<div dir="ltr"><div>Hi,</div><div> </div><div>As stated previously you should use the timeline auto transition[0] feature instead of creating them yourself, it is just simpler.</div><div> </div><div>- Thibault </div><div> </div><div>[0]: <a href="https://gstreamer.freedesktop.org/documentation/gst-editing-services/gestimeline.html?gi-language=c#overlaps-and-autotransitions">https://gstreamer.freedesktop.org/documentation/gst-editing-services/gestimeline.html?gi-language=c#overlaps-and-autotransitions</a></div></div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Sep 2, 2020 at 3:15 AM xmufzy <<a href="mailto:xmufzy@foxmail.com">xmufzy@foxmail.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Got it! I try to add a transition, but the program hunged, if I remove the transition codes , it worked. the code: //clip1[3:6] offset=3*GST_SECOND; inpoint=5*GST_SECOND; duration=3*GST_SECOND; priority=0; uri = gst_filename_to_uri ("./shoe.mp4", NULL); src = GES_CLIP(ges_uri_clip_new (uri)); g_assert (src); g_free (uri); g_object_set (src, "start",offset,"in-point", inpoint,"duration" , duration, "priority",priority,NULL); g_assert(ges_layer_add_clip (layer, src)); ges_timeline_element_set_child_properties (GES_TIMELINE_ELEMENT (src), "posx", 400, "posy", 400, "width",200,"height",200, NULL); // add a transition code here GESTransitionClip *tr ; if (!(tr = ges_transition_clip_new_for_nick ( "crossfade"))) g_error ("invalid transition type \n"); g_object_set (tr, "start", (guint64) 6*GST_SECOND, "duration", (guint64) 2*GST_SECOND, "in-point", (guint64) 0, NULL); g_assert(ges_layer_add_clip (layer, GES_CLIP (tr))); //clip2 [8:11] offset=8*GST_SECOND; inpoint=3*GST_SECOND; duration=3*GST_SECOND; priority=1; uri = gst_filename_to_uri ("./poc_backgroup.mp4", NULL); src = GES_CLIP(ges_uri_clip_new (uri)); g_assert (src); g_free (uri); g_object_set (src, "start",offset,"in-point", inpoint,"duration" , duration, "priority",priority,NULL); g_assert(ges_layer_add_clip (layer, src)); ges_timeline_element_set_child_properties (GES_TIMELINE_ELEMENT (src), "posx", 400, "posy", 400, "width",200,"height",200, NULL); 0:00:01.716036859 159716 0x7f2f8c0018a0 INFO basetransform gstbasetransform.c:1320:gst_base_transform_setcaps:<videoconvert11> reuse caps 0:00:01.716066550 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:847:gst_event_new_caps: creating caps event video/x-raw, format=(string)I420, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, framerate=(fraction)30/1 0:00:01.718626927 159716 0x7f2f8c0018a0 INFO basetransform gstbasetransform.c:1320:gst_base_transform_setcaps:<tr-csp-a> reuse caps 0:00:01.718656908 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:847:gst_event_new_caps: creating caps event video/x-raw, format=(string)I420, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, framerate=(fraction)30/1 0:00:01.723804049 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:847:gst_event_new_caps: creating caps event video/x-raw, format=(string)AYUV, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1 0:00:01.726013362 159716 0x7f2f8c0018a0 INFO basetransform gstbasetransform.c:1320:gst_base_transform_setcaps:<videoconvert6> reuse caps 0:00:01.726044911 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:847:gst_event_new_caps: creating caps event video/x-raw, format=(string)AYUV, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1 0:00:01.726103897 159716 0x6a2a30 INFO videoaggregator