GStreamer 1.0 "autovideosink" 打不开显示
GStreamer 1.0 "autovideosink" does not open the display
使用我的 ubuntu 14.04 中安装的默认 GStreamer 0.10 我可以捕获我的 IP 摄像机：
gst-launch-0.10 rtspsrc location=rtsp://admin:123456@192.168.2.254:554/mpeg4cif latency=0 ! decodebin ! ffmpegcolorspace ! autovideosink
显示中的捕获在一段时间后停止的问题。虽然相机还在发送rtsp数据包，直到我停止执行（ctrl+c）。
我最近安装了最新版本的 gstreamer：
sudo add-apt-repository ppa:gstreamer-developers/ppa
sudo apt-get update
sudo apt-get install gstreamer1.0*
检查这个新版本是否解决了这个问题，我可以连续可视化我的 IP 摄像机的流，以便以后使用 openCV 进行处理。
我已经尝试执行下一个管道：
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! h264parse ! omxh264dec ! videoconvert ! autovideosink sync=false
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! h264parse ! decodebin ! videoconvert ! autovideosink sync=false
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! avdec_h264 ! decodebin ! videoconvert ! autovideosink sync=false
没有人有执行问题但没有人打开显示。使用 wireshark 我可以看到相机发送的数据包与使用 gstreamer-0.10 时相同。如果我解决了显示问题，我可以检查这个新版本是否能够连续可视化流，或者它会在一段时间后停止，就像使用 gst-0.10 时一样。
有什么建议可以尝试吗？也许一些不同的管道？
提前致谢。
编辑：
我使用 GST_DEBUG=4 启动命令，最后几行如下所示：
0:00:02.464441942 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'decodebin0' changed state to 4(PLAYING) successfully
0:00:02.464531274 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<h264parse0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.465086353 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2344:gst_bin_element_set_state:<h264parse0> skipping transition from PLAYING to PLAYING
0:00:02.465157352 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'h264parse0' changed state to 4(PLAYING) successfully
0:00:02.465725181 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<rtph264depay0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.465791014 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2344:gst_bin_element_set_state:<rtph264depay0> skipping transition from PLAYING to PLAYING
0:00:02.465838513 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'rtph264depay0' changed state to 4(PLAYING) successfully
0:00:02.466158677 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<rtspsrc0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.466264010 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsink1' changed state to 4(PLAYING) successfully
0:00:02.466379426 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'manager' changed state to 4(PLAYING) successfully
0:00:02.466448925 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsrc0' changed state to 4(PLAYING) successfully
0:00:02.467028587 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsrc1' changed state to 4(PLAYING) successfully
0:00:02.467105419 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsink0' changed state to 4(PLAYING) successfully
0:00:02.467439333 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'fakesrc0' changed state to 4(PLAYING) successfully
0:00:02.467504750 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<rtspsrc0> completed state change to PLAYING
0:00:02.467558749 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'rtspsrc0' changed state to 4(PLAYING) successfully
0:00:02.467620332 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<pipeline0> completed state change to PLAYING
0:00:02.467672581 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<pipeline0> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.585214105 2517 0xb4e12c60 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp
0:00:02.585415937 2517 0xb4e12c60 INFO GST_EVENT gstevent.c:709:gst_event_new_segment: creating segment event time segment start=0:00:00.000000000, stop=99:99:99.999999999, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.000000000, duration 99:99:99.999999999
0:00:03.340291666 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:709:gst_event_new_segment: creating segment event time segment start=0:00:00.000000000, stop=99:99:99.999999999, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.000000000, duration 99:99:99.999999999
0:00:03.345178707 2517 0xb4e12af0 INFO basesrc gstbasesrc.c:2772:gst_base_src_loop:<udpsrc1> marking pending DISCONT
0:00:03.349542005 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp, ssrc=(uint)246759908
0:00:03.352920727 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp
0:00:03.358691179 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp, ssrc=(uint)246759908
我不太了解 gstreamer 的内部工作原理，但一切似乎都是正确的。
调试输出中与 autovideosink 相关的最后几行是：
0:00:02.458109994 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<autovideosink0> current PAUSED pending VOID_PENDING, desired next PLAYING
0:00:02.458178994 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<autovideosink0-actual-sink-nvoverlay> current PAUSED pending VOID_PENDING, desired next PLAYING
0:00:02.460078228 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<autovideosink0-actual-sink-nvoverlay> completed state change to PLAYING
0:00:02.460137644 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<autovideosink0-actual-sink-nvoverlay> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.460328226 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<autovideosink0> child 'autovideosink0-actual-sink-nvoverlay' changed state to 4(PLAYING) successfully
0:00:02.460389892 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<autovideosink0> completed state change to PLAYING
0:00:02.460436142 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<autovideosink0> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.460566224 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'autovideosink0' changed state to 4(PLAYING) successfully
我无法将调试与 0.10 的调试进行比较，因为它非常大...在 gstreamer 1.0 的调试输出中应该有一些 "opened display" 行？
谢谢。
由于我的目标是捕获视频以使用 OpenCV 处理帧，因此我将解决方案更改为使用 gstreamer-0.10 C API。我在此处打开的另一个 post 中解释了解决方案：
使用 C API，我在捕获、处理和可视化方面没有任何问题。 :)
使用我的 ubuntu 14.04 中安装的默认 GStreamer 0.10 我可以捕获我的 IP 摄像机：
