我得到破碎的ffmpeg错误，而VideoWrite使用X264 Fourcc编解码器.我已经安装了所有的依赖.我怎么能纠正这个问题.我一直在使用的示例代码如下.

VideoWriter oVideoWriter ("path.mp4", CV_FOURCC('X','2','6','4'), 15, frameSize, false);

操作系统：Ubuntu 14.04 64-bit
控制台错误：

[libx264 @ 0x8d6220] broken ffmpeg default settings detected
[libx264 @ 0x8d6220] use an encoding preset (e.g. -vpre medium)
[libx264 @ 0x8d6220] preset usage: -vpre <speed> -vpre <profile>
[libx264 @ 0x8d6220] speed presets are listed in x264 --help
[libx264 @ 0x8d6220] profile is optional; x264 defaults to high
Could not open codec 'libx264': Unspecified errorOpenCV Error: Unsupported format or combination of formats (Your version of Gstreamer doesn't support this codec acutally or needed plugin missing.) in CvVideoWriter_GStreamer::open, file /home/mbox140/Development/opencv-2.4.9/modules/highgui/src/cap_gstreamer.cpp, line 518
terminate called after throwing an instance of 'cv::Exception'
  what():  /home/mbox140/Development/opencv-2.4.9/modules/highgui/src/cap_gstreamer.cpp:518: error: (-210) Your version of Gstreamer doesn't support this codec acutally or needed plugin missing. in function CvVideoWriter_GStreamer::open

建议我任何解决方案。