gstvideoaggregator.c:1115:gst_video_aggregator_pad_sink_setcaps:<gessmartmixer1-compositor:sink_0> Setting caps video/x-raw, format=(string)AYUV, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1 0:00:01.727332952 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:928:gst_event_new_segment: creating segment event time segment start=0:00:00.080000000, offset=0:00:00.000000000, stop=0:00:12.080000000, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.080000000, duration 99:99:99.999999999 0:00:01.727345201 159716 0x7f2f6c0048a0 INFO videodecoder gstvideodecoder.c:3307:gst_video_decoder_clip_and_push_buf:<avdec_h264-9> First buffer since flush took 0:00:00.065781628 to produce 0:00:01.727356884 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:928:gst_event_new_segment: creating segment event time segment start=0:00:00.080000000, offset=0:00:00.000000000, stop=0:00:12.080000000, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.080000000, duration 99:99:99.999999999 0:00:01.727364532 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:928:gst_event_new_segment: creating segment event time segment start=0:00:00.080000000, offset=0:00:00.000000000, stop=0:00:12.080000000, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.080000000, duration 99:99:99.999999999 0:00:01.727374230 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:928:gst_event_new_segment: creating segment event time segment start=0:00:00.080000000, offset=0:00:00.000000000, stop=0:00:12.080000000, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:06.000000000, base=0:00:00.000000000, position 0:00:00.080000000, duration 99:99:99.999999999 0:00:01.727380950 159716 0x7f2f8c0018a0 INFO GST_EVENT gstevent.c:928:gst_event_new_segment: creating segment event time segment start=0:00:00.080000000, offset=0:00:00.000000000, stop=0:00:12.080000000, rate=1.000000, applied_rate=1.000000, flags=0x00, time=0:00:00.000000000, base=0:00:00.000000000, position 0:00:00.080000000, duration 99:99:99.999999999 0:00:01.727457347 159716 0x7f2f6c0048a0 INFO basetransform gstbasetransform.c:1320:gst_base_transform_setcaps:<capsfilter16> reuse caps 0:00:01.736636413 159716 0x7f2f6c0048a0 INFO videodecoder gstvideodecoder.c:1415:gst_video_decoder_sink_event_default:<avdec_h264-9> upstream tags: taglist, video-codec=(string)H.264, bitrate=(uint)20847403, minimum-bitrate=(uint)785400, maximum-bitrate=(uint)30797000; Thibault Saunier-4 wrote > Hi, > > I see, and the rule is pretty straight forward, 2 clips can't fully > overlap > in a layer. > > - Thibault > > On Tue, Sep 1, 2020 at 10:39 PM xmufzy < > xmufzy@ > > wrote: > >> Well, the problem is I failed to add a new clip to the layer, So I need >> to >> follow the overlap rule >> >> >> 0:00:00.082988805 31704 0x622200 INFO GST_ELEMENT_PADS >> gstelement.c:752:gst_element_add_pad: > <videosrcbin> > adding pad 'src' >> 0:00:00.082991746 31704 0x622200 INFO GST_ELEMENT_PADS >> gstelement.c:999:gst_element_get_static_pad: found pad queue1:sink >> 0:00:00.083017675 31704 0x622200 INFO GST_PADS >> gstpad.c:4309:gst_pad_peer_query: > <queue1:sink> > pad has no peer >> 0:00:00.083715742 31704 0x622200 INFO GST_PADS >> gstpad.c:2378:gst_pad_link_prepare: trying to link videosrcbin:src and >> src:proxypad19 >> 0:00:00.083722877 31704 0x622200 INFO GST_PADS >> gstpad.c:2586:gst_pad_link_full: linked videosrcbin:src and >> src:proxypad19, >> successful >> 0:00:00.083725022 31704 0x622200 INFO GST_EVENT >> gstevent.c:1610:gst_event_new_reconfigure: creating reconfigure