gst-launch-0.10 rtspsrc location=rtsp://admin:123456@192.168.2.254:554/mpeg4cif latency=0 ! decodebin ! ffmpegcolorspace ! autovideosink
显示中的捕获在一段时间后停止的问题。虽然相机还在发送rtsp数据包，直到我停止执行（ctrl+c）。
我最近安装了最新版本的 gstreamer：
sudo add-apt-repository ppa:gstreamer-developers/ppa
sudo apt-get update
sudo apt-get install gstreamer1.0*
检查这个新版本是否解决了这个问题，我可以连续可视化我的 IP 摄像机的流，以便以后使用 openCV 进行处理。
我已经尝试执行下一个管道：
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! h264parse ! omxh264dec ! videoconvert ! autovideosink sync=false
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! h264parse ! decodebin ! videoconvert ! autovideosink sync=false
gst-launch-1.0 rtspsrc location=rtsp://admin:123456@192.168.0.123:554/mpeg4cif ! rtph264depay ! avdec_h264 ! decodebin ! videoconvert ! autovideosink sync=false
没有人有执行问题但没有人打开显示。使用 wireshark 我可以看到相机发送的数据包与使用 gstreamer-0.10 时相同。如果我解决了显示问题，我可以检查这个新版本是否能够连续可视化流，或者它会在一段时间后停止，就像使用 gst-0.10 时一样。
有什么建议可以尝试吗？也许一些不同的管道？
提前致谢。
编辑： 我使用 GST_DEBUG=4 启动命令，最后几行如下所示：
0:00:02.464441942 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'decodebin0' changed state to 4(PLAYING) successfully
0:00:02.464531274 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<h264parse0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.465086353 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2344:gst_bin_element_set_state:<h264parse0> skipping transition from PLAYING to PLAYING
0:00:02.465157352 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'h264parse0' changed state to 4(PLAYING) successfully
0:00:02.465725181 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<rtph264depay0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.465791014 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2344:gst_bin_element_set_state:<rtph264depay0> skipping transition from PLAYING to PLAYING
0:00:02.465838513 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'rtph264depay0' changed state to 4(PLAYING) successfully
0:00:02.466158677 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<rtspsrc0> current PLAYING pending VOID_PENDING, desired next PLAYING
0:00:02.466264010 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsink1' changed state to 4(PLAYING) successfully
0:00:02.466379426 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'manager' changed state to 4(PLAYING) successfully
0:00:02.466448925 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsrc0' changed state to 4(PLAYING) successfully
0:00:02.467028587 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsrc1' changed state to 4(PLAYING) successfully
0:00:02.467105419 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'udpsink0' changed state to 4(PLAYING) successfully
0:00:02.467439333 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<rtspsrc0> child 'fakesrc0' changed state to 4(PLAYING) successfully
0:00:02.467504750 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<rtspsrc0> completed state change to PLAYING
0:00:02.467558749 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'rtspsrc0' changed state to 4(PLAYING) successfully
0:00:02.467620332 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<pipeline0> completed state change to PLAYING
0:00:02.467672581 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<pipeline0> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.585214105 2517 0xb4e12c60 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp
0:00:02.585415937 2517 0xb4e12c60 INFO GST_EVENT gstevent.c:709:gst_event_new_segment: creating segment event time segment start=0:00:00.000000000, stop=99:99:99.999999999, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.000000000, duration 99:99:99.999999999
0:00:03.340291666 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:709:gst_event_new_segment: creating segment event time segment start=0:00:00.000000000, stop=99:99:99.999999999, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.000000000, duration 99:99:99.999999999
0:00:03.345178707 2517 0xb4e12af0 INFO basesrc gstbasesrc.c:2772:gst_base_src_loop:<udpsrc1> marking pending DISCONT
0:00:03.349542005 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp, ssrc=(uint)246759908
0:00:03.352920727 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp
0:00:03.358691179 2517 0xb4e12af0 INFO GST_EVENT gstevent.c:628:gst_event_new_caps: creating caps event application/x-rtcp, ssrc=(uint)246759908
我不太了解 gstreamer 的内部工作原理，但一切似乎都是正确的。
调试输出中与 autovideosink 相关的最后几行是：
0:00:02.458109994 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<autovideosink0> current PAUSED pending VOID_PENDING, desired next PLAYING
0:00:02.458178994 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2227:gst_bin_element_set_state:<autovideosink0-actual-sink-nvoverlay> current PAUSED pending VOID_PENDING, desired next PLAYING
0:00:02.460078228 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<autovideosink0-actual-sink-nvoverlay> completed state change to PLAYING
0:00:02.460137644 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<autovideosink0-actual-sink-nvoverlay> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.460328226 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<autovideosink0> child 'autovideosink0-actual-sink-nvoverlay' changed state to 4(PLAYING) successfully
0:00:02.460389892 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2328:gst_element_continue_state:<autovideosink0> completed state change to PLAYING
0:00:02.460436142 2517 0xb4e364f0 INFO GST_STATES gstelement.c:2233:_priv_gst_element_state_changed:<autovideosink0> notifying about state-changed PAUSED to PLAYING (VOID_PENDING pending)
0:00:02.460566224 2517 0xb4e364f0 INFO GST_STATES gstbin.c:2656:gst_bin_change_state_func:<pipeline0> child 'autovideosink0' changed state to 4(PLAYING) successfully
我无法将调试与 0.10 的调试进行比较，因为它非常大...在 gstreamer 1.0 的调试输出中应该有一些 "opened display" 行？
谢谢。
由于我的目标是捕获视频以使用 OpenCV 处理帧，因此我将解决方案更改为使用 gstreamer-0.10 C API。我在此处打开的另一个 post 中解释了解决方案：
使用 C API，我在捕获、处理和可视化方面没有任何问题。 :)