1. What is difference between 1080p version and 720P version USB HDMI grabber card?

Both of 720P and 1080P version USB HDMI grabber card can take the HDMI source resolution is as below.

	720P version UVC HDMI grabber card	1080p version UVC HDMI grabber card
HDMI input	1920x1080p @60 /50/30/24 fps 1920x1080i  @60/50 field 1366x768 @60fps 1280x720 @60 /50 fps 720x480p @30fps	1920x1080p @60 /50/30/24 fps 1920x1080i  @60/50 field 1366x768 @60fps 1280x720 @60 /50 fps 720x480p @30fps
USB UVC output	Single  1280x720p 30fps mjepg, 10fps YUV	Single  1920x1080p 15fps mjepg, 5fps YUV
advantage	1. it is very easy to use!    NO crop issue 2. Single one 1280x720p uvc output. (see the below diagram)	. it is very easy to use!    NO crop issue 2. Single one 1920x1080p uvc output.
disadvantage	1. it is no 1920x1080p output	1. it is no 1280x720p

The difference is output resolution and how to display


CASE1: 720P version usb hdmi grabber card: (Default Shipping)


720P version add the scale up /down function

all of kind of hdmi input resolution will scale up /down into single one 1280x720p output:

CASE2: 1080p version USB HDMI grabber card:


1080P version add the scale up /down function

all of kind of hdmi input resolution will scale up /down into single one 1920x1080p output: