So I’ve finally been able to get the output I want using hardware acceleration. I’m trying to output the overlay result to a file (and eventually RTMP). But I’m getting stuck… This works to display on the display: gst-launch-1.0 \ v4l2src io-mode=2 device=/dev/video0 ! "image/jpeg,width=1920,heigh…

Hi, Please replace with attached prebuilt lib and set background-w, background-h: ... ! nvcompositor background-w=2560 background-h=1440 ... ! ... We have tried with two E-Con CU135 and it works fine. Please give it a try. r32_43_TEST_libgstnvcompositor.zip (12.2 KB)

Hi, We have verified it working and provided it in [image] openCV video writer to gstreamer appsrc Jetson Nano Hi, It only supports RGBA in source pad of nvcompositor, so you need to run like …! nvcompositor ! nvvidconv ! nvv4l2h264enc ! … Another reference of using nv…

Edit: Sorry, I deleted my post from earlier today because I realized I didn’t reply to you. Running this: gst-launch-1.0 \ v4l2src num-buffers=100 io-mode=2 device=/dev/video0 ! "image/jpeg,width=1920,height=1080, framerate=30/1" ! nvjpegdec ! video/x-raw ! nvvidconv ! 'video/x-raw(memory:NVMM),fo…

Hi, It looks wrong to set sink_2 in nvcompositor. You have one source to sink_0 and the other to sink_1. Should set sink_0 instead of sink_2. And you may try to put the two source side-by-side.

Good catch. Surprised no error was thrown for something like that. Still didn’t solve the problem however. Hangs in the same place as shown below: gst-launch-1.0 \ > v4l2src io-mode=2 device=/dev/video0 ! "image/jpeg,width=1920,height=1080, framerate=30/1" ! nvjpegdec ! video/x-raw ! nvvidconv ! 'v…

Hi, Without setting num-buffers, the pipeline will keep running and never stops. For generating a valid mp4, you would need to set the property. If you would like ot exit by pressing Ctrl+C, suggest you use matroskamux to generate mkv file.

Perhaps I’m not sufficiently explaining what I mean by hanging. If I run the command with nvoverlaysink, the output stops at Redistribute latency...and I get the display shown properly. As soon as I try to write it a file, it gets “stuck” at “NvMMLiteBlockCreate : Block : BlockType = 4”. Whether I …

Hi, We try with videotestsrc and the mp4 looks OK. Please try gst-launch-1.0 \ videotestsrc is-live=1 num-buffers=100 ! 'video/x-raw,width=1920,height=1080,framerate=30/1' ! nvvidconv ! 'video/x-raw(memory:NVMM),format=RGBA' ! comp.sink_0 \ videotestsrc is-live=1 num-buffers=100 pattern=1 ! 'vide…

The command you provided works. The command I run with nvoverlaysink with my cameras also works. What do you think the issue is with the source that makes a difference between nvoverlaysink vs. filesink? I’m doing all the right conversions I believe and am unsure why nvoverlaysink works but not f…

My cameras are MJPEG. The reason I purchased the jetson was because, compared to the Pi, I would have figured that the GPU would make MJPEG decoding/h264 encoding process much less CPU intensive. Because cost is a concern, being able to deploy cameras that are MJPEG ( 3-4x cheaper for desired frame …

Gstreamer using nvcomposer to filesink hangs, but nvcomposer to nvoverlaysink works fine

Robotics & Edge Computing Jetson Systems Jetson Nano

DaneLLL October 8, 2020, 6:07am 15

Hi,
Do the sources support MJPEG only or other YUV422(such as YUYV or UYVY) formats? In general, USB cameras support certain YUV422 format. If there is other format, it may worth a try.

Please refer to Jetson Nano FAQ:
Q: I have a USB camera. How can I lauch it on Jetson Nano?

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Gstreamer using nvcomposer to filesink hangs, but nvcomposer to nvoverlaysink works fine

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