How extract crop?

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Traskmif
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How extract crop?

Post by Traskmif »

If I crop a video then I have a smaller image within a black canvas as it were. I can move it about and resize it but the canvas remains. If I save the video then I have a video with a black canvas and the cropped image within it.

How can I extract the crop to form a new video of that size, ie, without the black surround? In VSDC this is done by noting the size, copying the crop, starting a new project set at that size (so the background canvas is the same as the crop,) then pasting this crop into it. Very messy but it works. But I can't see how to do anything like that in VideoStudio 2021.

So how to fully crop, that is to produce a new video without the surrounding black border?
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Re: How extract crop?

Post by alanball »

Hi Transmif
Could you just zoom into your video to the area you require (the crop size) then you could export that portion of the video to a new file, and insert into a new location if required.
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Re: How extract crop?

Post by lata »

There several ways we can crop a video clip
1 / Using FX Cropping – will leave a black surround, to remove that simply deselect Fill Colour the video will expand to fill the frame
2 / Distort Tools - icon below preview screen – can Crop and / or Scale
3 / as Alan mentions Zoom options are available
4 / Right Click clip for Motion – Customise Motion can be used to zoom in and reposition / resize the frame.

Personally I would use 4
Cropping or zooming in will affect the quality of the video
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Re: How extract crop?

Post by Traskmif »

Each step raises more questions on each of which I spend quite some time searching multiple menus and buttons...

1. Where do I deselect the fill colour?

2. I got into difficulties and instead of undo I started a new project. But the crop frame remained and I couldn't see how to remove it except by closing VS.

3. With a fresh untouched project I see in the options panel: pan and zoom, but it is disabled. 'Keep aspect ratio' above it is also fixed and disabled.

4. Customize motion is overwhelming and doesn't seem to help with the very simple task that I wish to accomplish, thus...

Video 1920 x 1080. An aircraft in the sky. I crop around the aircraft to say 500 x 250. I want to save a video that is 500 x 250. Can VS 2021 do that?
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Re: How extract crop?

Post by lata »

Please confirm you are using the FX Cropping filter
select image for larger view
select image for larger view

Yes things seem to be getting confused
Cropping a video from 1920 x 1080 to 500 x 250 will reduce the quality to such an extent that playback will be poor. If you are intending to playback a 500 x 225 video on a full screen the video will be very pixelated.
Effectively the program will fit the 500 x 250 to fill the screen unless you are intending to use as a Picture In Picture, smaller video in a 1920 frame. Then you should use the overlay tracks for the aircraft shot.

Most Video Formats support HD sizes 1920 x 1080, 1280 x 720 although SD 720 x 480 could be used.
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Re: How extract crop?

Post by Traskmif »

Thanks. No, I was previously using the crop in the preview pane.

But this filter you mention, doesn't help.
If I check fill color and stationary I get the unwanted surround
If I check fill color and uncheck stationary then the crop expands as the video plays.
If I uncheck both I get a kind of zoom out effect.

None of those is what I want.

I agree that if I have a video of 500 x 225 expanded to 1920 x 1080 that the quality be less for the overall image but it's exactly the same for the aircraft. In other words, if you view say in a web page at 500 x 225 it will be the same quality as the original shot except all that unwanted sky is removed.

Although there are standard resolutions, a video image can be almost anything: 227 x 1800 high on a 4K screen if that's what you want.

And you mention picture in picture. If I have a video 1920 x 1080 and I want to insert a 500 x 225 picture in picture of an aircraft, how can I make that original crop? I don't want one with a black surround. Nor do I want a 1920 x 1080 version sized down. I want a library of small stock images some as little as 100 x 100 to insert or use wherever I want. How do I make them with VideoStudio?

The crop I am talking about is not my invention in my head! VSDC can do it. The crop is the two-dimensional equivalent of a trim in time. So trim a minute off the front and end of a four-minute video and you get a two minute video of the middle. What you don't get is a four minute video with a minute of black at the start and at the end. Nor do you get the two minutes in the middle slowed down to fill four-minutes. What you don't want ends up on the cutting room floor. The same is true for a crop. Throw away the sky and leave only the aircraft, no matter how tiny the video.
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Re: How extract crop?

Post by zaphodikus »

you want zoom, not crop?
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Re: How extract crop?

Post by canuck »

Traskmif,
I just can't follow what you are trying to do from your description.

You claim that VSDC (whatever that is) can do it. Why don't you create a short video, using that app, of what the result looks like and upload it to a cloud site such as Drive one,etc. We can then download it and see what you are after
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Re: How extract crop?

Post by Traskmif »

I would if I had ready access to web space, but what would you learn from it?

If I upload a 1280 x 720 mpeg of a street scene with pedestrians, traffic, buildings, but dominated by a parked car.

Then I upload another mpeg of 666 x 444 of just the parked car cropped from that scene. An exact pixel-for-pixel crop.

What would you understand from that?
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Re: How extract crop?

Post by lata »

I took one of my Dv avi video files and using Customise Motion zoomed in (250 size) to the frame selecting a smaller area. The selection of course will show in full screen
Now Share – Mov options allows me to select a size for the frame, User Defined size is also available.
Taking care to choose a size having the same ratio as the zoomed area, I choose 400 x 300 as my video was using 4:3 aspect ratio.
The resultant rendered the video to those settings.

Most of the Share options do not allow for user defined sizes although set sizes are available.

I repeated the test using the Samples Lake and Pan and Zoom
Now I rendered to MP4 choosing a 640 x 480 as the size, No User Defined size available.
Quality not that good but then zoomed in quite a way.
I have never used the smaller frame size options before but do appear to work
630 x 480.zip
(632.48 KiB) Downloaded 30 times
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