BRIO 4K Stream 网络摄像头在 windows-10-pro 机器上没有报告更高的分辨率，但在 windows-10-home 机器上一切正常。
知道如何解决该问题吗？
到目前为止我已经尝试过：
- 从正常工作的机器上取出网络摄像头驱动程序并安装在有问题的机器上
- 将 Windows 更新至最新版本
- 使用 windows-media-foundation API 列出模式而不是 directshow
- 用 Google 搜索 logitech brio 的具体问题以及我想到的任何相关内容
- 在罗技支持网站上打开问题
- 在网络摄像头前连接了 usb3 集线器
- 尝试过主板上的每个 USB 端口
- 通过 USB-c 转 USB-c 线将摄像头连接到 Geforce RTC 2070 上的 usb3.0 端口
有问题的机器信息和 FFMPEG 命令：
OS Name: Microsoft Windows 10 Pro
OS Version: 10.0.18362 N/A Build 18362
Processor(s): 1 Processor(s) Installed.
[01]: Intel64 Family 6 Model 63 Stepping 2 GenuineIntel ~3501 Mhz
Total Physical Memory: 65,360 MB
Hotfix(s): 6 Hotfix(s) Installed.
[01]: KB4506991
[02]: KB4497165
[03]: KB4498523
[04]: KB4503308
[05]: KB4508433
[06]: KB4505903
ffmpeg.exe -f dshow -list_options true -i video="BRIO 4K Stream Edition"
ffmpeg version N-94455-g01994c93db Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190716
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 33.100 / 56. 33.100
libavcodec 58. 55.100 / 58. 55.100
libavformat 58. 30.100 / 58. 30.100
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.100 / 7. 58.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
[dshow @ 0000018a9fa09600] DirectShow video device options (from video devices)
[dshow @ 0000018a9fa09600] Pin "Capture" (alternative pin name "0")
[dshow @ 0000018a9fa09600] pixel_format=yuyv422 min s=640x480 fps=5 max s=640x480 fps=30
....
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=640x480 fps=5 max s=640x480 fps=30
....
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=1280x720 fps=5 max s=1280x720 fps=60.0002
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=1600x896 fps=5 max s=1600x896 fps=30
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=1600x896 fps=5 max s=1600x896 fps=30
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=30
[dshow @ 0000018a9fa09600] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=30
video=BRIO 4K Stream Edition: Immediate exit requested
不同机器上的正确输出：
OS Name: Microsoft Windows 10 Home
OS Version: 10.0.18362 N/A Build 18362
Processor(s): 1 Processor(s) Installed.
[01]: Intel64 Family 6 Model 158 Stepping 10 GenuineIntel ~3696 Mhz
Total Physical Memory: 16,308 MB
Hotfix(s): 2 Hotfix(s) Installed.
[01]: KB4508433
[02]: KB4505903
ffmpeg.exe -f dshow -list_options true -i video="BRIO 4K Stream Edition"
ffmpeg version N-94452-g9af8ce754b Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190716
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 33.100 / 56. 33.100
libavcodec 58. 55.100 / 58. 55.100
libavformat 58. 30.100 / 58. 30.100
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.100 / 7. 58.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
[dshow @ 0000021ea7d28580] DirectShow video device options (from video devices)
[dshow @ 0000021ea7d28580] Pin "Capture" (alternative pin name "0")
[dshow @ 0000021ea7d28580] pixel_format=yuyv422 min s=640x480 fps=5 max s=640x480 fps=30
....
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=1280x720 fps=5 max s=1280x720 fps=90.0001
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=1600x896 fps=5 max s=1600x896 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=1600x896 fps=5 max s=1600x896 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=60.0002
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=60.0002
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=2560x1440 fps=5 max s=2560x1440 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=2560x1440 fps=5 max s=2560x1440 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=3840x2160 fps=5 max s=3840x2160 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=3840x2160 fps=5 max s=3840x2160 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=4096x2160 fps=5 max s=4096x2160 fps=30
[dshow @ 0000021ea7d28580] vcodec=mjpeg min s=4096x2160 fps=5 max s=4096x2160 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=640x480 fps=5 max s=640x480 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=640x480 fps=5 max s=640x480 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=640x360 fps=5 max s=640x360 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=640x360 fps=5 max s=640x360 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=1280x720 fps=5 max s=1280x720 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=1280x720 fps=5 max s=1280x720 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=1920x1080 fps=5 max s=1920x1080 fps=30
[dshow @ 0000021ea7d28580] pixel_format=nv12 min s=1920x1080 fps=5 max s=1920x1080 fps=30
video=BRIO 4K Stream Edition: Immediate exit requested
请注意有问题的输出中不存在的附加模式s=1920x1080 fps=60。s=4096x2160 fps=30
谢谢，亚历克斯
答案1
BRIO 4K Stream 网络摄像头需要 USB 3.1 端口来报告 UHD 分辨率。
我测试过PEX-U31-01 Gembird 2-port USB 3.1 PCI-Express add-on card
不要忘记连接 SATA 电源线
当连接到PEX-U31-01卡相机报告UHD模式时：
[dshow @ 000001a82352a840] vcodec=mjpeg min s=2560x1440 fps=5 max s=2560x1440 fps=30
[dshow @ 000001a82352a840] vcodec=mjpeg min s=2560x1440 fps=5 max s=2560x1440 fps=30
[dshow @ 000001a82352a840] vcodec=mjpeg min s=3840x2160 fps=5 max s=3840x2160 fps=30
[dshow @ 000001a82352a840] vcodec=mjpeg min s=3840x2160 fps=5 max s=3840x2160 fps=30
[dshow @ 000001a82352a840] vcodec=mjpeg min s=4096x2160 fps=5 max s=4096x2160 fps=30
[dshow @ 000001a82352a840] vcodec=mjpeg min s=4096x2160 fps=5 max s=4096x2160 fps=30
问题是，使用卡时，捕获不适用于 1080p 和更高分辨率PEX-U31-01。Logitech Capture应用程序显示Camera not connected消息。FFMPEG 未接收到帧。