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我想通過使用shmsink/shmsrc在兩個GStreamer管道之間轉發視頻，並使接收端對視頻進行編碼。GStreamer shmsrc和x264enc不能一起工作
以下是用於在發送側的命令行：
gst-launch-0.10 -v videotestsrc \
! 'video/x-raw-yuv, format=(fourcc)"I420", framerate=30/1, width=1280, height=720' \
! shmsink socket-path=/tmp/xxx shm-size=10000000 wait-for-connection=0 sync=false
下面是接收側的命令行：
gst-launch-0.10 -v shmsrc socket-path=/tmp/xxx \
! 'video/x-raw-yuv, format=(fourcc)"I420", framerate=30/1, width=1280, height=720' \
! x264enc
! filesink location=/tmp/yyy
一個問題是，沒有被記錄。看起來管道沒有滾動。下面示出了輸出消息：
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)I420, framerate=(fraction)30/1, width=(int)1280, height=(int)720
/GstPipeline:pipeline0/GstX264Enc:x264enc0.GstPad:src: caps = video/x-h264, width=(int)1280, height=(int)720, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, codec_data=(buffer)014d401fffe10018674d401feca02802dd8088000003000bb9aca00078c18cb001000468ebecb2, stream-format=(string)avc, alignment=(string)au, level=(string)3.1, profile=(string)main
/GstPipeline:pipeline0/GstX264Enc:x264enc0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)I420, framerate=(fraction)30/1, width=(int)1280, height=(int)720
當我如下除去x264enc，管道被軋製和輸出文件，/ TMP/YYY正在增加。
gst-launch-0.10 -v shmsrc socket-path=/tmp/xxx \
! 'video/x-raw-yuv, format=(fourcc)"I420", framerate=30/1, width=1280, height=720' \
! filesink location=/tmp/yyy
有趣的是，下面的輸出消息顯示了之前未顯示的「新時鐘：GstSytemclock」。
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)I420, framerate=(fraction)30/1, width=(int)1280, height=(int)720
/GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)I420, framerate=(fraction)30/1, width=(int)1280, height=(int)720
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
我不知道爲什麼管道不能用x264enc。任何幫助將非常感激。