<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">Yes, interpipes should allow you to renegotiate the caps if you set the “allow-renegotiation=true”. Let me test this on my side and get back to you. Meanwhile, as a workaround, can you try leaving the framerate out of the interpipesrc caps?</div><div class=""><br class=""></div><div class="">Do you have more that one interpipesrc listening to the interpipesink?</div><div class=""><br class=""></div><div class="">Michael</div><div class=""><br class=""></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 18, 2020, at 18:05, Frederic Turmel <<a href="mailto:fturmel@netflix.com" class="">fturmel@netflix.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Question for interpipe expert. Should interpipe be able to deal with incoming stream change?<br class=""><div class=""><br class=""></div><div class="">If I really specify the entire caps it works but when I leave the caps more open on the receiving end It never picks up the right match and it just stop.</div><div class=""><br class=""></div><div class="">Example logs below:</div><div class=""><br class=""></div><div class="">0:00:03.460903000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:492:gst_inter_pipe_sink_set_caps:<webrtc_video_src> Incoming Caps: video/x-raw, width=(int)1920, height=(int)1080, framerate=(fraction)1/1, format=(string)YUY2<br class="">0:00:03.460912000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:494:gst_inter_pipe_sink_set_caps:<webrtc_video_src> Negotiated Caps: video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2, framerate=(fraction)1/1<br class="">0:00:03.460921000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:513:gst_inter_pipe_sink_set_caps:<webrtc_video_src> Listeners caps updated<br class="">0:00:03.461096000 1910 0x5564ee97d370 DEBUG advvideosrc gstadvvideosrc.cpp:838:gst_adv_video_src_start:<advvideosrc> start<br class="">0:00:03.641902000 1910 0x5564ee97d370 DEBUG advvideosrc gstadvvideosrc.cpp:858:gst_adv_video_src_start:<advvideosrc> Capture is already started. No need to start<br class="">0:00:03.641918000 1910 0x5564ee97d370 INFO advvideosrc gstadvvideosrc.cpp:860:gst_adv_video_src_start: Successfully started capture<br class="">0:00:03.641942000 1910 0x5564ee97d370 INFO advvideosrc gstadvvideosrc.cpp:889:gst_adv_video_src_start: Updating Caps to: video/x-raw, width=(int)1920, height=(int)1080, framerate=(fraction)60000/1001, format=(string)YUY2<br class="">0:00:03.642030000 1910 0x5564ee97d370 INFO advvideosrc gstadvvideosrc.cpp:898:gst_adv_video_src_start: gst_adv_video_src_start Exit!<br class="">0:00:03.645274000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:390:gst_inter_pipe_sink_intersect_listener_caps:<webrtc_video_src> Listener intervideosrc caps: video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2, framerate=(fraction)[ 0/1, 2147483647/1 ]<br class="">0:00:03.645299000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:444:gst_inter_pipe_sink_get_caps:<webrtc_video_src> Caps negotiated: EMPTY<br class="">0:00:03.645306000 1910 0x5564ee97d450 ERROR interpipesink gstinterpipesink.c:448:gst_inter_pipe_sink_get_caps:<webrtc_video_src> Failed to obtain an intersection between upstream elements and listeners<br class="">0:00:03.645314000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:856:gst_inter_pipe_sink_remove_listener:<webrtc_video_src> Removing listener intervideosrc<br class="">0:00:03.647752000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:420:gst_inter_pipe_sink_get_caps:<webrtc_video_src> No listeners yet, accepting any caps<br class="">0:00:03.648435000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:420:gst_inter_pipe_sink_get_caps:<webrtc_video_src> No listeners yet, accepting any caps<br class="">0:00:03.649131000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:420:gst_inter_pipe_sink_get_caps:<webrtc_video_src> No listeners yet, accepting any caps<br class="">0:00:03.649153000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:420:gst_inter_pipe_sink_get_caps:<webrtc_video_src> No listeners yet, accepting any caps<br class="">0:00:03.649167000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:492:gst_inter_pipe_sink_set_caps:<webrtc_video_src> Incoming Caps: video/x-raw, width=(int)1920, height=(int)1080, framerate=(fraction)60000/1001, format=(string)YUY2<br class="">0:00:03.649173000 1910 0x5564ee97d450 INFO interpipesink gstinterpipesink.c:494:gst_inter_pipe_sink_set_caps:<webrtc_video_src> Negotiated Caps: (NULL)<br class=""></div><div class=""><br class=""></div><div class="">The receiving side has this pipeline for a webrtc application. toggling allow-renegotiation does not really help. </div><div class="">interpipesrc name=intervideosrc stream-sync=1 listen-to=webrtc_video_src allow-renegotiation=1 format=3 ! video/x-raw,width=1920,height=1080,format=YUY2 ! queue leaky=1 ! videorate max-rate=30 average-period=2 ! videoscale ! video/x-raw,width=1280,height=720 ! queue ! videoconvert ! video/x-raw,format=I420 ! queue ! x264enc bitrate=1200 speed-preset=veryfast tune=zerolatency key-int-max=60 ! rtph264pay pt=96 ssrc=2 ! application/x-rtp,media=video,encoding-name=H264,payload=96<br class=""></div><div class=""><br class=""></div><div class="">With the issue above it will work if specify I fully the receiving end like below:</div><div class="">interpipesrc name=intervideosrc stream-sync=1 listen-to=webrtc_video_src allow-renegotiation=1 format=3 ! video/x-raw,width=1920,height=1080,format=YUY2,<b class="">framerate=60000/1001</b> !<br class=""></div><div class=""><br class=""></div><div class="">Is this the expected behavior? My source framerate can change so interpipe may not work if everything has to be defined in a static way.</div><div class=""><br class=""></div><div class="">Thanks</div><div class="">FredT</div><div class=""><br class=""></div></div> </div></blockquote></div><br class=""></div></body></html>