Can you change aspect ratio from 17.9 to 16.9??

[christopherl4820085]

Hey guys this might be a really amateur question.

I have 4 k footage in 17.9 ratio when played back on YouTube it's got pillar boxing (black bars on top and bottom) I know you can change 4:3 to 16:9 which is the play back ratio on YouTube but can you change 17.9 to16.9??

[Peru Bob]

Yes.  Just drop it into a 16:9 sequence and adjust the way you want to frame it.

[Jim_Simon]

What camera shoots 17:9?

[SAFEHARBOR11 · Accepted solution]

Probably has 4K footage at 4096x2160 rather than UHD at 3840x2160.

Put the 4K clip into a UHD-sized Sequence. Part of the image will be cropped, but it should fill the screen with no bars. Use Motion > Scale if needed to size to taste. Export as UHD, 1080p or 720p, all of which are 16:9 formats.

Thanks

Jeff

[Jim_Simon]

That's still not 17:9.

Or if that's what he's got, no one calls it 17:9.

[SAFEHARBOR11]

"That's still not 17:9."

Pretty darn close, divide both sides by 240, but I do agree I've not seen the 17:9 terminology before

[christopherl4820085]

I've got a 1dx mark ii and it shoots 4096x2160 in 17.9 aspect ratio.

[Jim_Simon]

it shoots 4096x2160 in 17.9 aspect ratio.

That's not 17:9.  It's more appropriate to call it C4K, Cinema 4K, or 1.89.

[Stan Jones]

You guys got my curiosity up:

Resolution / Aspect Ratio Cheat sheet | The BLOG of CHAMELEON DG Creative & Design Agency

https://4ktvmag.com/4k-resolution/

In any event, the 1.9:1 is really 1.896...:1 and the UHD of 1.78 is 1.77778...:1.

In any event, it appears to me that Jeff's method at post 3 for converting full container 4K to UHD is correct.