[Paraview] compiling ffmpeg for paraview on mac os x

[Berk Geveci]

Here if what I used to build ffmpeg:

FFmpeg version SVN-r6375, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-shared --disable-mmx --disable-vhook
  libavutil version: 49.0.1
  libavcodec version: 51.16.0
  libavformat version: 50.5.0
  built on Mar 30 2007 14:01:41, gcc: 4.0.1 (Apple Computer, Inc. build 5367)

-berk

On Sat, Apr 26, 2008 at 10:40 AM, Michael Wild <themiwi at gmail.com> wrote:
> Hi all
>
>
>  I tried to get ffmpeg to compile the way as described in
> http://www.vtk.org/files/support/ffmpeg_source.tar.gz for use in ParaView
> 3.3.0 CVS. But the instructions are quite stale and the included source does
> not compile on intel macs. So I pulled the current HEAD from ffmpeg
> subversion repository, but found it to be in a state which doesn't compile.
> I then extracted the tar.gz provided by fink (versioned ffmpeg-0.4.20071217)
> which compiles cleanly. However, there seems to be a change in the API which
> required me to remove the & in the expression
> url_fclose(&this->avFormatContext->pb) of the file
> VTK/IO/vtkFFMPEGWriter.cxx.
>
>  Things compiled now, but whenever I try to export a movie, ffmpeg reports
> on the command line that "[msmpeg4 @ 0x581c810]bitrate tolerance too small
> for bitrate" and ParaView tells me that "vtkFFMPEGWriter (0x1ce649b0): Error
> initializing video stream."
>
>  Ok, but in binary distribution of ParaView-3.2.1 things work, so I tried to
> figure out which version of ffmpeg has been used for the creation of that
> particular binary. I figured out that the ffmpeg revision used must be in
> the range 6350-6639, because otherwise the library versions don't match. But
> which of these 290 revisions? I tried some, namely 6350 and 6639, but both
> do not compile properly. For the latter I had to hack the configure script
> to create a valid config.mak and the common.mak I had to change in order to
> prevent the thing trying to link libavutil against itself (quite
> idiotic...). Finally things failed when the assembler choked on
> non-relocatable assembly code in libavcodec/cabac.h. Configuring ffmpeg to
> create static libraries however worked. But then linking libvtkIO requires
> the "-read_only_relocs suppress" flag to be set (which I'm not quite sure
> about what it does)...
>
>  At that point compiling succeeded, and I could even create an avi movie.
> However, the output is just black.
>
>  I hope that someone from the developer team can shed some light on how to
> get ffmepg working with paraview on Mac OS X.
>
>  Michael
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