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• FFMPEG relocation error for video encoding on Debian [closed]

  29 avril 2012, par Luuk D. Jansen

  I just installed FFMPEG on a Debian production box. As far as I am aware it is a clean install. However, when I try to run FFMPEG I get the following error :

  ffmpeg: relocation error: ffmpeg: symbol av_destruct_packet, version LIBAVFORMAT_52 not defined in file libavformat.so.52 with link time reference

  apt-get tells me that libavformat52 is already the newest version, and so is ffmpeg.
  Is there a simple way to remedy this problem ?

• Linking to libx264 library from c code Ubuntu

  30 janvier 2012, par Martin Conaghan

  I'm trying to write a small C application which uses the x264 API, and I'm having problems compiling the code with a link to the x264 libaray.

  In the /project/ directory there are two sub-folders :
  /project/mycode/ and
  /project/x264-snapshot-20120120-2245.

  I have installed x264 in the latter subdirectory using ./configure and then 'make'. As such the library I think I want to link to is /project/x264-snapshot-20120120-2245/libx264.a

  In /project/mycode/ I have a single source code file (prototype.c), which has the following imports :

  #include 
  
  #include 
  
  #include "../x264-snapshot-20120120-2245/x264_config.h"
  
  #include "../x264-snapshot-20120120-2245/x264.h"

  As expected, if I try to compile without linking to the x264 library, I get an error :

  /project/mycode: gcc -o prototype prototype.c
  
  /tmp/cc5NwRTp.o: In function `main':
  
  prototype.c:(.text+0x6c): undefined reference to `x264_param_default_preset'
  
  prototype.c:(.text+0xf6): undefined reference to `x264_param_apply_profile'
  
  collect2: ld returned 1 exit status

  So I try to link the library I mentioned above, but it isn't found :

  /project/mycode: gcc -o prototype prototype.c -I../x264-snapshot-20120120-2245/ -llibx264.a
  
  /usr/bin/ld: cannot find -llibx264.a
  
  collect2: ld returned 1 exit status

  I've tried a few variations, like :

  gcc -o prototype prototype.c -I../x264-snapshot-20120120-2245/ -l ../x264-snapshot-20120120-2245/libx264.a
  
  gcc -o prototype prototype.c -I../x264-snapshot-20120120-2245/ -llibx264
  
  gcc -I ../x264-snapshot-20120120-2245/ -llibx264.a -o prototype prototype.c

  As is probably obvious by now, I'm fairly new to this, so I'm hoping there is an easy solution

• Why Recode Video FFMPEG on windows Allway Error ?

  9 janvier 2012, par ALexF

  i download ffmpeg in : http://ramiro.arrozcru.org/ffmpeg-vfwcap-noflip.7z

  and run it with commanline : ffmpeg -r 25 -f vfwcap -i 0 output.avi

  but allway error is

  ffmpeg -r 25 -f vfwcap -i 0 output.avi
  FFmpeg version SVN-r22915, Copyright (c) 2000-2010 the FFmpeg developers
  built on Apr 20 2010 00:09:08 with gcc 4.4.2
  configuration : —enable-memalign-hack —cross-prefix=i686-mingw32- —cc=ccach
   i686-mingw32-gcc —arch=i686 —target-os=mingw32 —enable-gpl —enable-libx264
  — enable-pthreads
  libavutil 50.14. 0 / 50.14. 0
  libavcodec 52.66. 0 / 52.66. 0
  libavformat 52.61. 0 / 52.61. 0
  libavdevice 52. 2. 0 / 52. 2. 0
  libswscale 0.10. 0 / 0.10. 0
  [vfwcap @ 012eba60]Could not connect to device.
  0 : Error number -19 occurred

  Link Image :http://nh8.upanh.com/b2.s8.d2/9b09371490590cdabef397ea7705b304_39810848.programmanager20120109110016.png

  why it error, can you fix my commnaline