Why not use Again 27,and Dgain 5? Thanks I will try and let you know.

@veye_xumm As the time is too long and there is no further feedback from the customer, I will mark this post as resolved.

@veye_xumm I understood that the synchronization signal is very accurate in an environment close to hardware. We will check the details from time to time.

@wqeeqweqwwccsd 当然是支持的。你可以看这篇文章 6.3 6.4两个部分。 http://wiki.veye.cc/index.php/FPD_LINK_III_for_Jetson/zh 其中，6.4 xavier的典型案例就有实现了同一颗954连接的两路视频的同步。

@tj You are welcome.

@veye_xumm 好的非常感谢，这个是编译动态库 用于python代码调用时使用的。就是那个SDK使用方法

@eledog 我们装了一个你用的lite版本，运行是没有问题的。 [image: 1623146723636-9ecdb20e-ebc2-49f8-8719-e16be7cff655-image.png] 你用的硬件是4GB版本，我们的是2GB版本。 我这没法重现的情况下，你可以尝试103-123行进行逐行注释来找一下原因。 [image: 1623146803776-bb570ba3-c8aa-4d0a-828b-a582d8b0222e-image.png]

@veye_xumm 由于时间太久了,客户没有进一步的反馈,我会把这个帖子标记为已解决.

@fabricio-borges This question has been asked for a long time and the status has not been updated. I will mark the status as solved, so you can follow up again if needed, or just open the question.

@vvxy 当然，327型号只支持1080p这个模式。 具体可以看我们wiki上的手册。

@jdx-jdx 是的。probe成功才会生成video节点。

@veye_xumm Ok

@veye_xumm Okay. Anyway Thank you.

@veye_xumm I was just looking at the i2c program. Call this resolved.

@veye_xumm 好的 谢谢 我再重新搞一下

@lyj 我说的这个buffer不是camera里面的buffer，而是jetson主板上为了接收图像而创建的buffer。 不能设置为1，需要有一定的冗余才好。

@dufuwei 不好意思，我们这个无法绕过ISP模块。也不能提供完整的原理图。

@antony You've made a very accurate analysis and testing, which is admirable. For this camera model, to save space, we use a double-sided contact connector, which indeed has caused some issues. We are planning to improve this module by replacing it with a 22-pin single-sided contact connector. I, together with our hardware colleagues, conducted an analysis, and the results align with your test findings. After reconnecting the FFC cable correctly following a reversal, the sensor's registers and error codes did not indicate a damaged state for the camera. [image: 1702970334043-0cc7b86d-d1f6-4833-b373-dc0dc445c5ed-f5b019a3f2a6617992ded7348331e2b.png] In the case of reversed power connection, the pins that are actually damaged are CON_CS_D1P and CON_CSI_CLKP. Unfortunately, this issue cannot be detected through software.

@veye_xumm 对的，所以我感觉很奇怪。 下面是我修改的install_driver.sh echo "Add cma=128M to /boot/firmware/cmdline.txt " echo "--------------------------------------" sudo sed 's/cma=128M//g' -i /boot/firmware/cmdline.txt sudo sed 's/[[:blank:]]*$//' -i /boot/firmware/cmdline.txt sudo sed 's/$/& cma=128M/g' -i /boot/firmware/cmdline.txt echo "Installing the $driver_name.ko driver" echo "--------------------------------------" sudo install -p -m 644 ./driver_bin/$(uname -r)/$driver_name.ko /lib/modules/$(uname -r)/kernel/drivers/media/i2c/ sudo install -p -m 644 ./driver_bin/$(uname -r)/$driver_name.dtbo /boot/firmware/overlays/ sudo /sbin/depmod -a $(uname -r) echo "reboot now?(y/n):" 谢谢！

@etherealhorizon @etherealhorizon said in IMX 287 opencv python多线程多相机硬触发帧率下降: 最后是用python多进程为每个相机分别subprocess运行v4l2-ctl命令行然后读取--stream-mmap --verbose的时间戳 这个时间戳不够准确，如果你的算法对事件准确性要求不高，也可以先这样用。 @etherealhorizon said in IMX 287 opencv python多线程多相机硬触发帧率下降: 还想请教一下怎么做real time binning，就是实时地将2x2或者4x4的像素值求和再保存，我们的c水平比较烂哈哈。 这个我们也缺乏实际经验。不好意思。