Hi, I’ve put together a gstreamer pipeline that simultaneously composites multiple videos to an RTSP stream with nvcompositor and saves each stream independently to a file. This seems to work ~25% of the time, and other times causes a segfault with no error messages.
Anyone have any idea why I might be getting segfaults randomly, and how to potentially resolve (or debug) this issue?
Pipeline:
gst-rtsp-launch --port=8554 "( \
nvv4l2camerasrc device=/dev/video0 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video0 \
video0. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_0 \
video0. ! queue ! absolutetimestamps location=sensor0.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor0.mp4 \
nvv4l2camerasrc device=/dev/video1 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video1 \
video1. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_1 \
video1. ! queue ! absolutetimestamps location=sensor1.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor1.mp4 \
nvv4l2camerasrc device=/dev/video2 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video2 \
video2. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_2 \
video2. ! queue ! absolutetimestamps location=sensor2.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor2.mp4 \
nvv4l2camerasrc device=/dev/video3 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video3 \
video3. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_3 \
video3. ! queue ! absolutetimestamps location=sensor3.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor3.mp4 \
nvv4l2camerasrc device=/dev/video4 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video4 \
video4. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_4 \
video4. ! queue ! absolutetimestamps location=sensor4.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor4.mp4 \
nvv4l2camerasrc device=/dev/video5 ! video/x-raw(memory:NVMM), format=(string)UYVY, width=(int)3840, height=(int)2160 ! tee name=video5 \
video5. ! queue ! nvvidconv ! video/x-raw(memory:NVMM),format=(string)RGBA ! comp.sink_5 \
video5. ! queue ! absolutetimestamps location=sensor4.log ! nvvidconv ! video/x-raw(memory:NVMM), format=(string)I420 ! nvv4l2h265enc bitrate=8000000 ! h265parse ! mp4mux ! perf ! filesink sync=true location=sensor5.mp4 \
nvcompositor name=comp \
sink_0::xpos=0 sink_0::ypos=0 sink_0::width=1280 sink_0::height=720 \
sink_1::xpos=1280 sink_1::ypos=0 sink_1::width=1280 sink_1::height=720 \
sink_2::xpos=2560 sink_2::ypos=0 sink_2::width=1280 sink_2::height=720 \
sink_3::xpos=0 sink_3::ypos=720 sink_3::width=1280 sink_3::height=720 \
sink_4::xpos=1280 sink_4::ypos=720 sink_4::width=1280 sink_4::height=720 \
sink_5::xpos=2560 sink_5::ypos=720 sink_5::width=1280 sink_5::height=720 \
! video/x-raw(memory:NVMM),format=RGBA,width=(int)3840,height=(int)1440 ! nvvidconv ! video/x-raw(memory:NVMM), format=NV12 ! nvv4l2h265enc insert-sps-pps=1 idrinterval=15 insert-vui=1 ! h265parse ! rtph265pay name=pay0 )"
Nothing seems too out of the ordinary in jtop, with memory well under control:
