Compiling on ubuntu:

install build-essential (http://packages.ubuntu.com/edgy/devel/build-essential) as well.

Build ffmpeg shared libraries (flag to configure)

export LD_LIBRARY_PATH=/usr/local/lib

native example now works.

Running java sample:
Get:

Compiler did not align stack variables. Libavcodec has been miscompiled
and may be very slow or crash. This is not a bug in libavcodec,
but in the compiler. You may try recompiling using gcc >= 4.2.

Occurs during:

(AVFORMAT.av_find_stream_info(pFormatCtx)

Not sure what is messing up the stack?  JNA?  A bug in my code?

./configure --disable-mmx --enable-shared

to see if that helps.



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development notes:

allformats.c is where protocols, like file:, http: etc are registered.

For FMJ it might be useful to register a custom protocol with callbacks.

It is looking more and more like an additional library will be needed with custom C code, since JNA probably cannot access global variables.