示例1 deftest_gstreamer():try:gst.Bin()exceptAttributeError:returnFalseforelementin"capsfilter tee appsink autoaudiosink".split():try:gst.element_factory_make(element)exceptgst.ElementNotFoundError:returnFalsereturnTrue 示例2 def__init_pipeline(self):ifnotgstreamer_is_working:self.stop()fromblapla...