'Write, then read rtpopus to file with gstreamer?

Is it possible to write rtpopus to a file, then read it back with gstreamer? It seems simple but I'm getting nowhere with it and can't seem to find any information online. Here is my attempt:

gst-launch-1.0.exe audiotestsrc ! opusenc ! rtpopuspay ! filesink location=test.opus

Then, close and run:

gst-launch-1.0.exe filesrc location="test.opus" ! rtpopusdepay ! fakesink dump=true

gstreamer fails with:

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal data stream error.
Additional debug info:
../libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): /GstPipeline:pipeline0/GstFileSrc:filesrc0:
streaming stopped, reason error (-5)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
audiogstreamerrtpopus


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