我有罗技C310相机，声称特性为720p 30fps .

如果您将相机连接到窗口，录制完全符合规定的720p 30fps - 图像清晰 .

挑战是将相同的相机连接到OrangePI(服务器Armbian)并在其上保存视频文件 .

相机显示为/ dev / video0 .

sudo ffmpeg -f v4l2 -s 1280x720 -i /dev/video0 output.wmv

结果，我得到一张频率为5 fps的易碎图片 .

也许我正在使用ffmpeg错误？请帮助我在Linux上有网络摄像头经验的人...提前谢谢 .

USB摄像头配置：

v4l2-ctl --all --device=/dev/video0

Driver Info (not using libv4l2):

Driver name : uvcvideo

Card type : UVC Camera (046d:081b)

Bus info : usb-1c1c000.usb-1

Driver version: 4.14.18

Capabilities : 0x84200001

Video Capture

Streaming

Extended Pix Format

Device Capabilities

Device Caps : 0x04200001

Video Capture

Streaming

Extended Pix Format

Priority: 2

Video input : 0 (Camera 1: ok)

Format Video Capture:

Width/Height : 1280/720

Pixel Format : 'YUYV'

Field : None

Bytes per Line : 2560

Size Image : 1843200

Colorspace : sRGB

Transfer Function : Default

YCbCr/HSV Encoding: Default

Quantization : Default

Flags :

Crop Capability Video Capture:

Bounds : Left 0, Top 0, Width 1280, Height 720

Default : Left 0, Top 0, Width 1280, Height 720

Pixel Aspect: 1/1

Selection: crop_default, Left 0, Top 0, Width 1280, Height 720

Selection: crop_bounds, Left 0, Top 0, Width 1280, Height 720

Streaming Parameters Video Capture:

Capabilities : timeperframe

Frames per second: 5.000 (5/1)

Read buffers : 0

brightness (int) : min=0 max=255 step=1 default=128 value=128

contrast (int) : min=0 max=255 step=1 default=32 value=32

saturation (int) : min=0 max=255 step=1 default=32 value=32

white_balance_temperature_auto (bool) : default=1 value=1

gain (int) : min=0 max=255 step=1 default=64 value=192

power_line_frequency (menu) : min=0 max=2 default=2 value=2

white_balance_temperature (int) : min=0 max=10000 step=10 default=4000 value=4610 flags=inactive

sharpness (int) : min=0 max=255 step=1 default=24 value=24

backlight_compensation (int) : min=0 max=1 step=1 default=0 value=0

exposure_auto (menu) : min=0 max=3 default=3 value=3

exposure_absolute (int) : min=1 max=10000 step=1 default=166 value=249 flags=inactive

exposure_auto_priority (bool) : default=0 value=1

led1_mode (menu) : min=0 max=3 default=3 value=3

led1_frequency (int) : min=0 max=131 step=1 default=0 value=0