Python Gstreamer: Internal data flow error porting program from 0.10 to 1.0
HM
hmarti at uji.es
Wed Jun 22 10:43:59 UTC 2016
Thanks, Shishir. I add the listener to the "pad-added" signal for qtdemux and
try to link the pad with queue:
def pad_added_handler(self, src, new_pad):
print("Received new pad {0} from {1}".format(new_pad, src))
if new_pad.is_linked():
print ("We are already linked. Ignoring")
return
new_pad_type = new_pad.query_caps(None).to_string()
print ("New pad added of type: {0}".format(new_pad_type))
ret = new_pad.link(self.queue.get_static_pad("sink"))
return
But now I'm having "Incompatible pads" with tsdemux and queue:
0:00:01.809406744 9876 0x2b378f0 WARN default
descriptions.c:612:format_info_get_desc: Unexpected MPEG-1 layer in
audio/mpeg, mpegversion=(int)1
0:00:01.809443654 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:897:gst_element_get_static_pad: found pad tsdemux0:sink
0:00:01.809525077 9876 0x2b378f0 INFO GST_EVENT
gstevent.c:628:gst_event_new_caps: creating caps event video/x-h264,
stream-format=(string)byte-stream, alignment=(string)nal
0:00:01.809591660 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:646:gst_element_add_pad:<tsdemux0> adding pad 'audio_0041'
Received new pad <Pad object at 0x7fc2591ebaf0 (GstPad at 0x29aba70)> from
<__main__.GstTSDemux object at 0x7fc263a36370 (GstTSDemux at 0x29d0100)>
New pad added of type: audio/mpeg, mpegversion=(int)1
0:00:01.810264717 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:897:gst_element_get_static_pad: found pad queue0:sink
0:00:01.810389462 9876 0x2b378f0 INFO GST_PADS
gstpad.c:2120:gst_pad_link_prepare: trying to link tsdemux0:audio_0041 and
queue0:sink
0:00:01.810412086 9876 0x2b378f0 INFO GST_PADS
gstpad.c:2176:gst_pad_link_prepare: caps are incompatible
0:00:01.810429086 9876 0x2b378f0 INFO GST_EVENT
gstevent.c:709:gst_event_new_segment: creating segment event time segment
start=0:00:00.000000000, stop=99:99:99.999999999, rate=1,000000,
applied_rate=1,000000, flags=0x00, time=0:00:00.000000000,
base=0:00:00.000000000, position 0:00:00.000000000, duration
99:99:99.999999999
0:00:01.812892209 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:646:gst_element_add_pad:<tsdemux0> adding pad 'video_0040'
Received new pad <Pad object at 0x7fc2591ebaf0 (GstPad at 0x29abca0)> from
<__main__.GstTSDemux object at 0x7fc263a36370 (GstTSDemux at 0x29d0100)>
New pad added of type: video/x-h264, stream-format=(string)byte-stream,
alignment=(string)nal
0:00:01.813000182 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:897:gst_element_get_static_pad: found pad queue0:sink
0:00:01.813021020 9876 0x2b378f0 INFO GST_PADS
gstpad.c:2120:gst_pad_link_prepare: trying to link tsdemux0:video_0040 and
queue0:sink
0:00:01.813047798 9876 0x2b378f0 INFO GST_PADS
gstpad.c:2176:gst_pad_link_prepare: caps are incompatible
0:00:01.813118214 9876 0x2b378f0 INFO basesrc
gstbasesrc.c:2785:gst_base_src_loop:<src> pausing after gst_pad_push() =
not-linked
0:00:01.813134546 9876 0x2b378f0 WARN basesrc
gstbasesrc.c:2865:gst_base_src_loop:<src> error: Internal data flow error.
0:00:01.813139330 9876 0x2b378f0 WARN basesrc
gstbasesrc.c:2865:gst_base_src_loop:<src> error: streaming task paused,
reason not-linked (-1)
0:00:01.813154141 9876 0x2b378f0 INFO GST_ERROR_SYSTEM
gstelement.c:1835:gst_element_message_full:<src> posting message: Internal
data flow error.
0:00:01.813175931 9876 0x2b378f0 INFO GST_ERROR_SYSTEM
gstelement.c:1858:gst_element_message_full:<src> posted error message:
Internal data flow error.
0:00:01.813260218 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:766:gst_element_remove_pad:<tsdemux0> removing pad 'audio_0041'
0:00:01.813287556 9876 0x2b378f0 INFO GST_ELEMENT_PADS
gstelement.c:766:gst_element_remove_pad:<tsdemux0> removing pad 'video_0040'
('on_error():', (GError('Internal data flow error.',), 'gstbasesrc.c(2865):
gst_base_src_loop (): /GstPipeline:pipeline0/GstUDPSrc:src:\nstreaming task
paused, reason not-linked (-1)'))
0:00:01.813342610 9876 0x2b378f0 INFO task
gsttask.c:300:gst_task_func:<src:src> Task going to paused
--
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