[gst-devel] GST_FLOW_WRONG_STATE

[Radivoje Jovanovic]

So the pipeline I am using is:
gst-launch-0.10 filesrc location=MY_MOVIE ! qtdemux name=t ! queue  !
mpeg4dec ! MY_VIDEO_SINK t. ! queue ! faad ! alsasink
This pipeline will hang and after CTRL-C the mpeg4dec will show the message
that is the result of calling gst_push_pad. This gst_push_pad will return
GST_FLOW_WRONG_STATE.

If I run gst-launch-0.10 filesrc location=MY_MOVIE ! qtdemux name=t ! queue
! mpeg4dec ! MY_VIDEO_SINK
the video will play just fine

If I run:
gst-launch-0.10 filesrc location=MY_MOVIE ! qtdemux name=t ! queue ! faad !
alsasink
the audio from the audio will play just fine.

I am not sure which code would be helpful since I have a lot of it.
Thanks for the GST_DEBUG info.

Ogi


On Wed, Dec 8, 2010 at 4:05 PM, Tim-Philipp Müller <t.i.m at zen.co.uk> wrote:

> On Wed, 2010-12-08 at 12:53 -0800, Radivoje Jovanovic wrote:
>
> > I have a video sink and ALSA driver to be used to play videos on the
> > platform. If I play video or audio by them self everything works fine,
> > but if I specify the whole pipeline for video and audio, the video
> > decoder (in pipeline right before the sink) comes back with the
> > message:
> > "The decoded frame did not successfully push out to downstream
> > element"
> > The message comes because the gst_pad_push have returned with
> > GST_FLOW_WRONG_STATE instead GST_FLOW_OK.
> >
> > Any idea why this might happen?
>
> It usually helps if you post your exact pipeline and/or any code
> snippets that go with it.
>
> FLOW_WRONG_STATE is what you get when a pad is flushing, which may be
> normal (happens during a flushing seek, to make the old streaming thread
> stop) or because you forgot to set an element into PAUSED/PLAYING state
> (e.g. because you added it from a pad-added or new-decoded-pad callback
> or so).
>
> The GST_DEBUG=*:5 log might give you more information (just grep for
> wrong-state and read the lines before that).
>
> Cheers
>  -Tim
>
>
>
>
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