@leibnitz
是的，qv4l2拿到图像，进行转码，搬移，预览，做了很多工作。整个pipeline的冗长和软件效率的问题导致预览无法达到相机的输出能力。

用下面https://wiki.veye.cc/index.php/Mv_series_camera_appnotes_4_jetson/zh#.E5.B8.A7.E7.8E.87.E7.BB.9F.E8.AE.A1
7.3.2 帧率统计
的命令来统计一下实际相机输出的帧率。

@lin 相机触发模式出图和流模式出图，对你的程序接收图像而言，没有区别啊！

@scroll 您好，我使用其他的相机，遇到了和您一样的问题，请问您解决了吗？

@fancong
请参考：
https://github.com/veyeimaging/nvidia_jetson_veye_bsp/releases/tag/v1.29

@alex_ai said in IMX462M pixelformat on RPi5:

I need wait for clear sky to test and provide feedback

Finally tested, for gain value 20 it is looks pretty same with color sensor with ISP, but background no so black as for color sensor.
For me this issue resolved, attached examples to compare (10 seconds stacks)

IMX462 mono
IMX462M_small.jpg

IMX462 color with ISP
IMX462C_small.jpg

@oleg
This link provides a reference for workarounds to this problem.
Camera menu appears on VEYE-MIPI-IMX327S

However, I'm curious why this issue occurs so frequently on your end. Could you please measure the SCL level using an oscilloscope? When the VEYE module is not configured, SCL should always remain high. If there are frequent and continuous level changes, it indicates that the system is operating on the I2C bus.

430b65cc-ea10-47f9-ae2a-42c02f3119eb-bddd9a7161c7e66c0648f1da3766162.png

@egor Sorry, I think the accurate way to do this now is still through an external sensor like a photocell.

@carrot said in Can't select 25Hz framerate on MIPI IMX462:

Please try this:

sudo ./veye_mipi_i2c.sh -w -f videoformat -p1 PAL -b 9 gst-launch-1.0 nvv4l2camerasrc device=/dev/video0 ! "video/x-raw(memory:NVMM),format=(string)UYVY,width=(int)1920,height=(int)1080" ! nvvidconv ! "video/x-raw(memory:NVMM),format=(string)I420" ! fpsdisplaysink video-sink=fakesink -v

@veye_xumm 请问FPGA和RK3588直连，没有I2C，怎么在设备树里添加相机？相机驱动又该怎样处理？

@nb 您好，我遇到了类似的问题，请问一下您的解决方案就是将4.6的opencv更换成4.2的opencv吗？

@veye_xumm 感谢感谢，谢谢楼主指点

@etherealhorizon
使用mv_mipi_i2c.sh脚本，只是直接写入了摄像头寄存器，配置了摄像头的数据格式，但是v4l2驱动中并未得到通知。建议你采用v4l2-ctl配置相机关于相机分辨率，帧率，数据格式的参数。
比如用下面这个脚本测测看。

export WIDTH=704 export HEIGHT=544 export FPS=319 v4l2-ctl --set-ctrl roi_x=0 v4l2-ctl --set-ctrl roi_y=0 v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=XY12 v4l2-ctl --set-ctrl frame_rate=$FPS v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=XY12 --stream-mmap --stream-count=1000 -d /dev/video0 --verbose --stream-to=test1.raw

@dan
Please try this image.

export I2C_BUS=7 export WIDTH=1280 export HEIGHT=1024 export FPS=108 media-ctl -d /dev/media0 --set-v4l2 '"m00_b_mvcam '"$I2C_BUS"'-003b":0[fmt:Y8_1X8/'"$WIDTH"'x'"$HEIGHT"'@1/'"$FPS"']' v4l2-ctl -d /dev/video0 --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=GREY --stream-mmap --stream-count=-1 --stream-to=/dev/null

93427bda-d9b6-4263-be24-30aac77b3df5-image.png

@lin 应该还是设备树配置的问题。

@sqf121
这个问题已经解决，请参考一下github上的更新。
https://github.com/veyeimaging/raspberrypi_v4l2

@lnlinh said in CS-MIPI-IMX307 hardware trigger:

streammode

Sorry, CS-MIPI-IMX307 does not support external trigger mode, only free running and sync mode.

@w88121446 我们用的firefly的板子，gstreamer是支持gray8数据格式的。

@lin 你好，现在我们并没有使用rk3588内部的isp的经验。不好意思。