Jetson Nano FAQ

Q: I have a 256GB sd card, but it only shows 14 GB after bootup. Any idea?
A: Please use Etcher tool to re-size SD card image:

  1. Download balenaEtcher - Flash OS images to SD cards & USB drives
  2. Execute Etcher tool and select “sd-blob.img” image → select SDcard → Flash
  3. After completed flash, plug-in SD Card to boot up Jetson-Nano
  4. Using SDK manager to install JetPack components

Q: How to install old version JetPack from SDK Manager?
A: Run below commands:

$ sdkmanager --archivedversions

Q: When I try to Install SDK components, the SDK Manager says “Could not detect Nvidia Jeson device connected to USB”. Does anyone also hit the issue?
A: You can switch to use eth0 ip address to install SDK components:

Run the "sdkmanager" -> choose your "target device" and "install version" -> unselect Flash OS and select install "SDK components" -> Press enter to enter your eth0 ip address(of Jetson Nano), username and password to start install sdk components.

Q: Is hardware acceleration enabled in ffmpeg?
A: We have enabled hardware decoding. Please check development guide. Enabling hardware encoding is underway.
You may also check the community contribution GitHub - jocover/jetson-ffmpeg: ffmpeg support on jetson nano

Also for leveraging hardware acceleration on Jetson Nano, please check jetson_multimedia_api or gstreamer

Q: I have a USB camera. How can I launch it on Jetson Nano?
A: You can get supported modes via v4l2-ctl:

$ sudo apt install v4l-utils
$ v4l2-ctl -d /dev/video1 --list-formats-ext
        Index       : 0
        Type        : Video Capture
        Pixel Format: 'YUYV'
        Name        : YUYV 4:2:2
                Size: Discrete 640x480
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.042s (24.000 fps)
                        Interval: Discrete 0.050s (20.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
                        Interval: Discrete 0.100s (10.000 fps)
                        Interval: Discrete 0.133s (7.500 fps)
                        Interval: Discrete 0.200s (5.000 fps)

And launch one mode(Ex: 640x480p30) in gstreamer command:

$ gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,format=YUY2,width=640,height=480,framerate=30/1 ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! nvoverlaysink

From r32.4.3(Jetpack4.4), we have new plugin nvv4l2camerasrc, you can leverage it to achieve zero copy:

$ gst-launch-1.0 nvv4l2camerasrc device=/dev/video1 ! video/x-raw(memory:NVMM),format=UYVY,width=640,height=480,framerate=30/1 ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! nvoverlaysink

By default it supports UYVY. If your source supports other format such as YUYV(YUY2) or YVYU. You can download the source code, add the format and rebuild/replace the plugin. The source code is in

Besides, you can run nvgstcapture-1.0 app, please check
Taking Your First Picture with CSI or USB Camera | NVIDIA Developer

Q: Is there any example of running RTSP streaming?
A: There is an ease-to-use gstreamer sample to run RTSP server. The steps:

  1. Download test-launch.c
    gst-rtsp-server/test-launch.c at 1.14.5 · GStreamer/gst-rtsp-server · GitHub

  2. Build the sample

sudo apt-get install libgstrtspserver-1.0 libgstreamer1.0-dev
gcc test-launch.c -o test-launch $(pkg-config --cflags --libs gstreamer-1.0 gstreamer-rtsp-server-1.0)
  1. Launch the server
$ ./test-launch "videotestsrc ! nvvidconv ! nvv4l2h264enc ! h264parse ! rtph264pay name=pay0 pt=96"

At client side, if the device is a PC with Windows OS, you can open network stream rtsp://<SERVER_IP_ADDRESS>:8554/test via VLC. If it is a Jetson device, you can run the command:

$ gst-launch-1.0 uridecodebin uri=rtsp://<SERVER_IP_ADDRESS>:8554/test ! nvoverlaysink

Q: I hit an issue and need to have a solution. Could you help?
A: We have quick solutions for some known issues. Please check

Q: I don’t have a monitor. How can I configure the user account/pwd?
A: Please refer to the oem-config section in l4t deveoper guide

Q: How to configure the pinmux function of jetson Nano?
A: Please refer developer guide, Pinmux changes to customize the pinmux spreadsheet.
Or, you may refer to Configuring the 40-Pin Expansion Header to enable Jetson‑IO python tools to have configuration.

Q: How to debug if my nano is not booting up?
A: Please refer to below link and dump the boot up log with us.->link

Q: Are there any scripts to automatically build kernel/bootloader?
A: Yes, we put some tools on this github->link

Q: Can we run the micro USB port on devkit in host mode?
A: No, it works in device mode only. You can design a custom board to enable host mode. Here is a reference post.

Q: What if I see tearing when running dual display cases?
A: Please refer to this post and add the property to the

Q:How to boot root file system from external storage?
A: Please refer to this

Q:How to enable automatic login on Nano-2GB?
A: Please refer to this page link

Q: My Jetson Nano is with sd card slot. Can I use it to verify secureboot?
A: No. Secureboot is only supported on production module(Jetson Nano with emmc).

Q: Got “too many resources requested for launch” with a CUDA app.
A: Please refer to this page link.

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Using fully-accelerated hardware-based video decoding and encoding with FFMPEG on Jetson Nano
USB web cam is too slow and can't resize
How to convert YUYV to H.264 and record?
Ffmpeg L4T re 32.4.2
Help. Error: could not read image from camera and could not initialize USB camera
Problem with USB 3.0 camera
Taking display from Jetson Nano to laptop using WiFi
TX2i : Modify rootfs to create new user during flashing
Stream the multiple camera output into remote server
UYVY Format cameras for Jetson with Deepstream 5.0 python bindings
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Supporting two video modes
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RTSP Client Request Format
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Gstreamer pipeline stop when idle and back playing when connect
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RTSP Server unable to launch the stream
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Sending two simultaneous video stream over WiFi
Stream RTSP from h264 /dev/video src
Help with connecting Ip camera to jetson nano and to Azure IoT Edge
Inconsistent fps while recording with ffmpeg
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V4L2 reference driver source code
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Self-reboot when using Gstreamer pull video stream with rtmp