Add support for YUYV

[julian59189]

Currently only MJPEG is supported but it would be great if there was support for the YUYV format.
Showing:

2021/07/31 15:35:43 setting format to 640x480 YUYV
2021/07/31 15:35:43 device or resource busy
exit status 1

Sample camera settings:

	Driver name      : ov534
	Card type        : USB Camera-B4.09.24.1
	Bus info         : usb-3f980000.usb-1.5
	Driver version   : 5.10.17
	Capabilities     : 0x85200001
		Video Capture
		Read/Write
		Streaming
		Extended Pix Format
		Device Capabilities
	Device Caps      : 0x05200001
		Video Capture
		Read/Write
		Streaming
		Extended Pix Format
Priority: 2
Video input : 0 (ov534: ok)
Format Video Capture:
	Width/Height      : 640/480
	Pixel Format      : 'YUYV' (YUYV 4:2:2)
	Field             : None
	Bytes per Line    : 1280
	Size Image        : 614400
	Colorspace        : sRGB
	Transfer Function : Default (maps to sRGB)
	YCbCr/HSV Encoding: Default (maps to ITU-R 601)
	Quantization      : Default (maps to Limited Range)
	Flags             :
Streaming Parameters Video Capture:
	Capabilities     : timeperframe
	Frames per second: 30.000 (30/1)
	Read buffers     : 2````

[vladimirvivien]

@julian59189 awesome. Thanks for the detail issue.
This will be top priority to get out soon.

[julian59189]

Hi @vladimirvivien any update on this?

[vladimirvivien]

Hi @julian59189
There has been a lot of changes since that time. If you get a chance, try the latest release, let me know if this is still an issue for you.

[dschissler]

I'm unable to get "webcam" and "snapshot" to work on a RPI 4B, and PS3 Eye. These are old cameras, but they're still abundant and popular.

v4l2Device Info:
	Driver name              : ov534
	Card name                : USB Camera-B4.09.24.1
	Bus info                 : usb-0000:01:00.0-1.2
	Driver version           : v6.1.58
	Driver capabilities : 85200001
		video capture (single-planar)
		extended pixel format
		read/write IO
		streaming IO
		device capabilities
	v4l2Device capabilities : 85200001
		video capture (single-planar)
		extended pixel format
		read/write IO
		streaming IO
Video input: 0 (ov534 : ok)
Video format for capture (default):
	Width x Height           : 640 x 480
	Pixel format             : YUYV 4:2:2
	Field                    : none
	Bytes per line           : 1280
	Size image               : 614400
	Colorspace               : sRGB
	Transfer function        : Default (map to Rec. 709)
	YCbCr/HSV encoding       : Default (map to ITU-R 601)
	Quantization             : Default (map to Limited range)
Supported formats:
	[0] 8-bit Bayer GRGR/BGBG : Sizes: [320x240] [640x480] 
	[1] YUYV 4:2:2           : Sizes: [320x240] [640x480] 
Crop capability for video capture:
	Bounds:                  : left=0; top=0; width=0; heigh=0
	Default:                 : left=0; top=0; width=0; heigh=0
	Pixel aspect             : 0/0
Stream capture parameters:
	Capability               : time per frame
	Capture mode             : not specified
	Frames per second        : 30/1
	Read buffers             : 2