Hi guys,
when I use these commads, they work corectly:
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! queue ! h264parse ! nvv4l2decoder ! nvvidconv ! ‘video/x-raw(memory:NVMM), format=(string)BGRx’ ! fakesink -e
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! queue ! h264parse ! nvv4l2decoder ! nvvidconv ! ‘video/x-raw, format=(string)BGRx’ ! fakesink -e
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! queue ! h264parse ! omxh264dec ! nvvidconv ! ‘video/x-raw(memory:NVMM), format=(string)BGRx’ ! fakesink -e
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! queue ! h264parse ! omxh264dec ! nvvidconv ! ‘video/x-raw, format=(string)BGRx’ ! fakesink -e
and when I use gstream + opencv, such the below, It work correctly:
gst_str = ('rtspsrc location={rtsp} latency=300 ! ’
but I want to use video/x-raw(memory:NVMM) instead of video/x-raw , I get this error, How do i solve this problem?
g_mutex_clear() called on uninitialised or locked mutex │00C GPU@38C AO@44C thermal@39.5C POM_5V_IN 3176/2117 POM_5V_GPU 167
Hi,
Hi,
No, tegra_multimedia_api is not supported in python.
The CPU usage is explained. If you have to use appink in OpenCV, please realize it.
Hi guys,
I want to do pipeline multi-stream decoder on jetson nano using H264 hardware decoder.
when I run directly this function:
def stream_rtsp(uri, width, height, latency):
gst_str = ('rtspsrc location={} latency={} ! ’
'rtph264depay ! h264parse ! omxh264dec ! ’
'nvvidconv ! ’
'video/x-raw, width=(int){}, height=(int){}, ’
'format=(string)BGRx ! videoconvert ! ’
‘appsink’).format(uri, latency, width, height)
then I check to use NVDEC ro not with sudo tegrastats, I see NVDEC is ac…
Opencv videoCapture only read frames in CPU memory.
For your case you would try nvivafilter. (Here is an example for fisheye undistort, you would adapt for your case)
Please not duplicate same question into multiple posts.
Because gstreamer corecctly use GPU buffer in the command terminal, I think it’s possible to use pipe in opencv with subprocess library, right?
Hi,
No, it is not possible. Please check the source file:
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show original
It supports video/x-raw only. video/x-raw(memory:NVMM) is not handled in the 3rdparty code.
Thanks,
Hi,
You can launch a gstreamer pipeline in python. Here is a simple code for reference:
Hi,
this simple code snippet crashes with a Segmentation fault (tested on JetPack 4.3):
https://paste.gnome.org/pw1vudabr
a quick fix would be highly appreciated.
Stacktrace:
#0 0x0000007fb6f233f4 in find_notify (object=0x7fa8ff850e, object=0x7fa8ff850e, data=0x0, notify=0x0, match_notify=0, quark=2577) at gstminiobject.c:369
#1 0x0000007fb6f233f4 in gst_mini_object_set_qdata (object=0x7fa8ff850e, quark=2577, data=0x0, destroy=0x0) at gstminiobject.c:672
#2 0x0000007fb7853948 in () at /…