Change resolution for zoom

[Guest]

Hi everybody,

I've got a question: I start working (just for myself for the moment) on video editing. And I work on Premiere Pro.

I was wondering: on Photoshop, if you have a picture in 300 dpi, you can change the resolution in 72 dpi, uncheck the resampling, and you'll have an image biggest than before. Lower quality too.

Is it possible to do the same with Premiere Pro ? You've got a video in 4K, you want to change the resolution in 1080p, no resampling, and you've got a bigger video. And then, you can crop, for keep only the part as you want. So it's a zoom.

I hope it is clear ^^

Thanks by advance.

[Ann Bens · Accepted solution]

DPI is for printing, it  has no meaning in video, video is all about height and width in pixels.

Select sequence in Project Window,

go up to sequence / sequence settings,

set editing mode to custom,

now you can change the parametes.

[Guest]

Ok, so it is not possible to have a bigger image if I change the resolution ?

So, how can I zoom ? I know it's maybe a stupid question... But I mean, for not lose quality, is there a setting to do on the camera ? Or Adobe Premiere can do something good ?

Thx !

[Ann Bens]

If you do exactly what I wrote in my previous post

you get exactly what you want.

Change the hight and width.

And make sure Scale to Frame Size is off for every clip in the timeline.

[SAFEHARBOR11]

Ann is correct, forget about DPI - it is absolutely meaningless with video, only pixels matter.

If you want to edit 4K video in 1080p project, or 1080p in 720p, etc. - select an appropriate Sequence preset such as AVCHD > 1080p > 1080p29.97

Import your 4K clip and drop into the 1080p sequence (timeline). The video will appear "blown up" - you will only see the center of the image, the 1920x1080 pixels from the middle of the larger 3840x2160 4K image. At this point, you can use Adobe Motion effect to scale and pan the image.

Alternately, right-click the clip and choose Set to Frame Size. Do not set Scale to Frame. Set to Frame will size the 4K image to fit the 1080p frame so you see the entire image, however it does not downscale the original 4K clip, you still have those extra pixels available in waiting. Then you can use Adobe Motion and zoom in again as desired. As long as you don't scale past 100%, there is no quality loss, still using all original pixels from 4K clip. Past 100% you are then blowing up the image (duplicating pixels) and image will start to degrade.

I shoot stage events (concerts, recitals) in 4K on a wide shot of stage to include all performers, then edit as 720p, and can get decent close-ups (waist-up) of individuals using this method, and it simulates a two-camera shoot. I put razor cuts in clip where I want to change framing, then I can treat each section as a separate clip and apply different levels of zoom and pan. Meaning I can cut or dissolve from a wide shot to medium or closeup. Or use keyframes and zoom in slowly, or pan across the group. Lots of creative options available!

When editing is complete, I export as 720p and have a nice multi-cam shoot to deliver...from a single camera.

EDIT: To add to Jim's comment, if you edit 4K in a 720p sequence, you can then set zoom to 33% to see entire image. Of course final result will be 720p then, so you need to decide - if you don't need to zoom in quite so much, then use 1080p for higher-quality end result. It's a trade-off.

Thanks

Jeff

[excited_Genie16B8]

If I understand correctly, you should edit your 4K media in a 1080 sequence.  That will allow you to zoom in up to 100% without losing any quality.  To see the entire frame, set the Scale to 50%.

[Guest]

Ah ! Great thanks you for your help, I understand

This is exactly what I wanted. I need to explore Adobe Motion now !

Thx again !