streaming - gstreamer udp流很慢

Question

我正在开发视频聊天应用程序，但在UDP流与TCP方面遇到问题。

当我使用下面的管道时，视频流可以接受。 (应用程序本身在python中，但管道本质上如下)

sender: 

gst-launch-0.10 v4l2src ! video/x-raw-yuv,width=320,height=240 ! 
    theoraenc ! oggmux ! tcpclientsink host=nnn.nnn.nnn.nnn port = 5000

receiver: 

gst-launch-0.10 tcpserversrc host=nnn.nnn.nnn.nnn port=5000 
    ! decodebin ! xvimagesink

但是，由于此应用程序要跨/通过NAT执行，因此我需要UDP流传输。
当我将tcpserversrc切换为“udpsrc port = 5000”，而将tcpclientsink切换为“udpsink host = nnn.nnn.nnn.nnnn port = 5000”时，性能急剧下降，以至接收计算机每5秒获得一帧或者。 (即使两个流都在同一台计算机上执行，也会发生这种情况)

发送管道生成以下内容(一次):

WARNING: from element /GstPipeline:pipeline0/GstUDPSink:udpsink0: 
    Internal data flow problem.
    Additional debug info:
    gstbasesink.c(3492): gst_base_sink_chain_unlocked (): /GstPipeline:pipeline0
    /GstUDPSink:udpsink0:
    Received buffer without a new-segment. Assuming timestamps start from 0.

...并且接收管道生成(每20秒左右):

WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: 
    A lot of buffers are being dropped.
    Additional debug info:
    gstbasesink.c(2739): gst_base_sink_is_too_late (): /GstPipeline:pipeline0
    /GstXvImageSink:xvimagesink0:
    There may be a timestamping problem, or this computer is too slow.

我读过文档和联机帮助页，上面充斥着udpsink的各种参数，但效果都不佳。
谁能将我引向我完全没有领会的(无疑是显而易见的)事情？
提前致谢 :)

Answer 1

我有同样的问题。
尝试设定

sync=false

在tcpclientsink和xvimagesink上