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M
Michael Grenadier
Legend
September 1, 2021
Question

changing the pixel dimensions of a sequence from 4k to 1080

  • September 1, 2021
  • 2 replies
  • 3055 views

So I'm cutting a music video that was shot with 3 4k cameras.  I intially was editing it as a 4k sequence but realized that our distribution will be 1080 and want to change the pixel dimensions of the sequence.  I know I can just change the pixel dimensions in thte sequence settings or copy and paste the contents of the 4k sequence in to a 1080 sequence, but wondering if there's a simple way to do this and preserve my scaling, repositions and animation.  Since it's only about 4 minutes long, not a big deal to manually match, but hoping for a shortcut...

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2 replies

A
Andy 1968
Inspiring
September 2, 2021

You don't have to create a 4K sequence, 1080P sequence and DVD 720 X 480 Sequence. Simply create the 4K sequence. You can change the resolution and even the aspect ration at export. You can skip forward to the two minute mark of the video below to see how it can be done. 



A
ah.photo
Inspiring
September 1, 2021

For what it's worth, if the change in resolution is ONLY for your deliverable export: I would just suggest you keep your sequence setting as is, and then just set your export resolution to 1080p. You can even use the export setting "Use Maximum Render Quality" to improve the scaling quality when downscaling in that manner. Besides, this way down the road if you ever want to keep a 2160p archive for any reason, you have it.

 

If you need to rescale the sequence because you need to crop in on some shots and not lose as much quality. Well, you could duplicate your sequence and change the resolution of your copy. Premiere will attempt to preserve scaling as much as possible (as long as you've ticked that box in the sequence settings window). However, if you ever run into some complex issues with scaling, you could always refer back to your original, untouched sequence.

    A
    ah.photo
    Inspiring
    September 1, 2021

    I should clarify:

    I erronously assumed UHD for when you wrote"4K". If you're truly using 4K 1.9:1 footage, you would have a different aspect ratio going down to 16:9. You still could export at 1080p if you want, and use the export window crop options to crop to a 16:9 frame, to ensure your 1080p export doesn't have any letterboxing. You'd just lose a small amount on the left and right edge.

      M
      Michael GrenadierAuthor
      Legend
      September 1, 2021

      thanks.  of course, one of the cameras IS 4k, and the other 2 are UHD...  and yeah, I understand about slightly scaling up the 4k material to eliminate the slight letterboxing...  And yeah, I need to adjust the scaling to maintain maximum quality.  Probably should have just edited in a 1080 timeline, but with the complication of multicamera, etc.  I didn't...  lesson learned.     So there doesn't seem to be an automatic way to do this, I just divide the scaling in 1/2 in the 1080 sequence and (with a 1080 output on a higher video track with 50% opacity, match the position and animation.  working ok so far...

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