[gst-devel] GST_FLOW_WRONG_STATE

[ved kpl]

On Thu, Dec 9, 2010 at 6:26 AM, Radivoje Jovanovic
<radivojejovanovic at gmail.com> wrote:
> 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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>
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