4k footage in HD sequence. Will it lose original 4k resolution?

[varlys0214]

Hello i just got a question relating to project export.

i have a 4k footage and i edited it in 

fhd sequence ,idid not match sequence size to the footage,in premiere then exported to 4k size. 

in that case, would i get the resolution if 4k? 
or it be just fhd?  if neither , and still lose its resolution, is it relatable amount of degradation for youtube 4k video? 

[Ann Bens · Accepted solution]

Putting 4K in a 1080p sequence then exporting to 4K? Yes you lose image quality.

If you want to keep 4K your sequence needs to be 4K to, but then you wont be able to zoom in on the image.

Whatever you export to Youtube will re-encode.

[jklmnpqrst]

If you put 4k in a 360p sequence and export that in 4K, you will have original image quality. Resolution of sequence does not matter.

[RjL190365]

In this case, no. All NLEs, Premiere Pro included, will re-render twice in such an instance: Once all the way down to 360p (or 1080p in the case of the discussion originator), and then upscale that already-degraded result back to 4k. And if the 4k footage isn't scaled downwards to the lower resolution, that video will be cropped as well.

This should not be confused with "destructive." An NLE is deemed "non-destructive" only if it doesn't delete the original video file on transcoding and exporting. A "destructive" NLE will completely overwrite the original video file with the new exported file.

[jklmnpqrst]

Just try it. New sequence, 360p, insert 4K video, scale it down to fit. Render in 4K. The result is definitely not upscaled 360p footage.

[RjL190365]

I did try something similar: New sequence, 320x180, insert 1080p video, scale it down to fit. Although it didn't degrade the resolution (remember, I didn't have "Use previews" checked), but it did take much, much longer to process than simply using a 1080p timeline to begin with.

In other words, what the OP was trying to do is not degrading, but merely pointless.

By the way, image quality will degrade if "Use previews" is checked in the Export settings.

[Media Editor]

I use wetransfer.com to send videos through email.  We Transfer does not re-encode the videos.  You can send up to 2 gigabytes for free.

[Ann Bens]

I do not understand where this Wetransfer fits in.

[Media Editor]

Rather than uploading to Youtube the videos can be sent directly to whomever he wants.

[Ann Bens]

Suppose OP just want to get his project onto Youtube for the world to see..........