having trouble with a pipeline that splits (demux) and then joins (mux)

[David Ing]

At first glance this looks like this should work.  It might be a thread
deadlocking issue:  When faced with issues like this I start adding queues
all around my pipeline and it gets past the deadlock.

If you use a --gst-debug-level=3 parameter you might catch a hint about the
underlying problem.  If you observe a failure of state transition (e.g. the
pipeline won't switch from READY to PAUSED) then I have seen that happen
when using the mingw build of gstreamer (it happens rarely in specific
cases) in which case you should try using the MSVC binaries on Windows or
switching to Linux.

On Mon, Sep 30, 2019 at 9:07 PM Brian Dilley <bdilley at penguinpimps.com>
wrote:

> I'm learning GStreamer and wondering why the following doesn't work:
>
>
> filesrc location=/some/test.flv caps=video/x-flv ! flvdemux name=d d. !
> queue ! mux. d. ! queue ! mux. flvmux name=mux ! filesink
> location=/some/output.flv
>
>
> I'm confused because the flvdemux creates identical pads (caps-wise) to
> what the flvmux accepts... yet it fails saying that it was unable to
> connect them.
>
> I've tried this as well with no luck: filesrc location=/some/test.flv
> caps=video/x-flv ! flvdemux name=d d.audio_00 ! queue ! mux. d.video_00 !
> queue ! mux. flvmux name=mux ! filesink location=/some/output.flv
>
>
> what am i missing here?
>
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