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ZV-1 4K issues... and a question

Explorer ,
Oct 06, 2022 Oct 06, 2022

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Hi all, when adding 4K footage from my recently-acquired Sony ZV-1 to my sequence, the view in the program monitor freezes. I expect my MacBook (mid-2015, 2.8 GHz Quad-Core Intel Core i7, 16 GB) to struggle with 4K footage, but not to keel over so completely. I've created a proxy file and that seems to work fine, but as soon as I press Toggle Proxies it's game over. The view simply doesn't update. I can switch to another timeline, I can theoretically browse, but there's now update in the program monitor. So I seem to have a basic problem with this 4K footage, and looking at the Activity Monitor, there's no great overload of CPU.

Now my question. I want to create some tutorial videos in 1080p. I'm a guitarist, and I want to create a zoomed-in portion for my left hand. So the idea is to have a duplicate of my clip at 250% of the original size, with an opacity mask so I get a circle of my magnified hand. Of course, using 1080 footage, the magnified portion looks a little weedy. My idea was to use 4K footage on a 1080 sequence, with the thought that the magnified portion would look better. Is this daft? If the 4K footage is resized to the dimensions of the 1080 timeline (showing I guess at 50%), does that negate the idea that the enlarged portion would have a higher resolution than an enlarged 1080 clip?

I hope that makes sense, many thanks to anyone who can shed light on either issue. If the answer to the question about 4K on a 1080 sequence is that it's not worth bothering with, then the first issue about basic compatibility with my machine and 4K footage generally is moot.

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Error or problem , Formats , Freeze or hang , Performance

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Community Expert ,
Oct 06, 2022 Oct 06, 2022

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Dropping 4K in a 1080p sequence is the way to go if you want to zoom in. But dont go past 100%. Above this amout will result in quality loss.

 

Instead of proxies you could transcode all footage to a more edit-friendly codec such as Prores 422 HQ.

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Explorer ,
Oct 06, 2022 Oct 06, 2022

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Thanks. When you say 'don't go past 100%', you mean 100% of the original (which has been reduced to 50% to fit the 1080 sequence) ? So, returning the 4K to native resolution effectively

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Community Expert ,
Oct 06, 2022 Oct 06, 2022

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I have my preference scaling set to None:

AnnBens_0-1665067497595.png

 

AnnBens_1-1665067519756.png

AnnBens_2-1665067550293.png

 

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Explorer ,
Oct 07, 2022 Oct 07, 2022

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Great, that makes sense. These are YouTube videos, and I can see that 4K on a 1080 timeline gives me the option to magnify with no apparent loss of quality. Thanks for your help, I guess shooting in 4K will be worth it. This must be quite a common thing. @Ann Bens does it 'feel' cropped, because of the optics? Do you tend to shoot any wider in 4K because you always have the option to zoom a bit in post?

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