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ethaniel/gstreamer_rtsp_to_shm.md

Last active March 1, 2024 00:49
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Split one RTSP stream into multiple gstreamer pipelines
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gstreamer_rtsp_to_shm.md
  1. Get RTSP video, decode it, apply framerate and send to shared buffer. Don't forget to set shm-size to something high, because you're now dealing with decoded raw video:

gst-launch-1.0 -v rtspsrc location="rtsp://192.168.86.249/live/sala" protocols=tcp latency=1000 ! watchdog timeout=10000 ! rtph264depay ! h264parse ! avdec_h264 ! videorate ! video/x-raw,framerate=30/1 ! shmsink wait-for-connection=false socket-path=/tmp/foo shm-size=100000000

  1. Note the caps in the output:

/GstPipeline:pipeline0/GstShmSink:shmsink0.GstPad:sink: caps = video/x-raw, format=(string)I420, width=(int)2560, height=(int)1440, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, colorimetry=(string)1:0:0:0, framerate=(fraction)30/1

  1. Read decoded video from shared buffer (input the width,height,format,framerate caps from above):

gst-launch-1.0 shmsrc do-timestamp=true is-live=true socket-path=/tmp/foo ! video/x-raw,width=2560,height=1440,format=I420,framerate=30/1 ! autovideosink

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