Question about zooming in Movie Edit Pro

jak.willis wrote on 5/10/2020, 8:10 AM

Hello,

I have a question about zooming in Movie Edit Pro. When you zoom using size/position or section, does the video start to degrade in picture quality?

Comments

CubeAce wrote on 5/10/2020, 8:38 AM

@jak.willis

Hi Jak.

Yes! You are dropping resolution all the time. If you were using 4K files and zooming in 50% you would effectively be producing an HD clip (1080 x 1920). You are effectively cropping away image data and enlarging each pixel within the image. This is why some YouTubers use 8K cameras. Although YouTube only presently supports 4K, if contributors want to have room to tidy up poor framing, unwanted detritus not noticed in the corners of a take at the time of filming they can crop down the image and not lose quality of their final production.

Anyone else could do the same assuming they have some headroom in their equipment to do this, such as filming in 4K and producing a 1080p video.

Ray.

Last changed by CubeAce on 5/10/2020, 8:39 AM, changed a total of 1 times.

 

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jak.willis wrote on 5/10/2020, 10:20 AM

@jak.willis

Hi Jak.

Yes! You are dropping resolution all the time. If you were using 4K files and zooming in 50% you would effectively be producing an HD clip (1080 x 1920). You are effectively cropping away image data and enlarging each pixel within the image. This is why some YouTubers use 8K cameras. Although YouTube only presently supports 4K, if contributors want to have room to tidy up poor framing, unwanted detritus not noticed in the corners of a take at the time of filming they can crop down the image and not lose quality of their final production.

Anyone else could do the same assuming they have some headroom in their equipment to do this, such as filming in 4K and producing a 1080p video.

Ray.

Hello Ray,

Thanks for your reply to my question.

In my case I’m shooting in 1080p and was looking to zoom (or crop) in to the picture. So if I only zoom in a little bit, will you see a difference in the quality?

CubeAce wrote on 5/10/2020, 12:10 PM

@jak.willis

Hi Jak.

It depends on how good your eyesight is 😂.

More seriously, it also depends on how it's filmed and whether the video comes from the same source or not and whether they were all shot under the same lighting conditions using the same camera. But my first comment although a bit tongue-in-cheek also holds up. As with stills photography, you will always get better results getting the result you want at the time of capture in the camera rather than in the editing suite unless you can do as I suggested in my previous reply.

The person editing is always going to notice unless their eyesight or their equipment has some deficiency, or they just can't see a difference. The casual observer almost never notices as much as someone who does a lot of editing. Then thee is the question of viewing distance. The closer you are the more easily you pick out differences. One reason I still prefer to see a good feature film at a cinema is the viewing of special effects is better than viewing from home where for me at least special effects are just annoying and distracting.

Ray.

 

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Intel i9900K Coffee Lake 3.6 to 5.1GHz CPU with Intel UHD 630 Graphics .Driver version Graphics Driver 31.0.101.2135 for 7th-10th Gen Intel® with 64GB of 3200MHz Corsair DDR4 ram.

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Running MMS 2024 Suite v 23.0.1.182 (UDP3) and VPX 14 - v20.0.3.180 (UDP3)

M Audio Axiom AIR Mini MIDI keyboard Ver 5.10.0.3507

VXP 14, MMS 2024 Suite, Vegas Studio 16, Vegas Pro 18, Vegas Pro 21,Cubase 4. CS6, NX Studio, Mixcraft 9 Recording Studio. Mixcraft Pro 10 Studio. CS6 and DXO Photolab 8, OBS Studio.

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Rogers LS7 speakers run from Cambridge Audio P50 amplifier

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AAProds wrote on 5/10/2020, 8:32 PM

Give it crack, Jak. I've cropped/zoomed in from HD (1080) to SD and yes, the eagle-eyed Ray will spot it 🙂but if the subject is more interesting (because it is now closer) , that'll compensate. Average video is better than no video at all.

It is very easy to test what your zoom looks like: set the zoom up and then just export that section and check it in VLC Player or similar.

All my forum comments are based on or refer to my System 1.

My struggle is over! I built my (now) system 2 in 2011 when DV was king and MPEG 2 was just coming onto the scene and I needed a more powerful system to cope. Since then we've advanced to MP4 and to bigger and bigger resolutions. I was really suffering, not so much in editing (with proxies) but in encoding, which just took ages. A video, with Neat Video noise reduction applied, would encode at 12% of film speed. My new system 1 does the same job at 160% of film speed. Marvellous. I'm keeping my old system as a capture station for analogue video tapes and DV.

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