[Byron Nelson]

Hello Francois,

I have a 1920 x 1080 video with fisheye from an action camera. I want to correct the fisheye and output a rectangular video that is just the un-distorted portion of the fisheye-corrected video.

So, I have this video that I want corrected..

so that the final video looks like this…

I loaded the original 1080p video, then corrected it, and used the corrected image to determine the width and height of the final video that I would need (that needed to grab the rectangle in the original post). It was 1550 x 720 .

I set my project to those dimensions.

Next, I loaded the 1920×1080 clip. Notice how the clip is not scaled to fit into the project. The project simply works as a window on to larger image.

So that when I apply the correction to the video, it scales down and fits my project window…

Then, I can export a 1550 x 720 undistorted (relatively) video.

best,
Byron

[Byron Nelson]

.. I meant the last picture, not second to last.

[Byron Nelson]

What I get then is in the second to last picture

[Byron Nelson]

Thanks for the reply, but I still can’s achieve my goal.

Here is a shot of the original video.

Here is what I am hoping to achieve-

I want to output a video of the dimensions that are marked by the red center rectangle. I essentially want to have a video with the distorted corners cut off without letterboxing.

I think I am following the steps you outlined. I use the 1920×1080 project properties. Then I pan/crop down to size and I obtain this-

Then I distort, and I achieve the following

Which is a distortion of the cropped image. Either with stretching the image in the pan/crop settings or not the result is the distortion is of the cropped image.

So, I reversed order of the distort and crop, and tried to distort first, then crop.
And that simply came out bizzare regardless.

Hitfilm seems to treat the video as a canvas with the project properties defining a window looking onto that canvas such that they can be different sizes. Their Pan/crop (transform controls) moves and sizes the canvas where you can fit it into the window as you wish.

For instance, putting the bigger video into a project with a smaller window only shows me a portion of that canvas. Then, when I distort the canvas, I bring in elements that I want into the window, leaving the corners outside.

I can’t quite intuit what it is that Vegas does.

Thanks,
Byron

[Byron Nelson]

I use an Alienware and can’t complain about it. One thing that is important in a hard-working video processing laptop is cooling capacity. My previous HP literally melted down. My Alienware stays cool on similar tasks, seldom getting over 69c. I think Dell has some “black friday” deals on them now.

[Byron Nelson]

Many thanks for the suggestion Mike. I’ll give it a try- surely I have at least a few seconds of the static view through the windshield before I got into the front seat at the beginning of the video.

Best,
Byron

[Byron Nelson]

Success! Thank you all for your help!

[Byron Nelson]

Thanks for the information! My clip is short enough that I can manage to do it with keyframes manually- yet what I cannot seem to accomplish is to adjust where the head in from the track containing the head appears in the frame of that contains the body.

If, on an example frame, the masked head’s center pixel is at 400,600 in the track containing the head (0,0 being top left corner) it appears at 400,600 in the track containing the body, when it might need to appear at 555,737 to match the neck in the track containing the body.

What it is that I cannot seem to find a way to do is to modify where the view produced by the masking in one frame appears in the other. The mask works as a window straight through the top layer. What it is that I want to accomplish is to billboard the mask & be able to place that billboard anywhere on the top layer. Is that possible?

Best,
Byron