Gst-launch-1.0出图异常为绿色

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
22

设备树已经修改，但是出图依然为绿色。
dts.tar.gz (40 KB)

gst-launch-1.0 v4l2src device=/dev/video7 ! 'video/x-raw, format=UYVY, width=1920, height=1080, framerate=30/1' ! xvimagesink

如果是格式YUY2会报错，但是改成UYVY就不会报错，但是依然为绿色

gst-launch-1.0 v4l2src device=/dev/video7 ! 'video/x-raw, format=YUY2, width=1920, height=1080, framerate=30/1' ! xvimagesink

$ v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

        [0]: 'UYVY' (UYVY 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [1]: 'NV16' (Y/CbCr 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [2]: 'UYVY' (UYVY 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
ubuntu@ubuntu-desktop:~$ v4l2-ctl --list-formats-ext -d /dev/video7
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

        [0]: 'UYVY' (UYVY 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [1]: 'NV16' (Y/CbCr 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [2]: 'UYVY' (UYVY 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
23

hello sorry.shao,

according to post #9,
your sensor’s actual output format should be YUYV per 3rdparty viewer configuration.

sensor capability shows with incorrect format types.
please update pixel_phase property to match your hardware settings.

24

那如果我的摄像头是YUYV这个格式，dts需要怎么配置呢，配置成"yuyv"吗

25

hello sorry.shao,

please give it a try with below DT configuration.

dynamic_pixel_bit_depth = "16";
csi_pixel_bit_depth = "16";
mode_type = "yuv";
pixel_phase = "yuyv";
26

设备树改成如上，出图依然为绿色的

Screenshot from 2026-09-02 20-30-08
Screenshot from 2026-09-02 20-30-081920×1080 411 KB

gst-launch-1.0 v4l2src device=/dev/video7 ! 'video/x-raw, format=YUY2, width=1920, height=1080, framerate=30/1' ! xvimagesink



 v4l2-ctl --list-formats-ext -d /dev/video7
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

        [0]: 'YUYV' (YUYV 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [1]: 'YUYV' (YUYV 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
ubuntu@ubuntu-desktop:~$ v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

        [0]: 'YUYV' (YUYV 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
        [1]: 'YUYV' (YUYV 4:2:2)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)

我发现我们从jp5，jp6到jp7全都有这个问题

找摄像头厂家也确认是yuyv格式的

27

hello sorry.shao,

it may still caused by actual byte order differs from advertised fourcc.
it’s pixel_phase determines the packed ordering, the driver side maps them to different fourccs.
see-also.. $public_sources/kernel-src/nvidia-oot/drivers/media/platform/tegra/camera/sensor_common.c

on the other hand, you may give it a try by forcing software RGB conversion.
for instance,
$ gst-launch-1.0 -v v4l2src device=/dev/video7 ! video/x-raw,format=YUY2,width=1920,height=1080,framerate=30/1 ! videoconvert ! video/x-raw,format=BGRx ! ximagesink sync=false

28

用这个命令还是绿的

Screenshot from 2026-09-03 13-56-10
Screenshot from 2026-09-03 13-56-101920×1080 588 KB

public_sources/kernel-src/nvidia-oot/drivers/media/platform/tegra/camera/sensor_common.c这个代码我看yuv_yuyv16已经加进去了，这个有没有什么debug方法或者文档，我们试着去改一下呢

29

hello sorry.shao,

is it serializer/deserializer output configuration differs between links?
please double check with sensor vendor for confirmation.