event >> 0:00:00.083728769 31704 0x622200 INFO GST_EVENT >> gstpad.c:5891:gst_pad_send_event_unchecked: > <track-element-capsfilter:src> >> Received event on flushing pad. >> Discarding >> 0:00:00.083787272 31704 0x622200 INFO nlecomposition >> nlecomposition.c:884:_add_action_locked: > <video_nlecomposition1> > Adding >> Action for function: 0x8d92c0:_add_object_func >> 0:00:00.083802242 31704 0x622200 INFO gestree >> ges-timeline-tree.c:1007:set_edit_move_values:<GESVideoUriSource@0x8c2390> >> videourisource1 will move by setting start to 0:00:02.000000000 >> 0:00:00.083808188 31704 0x622200 INFO gestree >> >> ges-timeline-tree.c:1236:set_edit_trim_end_values:<GESVideoUriSource@0x8c2390 > > > >> videourisource1 will trim end by setting duration to 0:00:09.000000000 >> 0:00:00.083820383 31704 0x622200 INFO gestree >> ges-timeline-tree.c:753:check_overlap_with_element: videourisource1 >> (under >> uriclip1) [0:00:02.000000000 - >> 0:00:11.000000000] (layer: 0) (track : > <gesvideotrack0> > ) and videourisource0 >> (under uriclip0) [0:00:00.000000000 - 0:00:12.000000000] (layer: 0) >> (track >> : > <gesvideotrack0> > ) fully overlap >> 0:00:00.083834717 31704 0x622200 INFO ges >> ges-track.c:1218:ges_track_add_element_full: > <gesvideotrack0> > Could not add >> the track element videourisource1<0x8c2390> [ 0:00:02.000000000 >> (0:00:03.000000000) - 0:00:09.000000000(0:00:12.000000000) layer: 0] to >> the >> track because it breaks the timeline configuration rules >> 0:00:00.083847483 31704 0x622200 INFO nlecomposition >> nlecomposition.c:884:_add_action_locked: > <video_nlecomposition1> > Adding >> Action for function: 0x8d8080:_remove_object_func >> 0:00:00.083857936 31704 0x622200 INFO ges >> ges-clip.c:4491:ges_clip_add_child_to_track:<GESUriClip@0x8c05a0> >> Could >> not >> add the track element videourisource1<0x8c2390> [ 0:00:02.000000000 >> (0:00:03.000000000) - 0:00:09.000000000(0:00:12.000000000) layer: 0] to >> the >> track > <gesvideotrack0> >> 0:00:00.083877078 31704 0x622200 INFO ges >> ges-layer.c:779:ges_layer_add_clip_full:<GESLayer@0x8856e0> Could >> not add >> the clip uriclip1<0x8c05a0> [ 0:00:02.000000000 (0:00:03.000000000) - >> 0:00:09.000000000(0:00:12.000000000) layer: 0] to the timeline >> > <gestimeline0> >> 0:00:00.083886577 31704 0x622200 WARN ges >> ges-layer.c:787:ges_layer_add_clip_full: > <gestimeline0> > Adding the clip >> uriclip1<0x8c05a0> [ 0:00:02.000000000 (0:00:03.000000000) - >> 0:00:09.000000000(0:00:12.000000000) layer: 0] to the timeline failed: >> The >> source "videourisource0" (parent: "uriclip0") would totally overlap the >> source "videourisource1" (parent: "uriclip1") in the track >> "gesvideotrack0" >> ** >> ERROR:./poc_ges.cpp:108:int main(int, gchar**): assertion failed: >> (ges_layer_add_clip (layer, src)) >> Bail out! ERROR:./poc_ges.cpp:108:int main(int, gchar**): assertion >> failed: >> (ges_layer_add_clip (layer, src)) >> >> >> >> >> -- >> Sent from: <a href="http://gstreamer-devel.966125.n4.nabble.com/" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/</a> >> _______________________________________________ >> gstreamer-devel mailing list >> > gstreamer-devel@.freedesktop >> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> >> > > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@.freedesktop > <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> -- Sent from: <a href="http://gstreamer-devel.966125.n4.nabble.com/" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>