Video package: Difference between revisions

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  tar xzf libav-11.4.tar.gz
  tar xzf libav-11.4.tar.gz
  cd libav-11.4
  cd libav-11.4
  ./configure
  ./configure --enable-pic
  make -j 4
  make -j 4


Line 31: Line 31:
== On Windows ==
== On Windows ==


=== using official mxe-build and ffmpeg binaries ===
The MXE builds >= 4.0.1-rc3 already includes the ffmpeg libs so video should run out of the box.


This is at the moment the preferred way for windows users and assumes that you've installed Octave from the official MXE build from https://ftp.gnu.org/gnu/octave/windows/ to the default path.
[[Category:Octave Forge]]
 
Download the ffmpeg binaries for windows from https://ffmpeg.zeranoe.com/builds/. You need the "32-bit Dev" and "32-bit Shared" archive. These instructions were tested with
 
* ffmpeg-20160105-git-68eb208-win32-shared.7z
* ffmpeg-20160105-git-68eb208-win32-dev.7z
 
Now
 
* Extract the bin/*.dll from ffmpeg-20160105-git-68eb208-win32-shared.7z to C:\Octave\Octave-4.0.0\bin
* Extract include/* from ffmpeg-20160105-git-68eb208-win32-dev.7z to C:\Octave\Octave-4.0.0\include (You should now, for example, see C:\Octave\Octave-4.0.0\include\libavutil\version.h)
* Extract lib/* from ffmpeg-20160105-git-68eb208-win32-dev.7z to C:\Octave\Octave-4.0.0\lib
 
Download a patched version (no pkg_config check for ffmpeg and PixelFormat -> AVPixelFormat) from [http://www.tech-chat.de/files/video-1.2.1_win_ffmpeg.tar.gz video-1.2.1_win_ffmpeg.tar.gz (sha1sum 3ef5b0dca471175daf769bd813b6de7fa85759df)]
or grab the source and apply [http://www.tech-chat.de/files/video-1.2.1_win_ffmpeg.patch this patch]
 
Compile and install from Octave with
<code>
pkg -verbose install video-1.2.1_win_ffmpeg.tar.gz
</code>
 
Load it before any usage:
<code>
pkg load video
</code>
 
=== mxe-octave ===
You can also use mxe-octave to include ffmpeg, there is already a target for it.
 
= Known bugs =
* On MXE-Octave with ffmpeg crosscompiled "clear all" after using "addframe" causes a segmentation fault
 
<code>
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1956.0xdd4]
0x77d6e3c6 in ntdll!RtlInitUnicodeString () from C:\Windows\SysWOW64\ntdll.dll
(gdb) bt
#0  0x77d6e3c6 in ntdll!RtlInitUnicodeString ()
  from C:\Windows\SysWOW64\ntdll.dll
#1  0x19380000 in ?? ()
#2  0x77d6e013 in ntdll!RtlFreeHeap () from C:\Windows\SysWOW64\ntdll.dll
#3  0x778698cd in msvcrt!free () from C:\Windows\syswow64\msvcrt.dll
#4  0x19380000 in ?? ()
#5  0x1dc016c6 in AVHandler::~AVHandler (this=0x1da579a8,
    __in_chrg=<optimized out>) at AVHandler.cc:99
#6  0x1dc0384a in Avifile::~Avifile (this=0x1dac8570,
    __in_chrg=<optimized out>) at oct-avifile.cc:149
</code>
 
[[Category:Octave-Forge]]

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