strange interaction with imagefreeze and input selector

[Thomas Green]

I am having an issue where I have a live video stream, an image input with imagefreeze, going through an input selector.... the pipeline looks(vaguely) like this


appsrc --> h264legacyparse --> h264decode --
                                                                                             \
                                                                                               ----
                                                                                               ----      Input selector ----- videosink
                                                                                            /
filesrc --> jpegdec --> imagefreeze ------------


I switch from the live stream to the imagefreeze stream and it works well, then I switch back to the live stream, and still looks good.  But when I finally switch back to the imagefreeze stream, then the output is un-recognizable.  Just junk.  Is there something that I'm missing from my pipeline to get the output to be able to switch back and for arbitrarily many times?  Am I mis-understanding how the input selector works?

Thanks in  advance....

Tom