Tim, FYI: Upgrading to GStreamer 1.9,9 resolved the crash that I was seeing using the intervideosrc/sink (previously using 1.8.0). The test application is working now and i was also able to get my target application working. I can now seek forwards and backwards and change speed in my video file playback while it is streaming over UDP and view the continuous stream using VLC (or gstreamer). Thanks a lot for your suggestion. It was invaluable! Doug On Fri, Sep 30, 2016 at 6:05 PM, Doug Wood <<a href="/user/SendEmail.jtp?type=node&node=4680014&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote: <div class='shrinkable-quote'> > I modified my application to use the intervideosink and intervediosrc > but I am getting a crash when the playbin pipeline is started. I > reproduced the problem in the included test application. With > debugging at level 4, the diagnostic output indicated the assertion > below. > > Any suggestions on what I am doing wrong or where the problem is? I > am using release 1.8.0. > > 0:00:00.232899237 14216 00000000041C1140 INFO GST_STATES > gstelement.c:2277:_priv_gst_element_state_changed:<playbin0> notifying > about state-changed PAUSED to PLAYING (VOID_PENDING pending) > 0:00:00.232934304 14216 0000000002B04000 INFO GST_BUS > gstbus.c:565:gst_bus_timed_pop_filtered:<bus1> we got woken up, > recheck for message > 0:00:00.247985542 14216 00000000033EE440 INFO GST_EVENT > gstevent.c:679:gst_event_new_caps: creating caps event video/x-raw, > format=(string)I420, width=(int)1442, height=(int)1011, > interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, > chroma-site=(string)mpeg2, colorimetry=(string)bt709, > framerate=(fraction)25/1 > 0:00:00.248142062 14216 00000000033EE440 INFO basetransform > gstbasetransform.c:1367:gst_base_transform_setcaps:<capsfilter0> reuse > caps > 0:00:00.248173709 14216 00000000033EE440 INFO GST_EVENT > gstevent.c:679:gst_event_new_caps: creating caps event video/x-raw, > format=(string)I420, width=(int)1442, height=(int)1011, > interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, > chroma-site=(string)mpeg2, colorimetry=(string)bt709, > framerate=(fraction)25/1 > 0:00:00.248360165 14216 00000000033EE440 INFO basetransform > gstbasetransform.c:1367:gst_base_transform_setcaps:<videoconvert0> > reuse caps > 0:00:00.248417043 14216 00000000033EE440 INFO GST_EVENT > gstevent.c:679:gst_event_new_caps: creating caps event video/x-raw, > format=(string)I420, width=(int)1442, height=(int)1011, > interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, > chroma-site=(string)mpeg2, colorimetry=(string)bt709, > framerate=(fraction)25/1 > 0:00:00.249147902 14216 00000000033EE440 INFO libav > :0:: Assertion v>0 && v<=(1 ? 32 : 16) failed at libavutil/mem.c:233 > > This application has requested the Runtime to terminate it in an unusual way. > Please contact the application's support team for more information. > > > > #include <gst/gst.h> > > GstElement* buildPipeline(char* pipelineDescription) > { > GError* error=NULL; > GstElement* pipeline = gst_parse_launch(pipelineDescription, &error); > > if(error != NULL) > { > g_printerr("Error: %s\n", error->message); > return NULL; > } > > if(pipeline == NULL) > { > g_printerr("Error creating pipeline\n"); > return NULL; > } > > return pipeline; > } > > > gint main (gint argc, gchar *argv[]) > { > GstStateChangeReturn retSink; > GstStateChangeReturn retSrc; > > // init GStreamer > gst_init (&argc, &argv); > > char* sinkPipelineDescription = "playbin > uri=file:///C:/gstreamer/1.0/x86_64/bin/captureMakLand.mpeg"; > char* srcPipelineDescription ="intervideosrc channel=V1 ! > video/x-raw,framerate=25/1 ! videoconvert ! avenc_mpeg2video ! > mpegtsmux ! udpsink host=127.0.0.255 port=5000"; > > // setup pipeline > GstElement* mySinkPipeline = buildPipeline(sinkPipelineDescription); > GstElement* mySrcPipeline = buildPipeline(srcPipelineDescription); > > > if (mySinkPipeline && mySrcPipeline) > { > GstElement* interVideoSink = > gst_element_factory_make("intervideosink", "interVideoSink"); > > g_object_set (GST_OBJECT (interVideoSink), "channel", "V1", NULL); > g_object_set (GST_OBJECT (mySinkPipeline), "video-sink", > interVideoSink, NULL); > > retSrc = gst_element_set_state (mySrcPipeline, GST_STATE_PLAYING); > retSink = gst_element_set_state (mySinkPipeline, GST_STATE_PLAYING); > if (retSink != GST_STATE_CHANGE_FAILURE && retSrc != > GST_STATE_CHANGE_FAILURE) > { > /* Wait until error or EOS */ > GstBus *bus = gst_element_get_bus (mySinkPipeline); > GstMessage *msg = gst_bus_timed_pop_filtered (bus, > GST_CLOCK_TIME_NONE, GstMessageType(GST_MESSAGE_ERROR | > GST_MESSAGE_EOS)); > > /* Parse message */ > if (msg != NULL) > { > GError *err; > gchar *debug_info; > > switch (GST_MESSAGE_TYPE (msg)) > { > case GST_MESSAGE_ERROR: > gst_message_parse_error (msg, &err, &debug_info); > g_printerr ("Error received from element %s: %s\n", > GST_OBJECT_NAME (msg->src), err->message); > g_printerr ("Debugging information: %s\n", debug_info ? > debug_info : "none"); > g_clear_error (&err); > g_free (debug_info); > break; > case GST_MESSAGE_EOS: > g_print ("End-Of-Stream reached.