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@veye_xumm 好的吧，感谢

树莓派 4B，IMX327，64bit PiOS，log 如下

pi@raspberrypi:~/Desktop $ ffmpeg -i /dev/video0
ffmpeg version 4.3.4-0+deb11u1+rpt3 Copyright (c) 2000-2021 the FFmpeg developer                                                                                                                                                             s
  built with gcc 10 (Debian 10.2.1-6)

[video4linux2,v4l2 @ 0x55b4005fa0] ioctl(VIDIOC_G_PARM): Inappropriate ioctl for                                                                                                                                                              device
[video4linux2,v4l2 @ 0x55b4005fa0] Time per frame unknown
[video4linux2,v4l2 @ 0x55b4005fa0] ioctl(VIDIOC_STREAMON): Invalid argument
/dev/video0: Invalid argument

pi@raspberrypi:~/Desktop $ ffmpeg -f v4l2 -list_formats all -i /dev/video0
ffmpeg version 4.3.4-0+deb11u1+rpt3 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)

[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :     yuyv422 :           YUYV 4:2:2 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :     uyvy422 :           UYVY 4:2:2 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : Unsupported :           YVYU 4:2:2 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : Unsupported :           VYUY 4:2:2 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :    rgb565le :     16-bit RGB 5-6-5 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :    rgb565be :  16-bit RGB 5-6-5 BE : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :    rgb555le : 16-bit A/XRGB 1-5-5-5 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :    rgb555be : 16-bit A/XRGB 1-5-5-5 BE : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :       rgb24 :     24-bit RGB 8-8-8 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :       bgr24 :     24-bit BGR 8-8-8 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       :        0rgb : 32-bit A/XRGB 8-8-8-8 : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : bayer_bggr8 : 8-bit Bayer BGBG/GRGR : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : bayer_gbrg8 : 8-bit Bayer GBGB/RGRG : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : bayer_grbg8 : 8-bit Bayer GRGR/BGBG : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : bayer_rggb8 : 8-bit Bayer RGRG/GBGB : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 0x55bf2b9fa0] Raw       : Unsupported : 10-bit Bayer BGBG/GRGR Packed : {16-16376, 1}x{16-16376, 1}
[video4linux2,v4l2 @ 

@veye_xumm 好的好的，感谢，我去试一下

@veye_xumm 好的好的，感谢

@veye_xumm 请问您这边测试的怎么样了呢？

@veye_xumm 好的好的，谢谢您

@veye_xumm 板子是树莓派 4B，系统是 64bit的 PiOS，摄像头是 IMX327

按照官方教程 进行测试，到 Gstreamer 应用范例 部分都还测试正常工作。然后测试到 用 opencv 获取图像 时，三个示例都报错，未找到摄像头设备，报错情况如下：

请问一下，这是什么原因呢？