Cropping a camera view.

[Tacoman]

How do you crop unwanted areas of a camera view. I upgraded to a new camera with a wide field of view. About 1/3 of the frame is just the side of the house and I want to crop it. I want to narrow it down so it it just the walkway. I have done this before on a prior version of BI but I can't remember how. I thought there was a way to just drag the border but remember how.

Thanks for reading
John

 

[TonyR]

Camera make and model?

I ask because some cameras have a "corridor view" settable in the camera's webGUI, it changes the aspect ratio from 16:9 to 9:16 or from 4:3 to 3:4 without distortion.

 

[Tacoman]

It is an Amcrest. Not sure of the model number. I just looked at the webGui and can't find the "corridor view" settings. It sounds like exactly the thing I need. Can you give me a clue?

Thanks for the help
John

 

[aesterling]

Do you have this option?

 

[TonyR]

Do you have this option?

View attachment 197315

That will rotate the image to match the camera's mount rotation; 180 would be if camera is mounted upside-down from normal.

He needs a change in aspect ratio; camera and/or mount is not rotated but what the camera displays as a "normal" 16 wide to 9 high ratio (1920 x 1080 is 16:9) becomes 9:16 in "corridor" mode (narrow top and bottom, wide on sides, just opposite of "normal").

EDIT 6/28 @ 0626 CDT: See post #6 for method to achieve "corridor" mode.

 

[TonyR]

If no available "corridor view" you could do this (I just did it with an Amcrest IP2M-841):

• Re-mount camera, rotating its face 90°
• Log into cam's webGUI to "Setup" => "Camera" => "Configuration" and select from the drop-down menu in "Flip" the "90° "
• Depending on which direction your 90° was chosen you may have to select the radio button for "Mirror"
• Click on "Save."

In Blue Iris the video settings for "Rotate" would be set to "0" (zero).

 

[TonyR]

Do you have this option?

View attachment 197315

As it turns out, you are partially correct.

This can provide a "corridor view" as desired if you also physically re-mount the camera 90° from its original orientation, select "Flip" to "90° " and depending on how it was accomplished also select the "mirror" button. I covered this in the above post #6.

Thanks for the nudge to look into this further for the OP.

 

[Tacoman]

As it turns out, you are partially correct.

This can provide a "corridor view" as desired if you also physically re-mount the camera 90° from its original orientation, select "Flip" to "90° " and depending on how it was accomplished also select the "mirror" button. I covered this in the above post #6.

Thanks for the nudge to look into this further for the OP.

I can get to the screen that Mr. aesterling suggests. Even rotating the camera and the view then adjusting the aspect ratio does not get to a good corridor view. I must be missing something. The thing that has me flummoxed is I have another camera that I did this on a couple of year ago and I just can't remember how. I THINK it was all done from BI and it was just involved a simple crop using the mouse to drag the border.

 

[TonyR]

FWIW, I physically rotated the cam 90°, selected rotate 90° in the cam's webGUI but never had to make any changes in Blue Iris, didn't monkey with the aspect ratio; it automatically went to 4:3 for 640 x 480.

 

[aesterling]

@Tacoman You could also try the Area of interest (AOl) option in Camera settings > Video tab. From the help file, "The AOI (area of interest) setting may be used with network IP cameras to select a sub-set of the camera’s video frame as the video source."

 

[Tacoman]

That worked perfectly. One thing though, you can't have the Anaporphic box checked. If you have it checked the image will be resized to fit the display area.