我有使用GStreamer的C代码。我刚刚在Ubuntu 14.04.5 LTS上安装了gst-launch-1.0，之后我通过命令验证了可以正常安装
gst-inspect-1.0 fakesrc
会打印出与此相关的信息。也已通过
进行了检查gst-launch-1.0 -v fakesrc silence = false num-buffers = 3！假水槽 silent = false
命令会产生输出。但是当我尝试通过运行
测试显示的视频时gst-launch-1.0 videotestsrc！视频转换！自动视频接收器
它在日志下面给了我
Setting pipeline to PAUSED ...
libEGL warning: DRI2: xcb_connect failed
libEGL warning: DRI2: xcb_connect failed
libEGL warning: GLX: failed to load GLX
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstXvImageSink:autovideosink0-actual-sink-xvimage: Could not initialise Xv output
Additional debug info:
xvimagesink.c(1765): gst_xvimagesink_open (): /GstXvImageSink:autovideosink0-actual-sink-xvimage:
Could not open display (null)
Setting pipeline to NULL ...
Freeing pipeline ...
请帮助。