBundleInfo.java), unzipped it, pointed the app to it
> with the VM argument -Djava.library.path="path/to/downloaded/ffmpeg/bin", and
> ran the app again. This time, the error is slightly different:
>
> java.lang.RuntimeException: FFMPEG Tool library incomplete: [ avutil true,
> avformat false, avcodec true]
>     ...
> FFMPEG: Not Available
>
> For some reason, the app picked up the avutil and avcodec dlls, but not
> avformat (yes, the file exists as "avformat-53.dll").
> I then tried clearing the java.libary.path vm argument and adding the
> downloaded ffmpeg binary directory to my system PATH.  Running the app in this
> manner, it fails to pick up any of the three needed ffmpeg libraries. As a
> last resort, I tried dumping the dlls straight into the System32 folder. When
> I try to run the app again, it seems to find what it needs for ffmpeg. Instead
> of an error, it prints the following:
>
> OK: Unresolved symbol <avcodec_open2>, but has alternative <avcodec_open>
> OK: Unresolved symbol <avcodec_decode_audio4>, but has alternative
> <avcodec_decode_audio3>
> OK: Unresolved symbol <avformat_close_input>, but has alternative
> <av_close_input_file>
> OK: Unresolved optional symbol <avformat_network_init>
> OK: Unresolved optional symbol <avformat_network_deinit>
> OK: Unresolved symbol <avformat_find_stream_info>, but has alternative
> <av_find_stream_info>
> LIB_AV Util  : 51.9.1
> LIB_AV Format: 53.4.0
> LIB_AV Codec : 53.7.0
> ...
>
> The app proceeds to run until it encounters an error opening a URL, but that's
> a separate problem.
>
> So what am I doing something wrong here? I don't understand why the app can
> pull the libraries out of System32 but not a folder manually added to the PATH
> environment variable, or why it would only pick up 2 out of 3 files when using
> java.library.path. I poked around briefly in FFMpegDynamicLibraryInfo and the
> related classes and it looks like all three libraries are being loaded in the
> exact same manner. Running with -Djogamp.debug=true hasn't provide me with any
> additional insight - I can see it's checking the right locations, but why it's
> passing them over remains a mystery.
>