I am debugging framerate issues the team and I recently noticed in our application. Part of the issue is that the reported framerate does not match in different places and the actual number of frames does not correspond with either of them. Our application uses a high speed Alvium CSI-2 camera attac…

Hi, We try to simulate 1408x1088p154 frame data with videotestsrc but cannot achieve 154 fps: $ gst-launch-1.0 videotestsrc is-live=1 num-buffers=1500 ! video/x-raw,format=GRAY8,framerate=154/1,width=1408,height=1088 ! nvvidconv ! 'video/x-raw(memory:NVMM),format=I420' ! fpsdisplaysink text-overla…

Hi, We would suggest break down the pipeline to confirm which plugin does not achieve target frame rate. Can check the source frame rate first: gst-launch-1.0 v4l2src ! 'video/x-raw, format=(string)GRAY8' ! fpsdisplaysink text-overlay=0 video-sink=fakesink --verbose

[image] DaneLLL: gst-launch-1.0 v4l2src ! 'video/x-raw, format=(string)GRAY8' ! fpsdisplaysink text-overlay=0 video-sink=fakesink --verbose This pipe results in a stable 153.03 fps which is as desired. Edit: I can also confirm the following pipes to be working: gst-launch-1.0 v4l2src ! 'vid…

Hi @DaneLLL forgive me but I don’t see how that suggestion is relevant here. All the pipes in my previous post are already without a muxer in them. So the rate is reported is not double, just lower than what the camera outputs.

Hi, Looks like the performance is capped by CPU capability of Jetson Nano. Please execute sudo tegrastats and check if CPU cores are at full loading.

Using the below pipe I get ~135fps as before. I included a couple of lines from sudo tegrastats. gst-launch-1.0 v4l2src ! 'video/x-raw, format=(string)GRAY8' ! nvvidconv ! 'video/x-raw(memory:NVMM)' ! nvv4l2vp8enc ! fpsdisplaysink text-overlay=0 video-sink=fakesink --verbose RAM 1488/3963MB (lfb 3…

Requesting the available formats from the camera give me (among others but I need this one for the highest framerate) this result. None of the other formats mention Bayer either. v4l2-ctl -d /dev/video0 --list-formats-ext ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel …

Hi, Your gstreamer command looks optimal and there may not be room for improvement. Is it possible to set up the camera and run in lower frame rate such as 120fps? Jetson Nano may not be able to support 1408x1088p154. The camera should not be a Bayer sensor, so it cannot use nvarguscamerasrc. You …

I seems you are right about the buffer throughput being the issue. Lower framerates indeed work without issue, as well as cropping the image (on the sensor itself). Thank you for your help, at least I now know what the issue is.

What is limiting the camera framerate (gstreamer)

Robotics & Edge Computing Jetson Systems Jetson Nano

DaneLLL December 2, 2021, 3:15am 5

Hi,
Please check this suggestion:
Gstreamer fpsdisplaysink reports double framerate - #6 by DaneLLL

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What is limiting the camera framerate (gstreamer)

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