\n"); > break; > default: > /* We should not reach here because we only asked for > ERRORs and EOS */ > g_printerr ("Unexpected message received.\n"); > break; > } > } > } > } > > // clean up > gst_element_set_state (mySinkPipeline, GST_STATE_NULL); > gst_object_unref (GST_OBJECT (mySinkPipeline)); > //g_main_loop_unref (loop); > > return 0; > } > > > On Wed, Sep 28, 2016 at 10:38 AM, Doug Wood <<a href="/user/SendEmail.jtp?type=node&node=4680014&i=1" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote: >> Tim, >> >> Your alternative suggestion looks like it might nicely fit my needs. I >> am already supporting playback to a local window in conjunction with >> the udpSink just in 2 independent pipelines. I assume that if I want >> to modify my existing pipeline that plays to a local window to also >> support the intervideosink then I will have to tee the pipleline. >> >> I will give this coupling approach a try. >> >> Thanks a lot, >> Doug >> >> On Tue, Sep 27, 2016 at 5:37 PM, Tim Müller [via GStreamer-devel] >> <<a href="/user/SendEmail.jtp?type=node&node=4680014&i=2" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote: >>> On Tue, 2016-09-27 at 12:54 -0700, doubledw wrote: >>> >>> Hi, >>> >>> At first glance it looks like the encoder not handling seeks / flushing >>> properly. >>> >>> I have something else for you to try which might work better for you: >>> >>> Create two separate pipelines in the same application - one that >>> encodes/streams and one that decodes/seeks/etc. >>> >>> In the playback pipeline you use intervideosink as video sink, and in >>> the encoding pipeline you use intervideosrc as source element. >>> >>> The video data from the intervideosink will be sent to the >>> intervideosrc, but both are decoupled, so if you pause the playback >>> pipeline, the streaming pipeline will just keep repeating and streaming >>> the last frame (or go black after a while, depending what you set the >>> timeout to). If you seek on the playback pipeline the streaming part >>> will repeat the last frame until the seek is complete and then output >>> frames from the new position (but with monotonically increasing >>> timestamps, so the encoder will never know there was a discontinuity). >>> If you play back at half speed or double speed, the streaming part will >>> encode that at the playback speed and stream it out normally. >>> >>> For the decoding pipeline you can just use a playbin element and set >>> the "video-sink" property to an intervideosink (GstElement *). >>> >>> On the streaming pipeline you want something like: >>> >>> intervideosrc ! video/x-raw,framerate=25/1 ! videoconvert >>> ! avenc_mpeg2video ! mpegtsmux ! udpsink >>> >>> If you want audio as well, there's also interaudiosink/src which work >>> the same way. >>> >>> Good luck! >>> >>> Cheers >>> -Tim >>> >>> -- >>> Tim Müller, Centricular Ltd - <a href="http://www.centricular.com" target="_top" rel="nofollow" link="external">http://www.centricular.com</a> >>> >>> Join us at the GStreamer Conference! >>> 10-11 October 2016 in Berlin, >>> Germany >>> <a href="http://gstreamer.freedesktop.org/conference/" target="_top" rel="nofollow" link="external">http://gstreamer.freedesktop.org/conference/</a> >>> >>> _______________________________________________ >>> gstreamer-devel mailing list >>> [hidden email] >>> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_top" rel="nofollow" link="external">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> >>> >>> >>> ________________________________ >>> If you reply to this email, your message will be added to the discussion >>> below: >>> <a href="http://gstreamer-devel.966125.n4.nabble.com/Seeking-when-streaming-to-udpSink-tp4678702p4679823.html" target="_top" rel="nofollow" link="external">http://gstreamer-devel.966125.n4.nabble.com/Seeking-when-streaming-to-udpSink-tp4678702p4679823.html</a> >>> To unsubscribe from Seeking when streaming to udpSink, click here. >>> NAML >> >> >> >> -- >> Doug Wood | Principal Software Engineer >> VT MÄK | 150 Cambridge Park Drive, Third Floor, Cambridge, MA 02140 >> T: +1.407.359.2725 / +1.617.876.8085 >> <a href="/user/SendEmail.jtp?type=node&node=4680014&i=3" target="_top" rel="nofollow" link="external">[hidden email]</a> | www.mak.com > > > > -- > Doug Wood | Principal Software Engineer > VT MÄK | 150 Cambridge Park Drive, Third Floor, Cambridge, MA 02140 > T: +1.407.359.2725 / +1.617.876.8085 > <a href="/user/SendEmail.jtp?type=node&node=4680014&i=4" target="_top" rel="nofollow" link="external">[hidden email]</a> | www.mak.com </div> -- Doug Wood | Principal Software Engineer VT MÄK | 150 Cambridge Park Drive, Third Floor, Cambridge, MA 02140 T: +1.407.359.2725 / +1.617.876.8085 <a href="/user/SendEmail.jtp?type=node&node=4680014&i=5" target="_top" rel="nofollow" link="external">[hidden email]</a> | www.mak.com <hr align="left" width="300" /> View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Seeking-when-streaming-to-udpSink-tp4678702p4680014.html">Re: Seeking when streaming to udpSink</a> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.