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Ninasargsyan
09-04-2013, 01:49 AM
Hello everyone, I'm currently working on a film and the output will be to a 2K h.264 file, I wanted to know what exactly the resolution of 2K as there is a tonne of confusion on the net. Is it 2048x1152 or 2048x1080?

Best Answer:

I've seen 2048x1156, not sure about the 1152. I don't believe it would be 2048x1080 as that only effects the aspect ratio.

Regular full HD is 1920x1080, if your 2K resolution is 2048x1080 it is the same height as regular full HD. You are only stretching it wider which would alter the aspect ratio from 16:9 to something else. In order to maintain a 16:9 ratio you would increase the each the heigh and width respectively, it won't increase pixel for pixel but both height and width will increase.

If you're submitting a digital copy to a festival you could do a pro-res 422 LT, or as a h.264 with a high constant bitrate, 12-18 should be good for a lower file size.

As far as rendering out 5K from premiere I've yet to do so, but you want to edit with the highest quality footage and the last part would be to down convert it, but if your hardware is having troubles, just render it out as 2k and cut your losses.

getting it out of premiere as lossless ProRes 422 should be the best way. I don't believe there will be a noticeable difference in the coloring, as most outlets won't support above 2K. You could save the same color preset and it should effect the footage the same.

Klay M Abele
09-04-2013, 10:10 AM
I've seen 2048x1156, not sure about the 1152. I don't believe it would be 2048x1080 as that only effects the aspect ratio.

I'd ask your distributor what their requirements are. Hope that helped.

Ninasargsyan
09-04-2013, 10:28 AM
Could you please explain the aspect ratio part in detail?

Klay M Abele
09-04-2013, 10:40 AM
Sure, regular full HD is 1920x1080, if your 2K resolution is 2048x1080 it is the same height as regular full HD. You are only stretching it wider which would alter the aspect ratio from 16:9 to something else. In order to maintain a 16:9 ratio you would increase the each the heigh and width respectively, it won't increase pixel for pixel but both height and width will increase.

Ninasargsyan
09-04-2013, 10:45 AM
Okay that explains a lot. I have two sets of footage's one from a Canon 5D mark 3 shot at 1080p 16:9, and the other from Red Epic shot at 5K 16:9. I scale both down for 2K, however, what codec and what workflow would you suggest to output this film as, my first film I exported a 1080p with h.264. What is the best for cinema and for 2K?

Anonymous Filmmaker
09-04-2013, 10:49 AM
AVI can be uncompressed, so for a film festival, etc, consider it.

Ninasargsyan
09-04-2013, 10:52 AM
Ill give AVI a try, its just I've not had the best experience with AVI so far so I'm a little skeptical. One more thing what would be the best way to render out a 5k footage from premiere.

Klay M Abele
09-04-2013, 11:03 AM
If you're submitting a digital copy to a festival you could do a pro-res 422 LT, or as a h.264 with a high constant bitrate, 12-18 should be good for a lower file size.

As far as rendering out 5K from premiere I've yet to do so, but you want to edit with the highest quality footage and the last part would be to down convert it, but if your hardware is having troubles, just render it out as 2k and cut your losses.

Ninasargsyan
09-04-2013, 11:11 AM
My one concern is rendering out that 5K footage to 2K and then bringing it back to premiere, I don't want to make my footage 2nd gen. I have another question now since this got me thinking, how much of a difference is there in the coloring of 2K and 5K? Is it very noticeable? Also what if I were to color correct my 5K, save the preset and apply it to my down scaled 2K would that affect anything? (this kinda feels like a stupid question but i'd rather get it out of the way)

Klay M Abele
09-04-2013, 11:16 AM
getting it out of premiere as lossless ProRes 422 should be the best way. I don't believe there will be a noticeable difference in the coloring, as most outlets won't support above 2K. You could save the same color preset and it should effect the footage the same.

Ninasargsyan
09-04-2013, 11:18 AM
Thanks for the help. Clarified a lot of questions.

Klay M Abele
09-04-2013, 11:21 AM
Glad to have helped!