VideoWriter failure: "Gstreamer Opencv backend does not support this codec actually"

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Hello everyone!

I am running OpenCV 2.4.7, compiled on 64 bit Ubuntu 12.04.

I can read video files just fine (cv2.VideoCapture).

However, using any codec with cv2.VideoWriter yields the following error:

error: /home/-----/opencv-2.4.7/modules/highgui/src/cap_gstreamer.cpp:505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally. in function CvVideoWriter_GStreamer::open

Does anyone know what could be causing the problem? Is it a gstreamer version error or something?

Below is the output of cmake for this opencv install:

-- Detected version of GNU GCC: 46 (406)
-- Could NOT find Jasper (missing:  JASPER_LIBRARY JASPER_INCLUDE_DIR) 
-- checking for module 'libdc1394-2'
--   package 'libdc1394-2' not found
-- checking for module 'libdc1394'
--   package 'libdc1394' not found
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - found 
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- 
-- General configuration for OpenCV 2.4.7 =====================================
--   Version control:               unknown
-- 
--   Platform:
--     Host:                        Linux 3.2.0-54-generic x86_64
--     CMake:                       2.8.7
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               Release
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/c++  (ver 4.6)
--     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations  -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG -ggdb3
--     C Compiler:                  /usr/bin/gcc
--     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type  -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type  -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG -ggdb3
--     Linker flags (Release):      
--     Linker flags (Debug):        
--     Precompiled headers:         YES
-- 
--   OpenCV modules:
--     To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
--     Disabled:                    world
--     Disabled by dependency:      -
--     Unavailable:                 androidcamera java
-- 
--   GUI: 
--     QT:                          NO
--     GTK+ 2.x:                    YES (ver 2.24.10)
--     GThread :                    YES (ver 2.32.3)
--     GtkGlExt:                    NO
--     OpenGL support:              NO
-- 
--   Media I/O: 
--     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
--     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
--     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
--     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
--     JPEG 2000:                   build (ver 1.900.1)
--     OpenEXR:                     build (ver 1.7.1)
- 
--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  NO 
--     FFMPEG:                      YES
--       codec:                     YES (ver 54 ...