Managing GoPro Fisheye & Stretched Edges

[Aleksey Tarasov]

I use a stand-alone application – Defishr. I am satisfied with the result.

[Nick Mcmahon]

Kell…. Abe Kislevitz does a great Blog on GoPro settings…. he’s officially employed by GoPro to review and I think I read somewhere he has a post grad degree in photographics so sometimes he uses language you may need to look up but he knows the cameras inside out.

https://abekislevitz.com/author/abekislevitz/

Also I have one of these Ribcage Gopro lens mount mod kits on order. This mod kit allows you to use any c or cs mount lens and really open up your gopro to get rid of fisheye distortion altogether. Not expensive especially if you do the mod yourself.

https://www.back-bone.ca/

cheers

Nick… BASE1268

3…2…1…C ya

[Kell Hymer]

[Aleksey Tarasov] “I use a stand-alone application – Defishr. I am satisfied with the result.”

Do you get any stretching at the edges?

Current System: Intel i7 4930K OC’d to 4.6 GHz| Asus P9X79 Deluxe | 32GB RAM | AMD R9-290X w/8GB RAM | OCZ Revo 480 GB PCI Express SSD | Windows 7 64 bit | Vegas Pro 12 (64)

[Kell Hymer]

[Nick McMahon] “Also I have one of these Ribcage Gopro lens mount mod kits on order. This mod kit allows you to use any c or cs mount lens and really open up your gopro to get rid of fisheye distortion altogether. Not expensive especially if you do the mod yourself.
“

Thanks Nick. That looks like an awesome product. Down the road I may do that with an extra GoPro. However, I still need to use all of the accessories, mounts, and sometimes I want the fisheye effect.

I am curious how others compensate for the stretched edges after fisheye removal. It does appear that shooting in 2.7K at 60fps will be the best bet if the lighting is good. That way I can crop as needed and I should not have bad rolling shutter problems. 2.7K just eats up data fast….especially once converted to Cineform. I think I’m going to need a pair of 6TB HDDs!

Current System: Intel i7 4930K OC’d to 4.6 GHz| Asus P9X79 Deluxe | 32GB RAM | AMD R9-290X w/8GB RAM | OCZ Revo 480 GB PCI Express SSD | Windows 7 64 bit | Vegas Pro 12 (64)

[Norman Black]

I use Medium FOV and don’t bother with removing lens distortion. It is low enough in that mode. You should not see any loss in resolution.

My biggest reason for using Medium is that Wide is just too wide. Everything gets too small unless you are right on top of it.

[Nick Mcmahon]

[Kell Hymer] “2.7K just eats up data fast….especially once converted to Cineform. I think I’m going to need a pair of 6TB HDDs!”

I just read the Hero 4 BLK has a recent update which gives it 720 @240fps… and the 2.7k @60… that sure will give you some massive files in cineform but as you say the freedom to crop out any fisheye edge distortion you don’t like.

I don’t yet have a Hero 4… I like to wait my time with new edition’s of the Gopro and let other people find the bugs instead… and the price come down.

Nick… BASE1268

3…2…1…C ya

[Danny Hays]

I just got the Hero 4 black. I experienced the same side stretch problem with Go-pro studio. So I played around with Vegas’s deform video effect. I made a real quick comparison video on the results you can see here. Sorry about the mic noise. I used a lav and held it in my hand. Didn’t want to remake it. LOL
https://youtu.be/NMX-QxlyDMg

[Danny Hays]

4K only lets you shoot in wide.

[Kell Hymer]

[Danny Hays] “I just got the Hero 4 black. I experienced the same side stretch problem with Go-pro studio. So I played around with Vegas’s deform video effect. I made a real quick comparison video on the results you can see here. Sorry about the mic noise. I used a lav and held it in my hand. Didn’t want to remake it. LOL
“

This is awesome. Thanks for posting! I converted over 12 hours of video to Cineform, most of it with GoPro’s fisheye removal checked. Have you tried cropping the GoPro fisheye removed video once in Vegas? I am curious if the effect is the same. I’d rather nor re-transcode my source material. I may try it but am curious if you have already done so.

Current System: Intel i7 4930K OC’d to 4.6 GHz| Asus P9X79 Deluxe | 32GB RAM | AMD R9-290X w/8GB RAM | OCZ Revo 480 GB PCI Express SSD | Windows 7 64 bit | Vegas Pro 12 (64)

[Danny Hays]

Sorry for the delay. Once the fisheye removal tool is applied to the videos in gopro studio, the side stretch damage is done. I don’t know how to fix that.
If you still have the originals, Here’s a start out preset for wide setting. All three, wide, med, and narrow settings on the camera have some amount of fisheye effect. The best way is to shoot a short video or even a pic of a grid with the camera exactly perpendicular to the center of the grid with the grid filling the screen, in wide, med and narrow. Then import each into Vegas and start with the preset in the pics. One pic shows what’s happening to the shape of the shot. Then use the track motion to zoom in until the black inward bow effects are cropped out. save each setting in the deform effect as wide, med and narrow.