Batch Resize Question

AlS

Senior Member Location: South Africa Joined: Sep 23, 2014 18:07 Messages: 290 Offline

Solved by

Apr 18, 2015 04:47

I have found a way to resize a batch of pics before adding to a PowerDir13 project.

Steps are: Go to FILE, Export Selected Photos, Image Sizing, Resize to fit, after that you have options to to resize by Long
Edge, Width and Height, or Short Edge.

I don't understand what the Resolution Setting is - it defaults to 240 pixels/in regardless of size selected.

What Res would 1920x1080 be to import into PD13?

The reason I need it is that PDR13 gives best results when input files are as close to project size as possible. My video is HD (1920x1080 50p) My Pics are 20Mp and if added to the timeline give poor rendered results.

I thought that the higher quality input would result in better output but it's not so.

Please see this link http://forum.cyberlink.com/forum/posts/list/24696.page#199400 post By PIC on 07/05/2014 15:57:53 Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer

PIX

Senior Contributor Joined: Sep 21, 2011 00:02 Messages: 2910 Offline

Apr 18, 2015 06:20

Hello AlS,

Welcome to the PhD forum

and thank you for having a look at the image guides.

Resolution can be confusing. Pixels/inch (or cm) refers to screen displays rather than the "resolution" (px wide x px high). With photos & videos, we generally refer to the resolution of the video or photo as width x height in pixels. 1920x1080 is FullHD, 4096x2304 is 4K etc.

That pixels per inch setting ONLY matters if you're going to print the image. If you're using the photo in a video or slideshow, it's irrelevant.

If you'd like to try to understand better than I've explained, here are some useful references: http://www.photoshopessentials.com/essentials/the-72-ppi-web-resolution-myth/ and http://www.techworld.com/personal-tech/a-simple-guide-to-image-resolution-3261151/

It is generally true that importing higher resoltion photos will give better results in a video production. It's up to us (you) to decide whether photo editing software or video editing software will do a better job of downsizing your photos. The difference may be hard to detect.

In your case, with the photos destined to become part of a 1920x1080 video just resize to Long Edge > 1920 and don't worry about the ppi setting.

I hope that helps a little.

PIX PIX YouTube channel

AlS

Senior Member Location: South Africa Joined: Sep 23, 2014 18:07 Messages: 290 Offline

Apr 18, 2015 06:38

Thanks PIX,

Does this mean if I export a 20mp with 300 dpi res pic as 1920 Long Edge the output pic from PhD6 will be the same quality if the res is set to 72 (HD) or 300?

Al

This message was edited 1 time. Last update was at Apr 18. 2015 06:39

Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer

PIX

Senior Contributor Joined: Sep 21, 2011 00:02 Messages: 2910 Offline

Apr 18, 2015 16:48

Hello Al,

Yes, that is my understanding.

In a related investigation, I did some calculations here with a TV screen & PC monitor. This doesn't necessarily help with your batch resizing question, but you may be interested.

PC monitor: 1920x1080 is 20 inches wide (horizontal measurement) 1920 ÷ 20 = 96 That's 96 ppi (38.4 ppcm)

UHD TV screen: 3840x2160 is 48 inches wide 3840 ÷ 48 = 80 ppi (31.74 ppcm)

I'm not sure where that gets us, but it's moderately interesting

PIX PIX YouTube channel

AlS

Senior Member Location: South Africa Joined: Sep 23, 2014 18:07 Messages: 290 Offline

Apr 19, 2015 09:23

Thanks PIX,

Your two links explain it very well.

Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer