pipeline gstreamer pour un rtsp flux h264

Je suis nouveau sur gstreamer et ne peut pas comprendre comment créer un pipeline pour l'exemple suivant. Je veux décoder le h264 flux à partir d'une caméra réseau.

gst-launch rtspsrc location=rtsp://172.16.112.124/axis-media/media.amp  latency=0 ! decodebin ! autovideosink -vvv

Ce joue bien, mais j'ai besoin d'une auto construite pipline. Merci pour l'aide!

Setting pipeline to PAUSED ...
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:rtpbin0: latency = 0
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:rtpbin0: buffer-mode = slave (1)
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 5000000
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: buffer-size = 0
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: timeout = 0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2308308883_96: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0.GstGhostPad:recv_rtp_src_0_2308308883_96.GstProxyPad:proxypad6: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstRtpBin:rtpbin0.GstGhostPad:recv_rtp_src_0_2308308883_96.GstProxyPad:proxypad5: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = video/x-h264
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstRtpH264Depay:rtph264depay0.GstPad:sink: caps = application/x-rtp, media=(string)video, payload=(int)96, clock-rate=(int)90000, encoding-name=(string)H264, packetization-mode=(string)1, profile-level-id=(string)420029, sprop-parameter-sets=(string)\"Z0IAKeNQKD9gLcBAQGkHiRFQ\\,aM48gA\\=\\=\", a-framerate=(string)30.0, a-transform=(string)\"1\\,0\\,0\\;0\\,1\\,0\\;0\\,0\\,1\", clock-base=(uint)1627931333, seqnum-base=(uint)55492, npt-start=(guint64)0, play-speed=(double)1, play-scale=(double)1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_h264:ffdec_h2640.GstPad:sink: caps = video/x-h264
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/ffdec_h264:ffdec_h2640.GstPad:src: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo.GstPad:sink: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0.GstProxyPad:proxypad7: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0.GstGhostPad:sink.GstProxyPad:proxypad1: caps = video/x-raw-yuv, width=(int)320, height=(int)240, framerate=(fraction)25/1, format=(fourcc)I420, interlaced=(boolean)false, pixel-aspect-ratio=(fraction)1/1
WARNING: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo: A lot of buffers are being dropped.
Additional debug info:
InformationsquelleAutor pixelart | 2013-12-17
  1. 2

    Vous pouvez trouver le pipeline créé par decodebin et puis le créer manuellement.

    De gstreamer documentation du kit de développement - tutoriel de base 11

    GStreamer a la capacité de sortie graphique des fichiers. Ces sont .dot fichiers lisibles avec des programmes gratuits comme GraphViz, qui décrivent la topologie de votre pipeline, avec les bouchons négocié dans chaque lien.

    À obtenir .dot fichiers, il suffit de définir la GST_DEBUG_DUMP_DOT_DIR variable d'environnement pour pointer vers le dossier où vous souhaitez que les fichiers soient placés. tps-lancement de la créer un .dot fichier à chaque changement d'état, de sorte que vous pouvez voir l'évolution de la caps de négociation.

    InformationsquelleAutor rubndsouza