FORUMS: list search recent posts

Quality loss in 16:9 export of anamorphic video

COW Forums : Adobe Premiere Pro

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Kurt Vincent
Quality loss in 16:9 export of anamorphic video
on Jul 31, 2018 at 1:19:15 am

Editing video in a timeline with sequence settings that match the anamorphic master video resolution (2880x2160) with the Pixel Aspect Ratio set to 2.0.

When I export with settings that match the source clip the quality is lossless in my eyes. But...

When I export to a 1920x1080 with letterbox it is slightly less sharp and muddy - clear to the eye.

I am guessing it is something to do with the Pixel Aspect Ratio having to be turned to Square when exporting to 1920x1080.

How should I export this anamorphic edit to 16:9?

I am cutting a fundraising teaser for a doc and only have a few days before delivery eod...any advice regarding anamorphic workflow in Premiere would be appreciated. I have scoured the forums and am still trying to figure this out.
Thanks in advance.

-Kurt


Return to posts index

Chris Wright
Re: Quality loss in 16:9 export of anamorphic video
on Jul 31, 2018 at 1:21:54 am

what are you exporting for?


Return to posts index

Kurt Vincent
Re: Quality loss in 16:9 export of anamorphic video
on Jul 31, 2018 at 1:27:44 am

YouTube/Vimeo.

I will also need to export a high res version for colorist working in DaVinci.


Return to posts index


Kurt Vincent
Re: Quality loss in 16:9 export of anamorphic video
on Jul 31, 2018 at 1:59:03 am

It just occurred to me - is the loss in sharpness in the 16:9 simply from the smaller resolution?


Return to posts index

Chris Wright
Re: Quality loss in 16:9 export of anamorphic video
on Jul 31, 2018 at 2:47:45 am

its a big reduction in quality. you can upload 4k to youtube as youtube will automatically letterbox.

as you have surmised, going from anamorphic to 16:9 won't be pretty.
Since:
Aspect Ratio = (Horizontal Resolution / Vertical Resolution) × Pixel Aspect Ratio

so your AR = 2.66666 square
and 16:9 = 1.77 square

To fit the player perfectly, encode at these resolutions:
2160p: 3840x2160
1440p: 2560x1440
1080p: 1920x1080

but if you had to keep AR, 2.6 square would be 1920/720 square pixels or 2880x1080.

anamorphic videos will be letterboxed in both 16:9 and 4:3 players. The player can only do this if the native aspect ratio of the video is maintained - i.e. don't add black bars to the video itself.
Note: If you add letterboxing to a video before uploading it, the widescreen player will add vertical bars, resulting in black bars all around the video and a bad viewing experience.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2018 CreativeCOW.net All Rights Reserved
[TOP]