FORUMS: list search recent posts

Hardware specs for GoPro & Black Magic 4K

COW Forums : Avid Media Composer

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Kyler Boudreau
Hardware specs for GoPro & Black Magic 4K
on Dec 5, 2014 at 10:33:13 pm

I'm currently on a Macbook Pro quad 2.7 with an external G-Raid thunderbolt drive. This setup has worked fine for 1080p ProRes footage from cameras.

Just purchased a GoPro and will be shooting on this and a BlackMagic 4K. I need some advice on what to do with my system. I'm considering purchasing the new G-Studio 12-bay storage unit that boasts 1350MB a second, or the smaller 4-bay one that reaches 700MB/s.

Not sure what to do on the Mac side. The new Xeons aren't in the new Mac Pros yet.

I just need real world advice from someone on first, what it takes to cut H.264 4K footage from a GoPro, and then what offline method is best for 4K footage from a Black Magic.

Any advice would be appreciated. I have to make some biz purchases before year end, so kinda under the gun to make up my mind.

Thanks!!!

________________________
Kyler Boudreau
Theater Eleven Pictures
http://www.theatereleven.com


Return to posts index

Michael Cheung
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 2:09:02 am

In my opinion I'd transcode everything in Resolve to 1080p Avid DNxHD36 and depending on how much you shoot you probably won't need to change anything for the offline.

Then conform and online in Resolve.

Michael Cheung
http://filmcutter.blogspot.com


Return to posts index

Kyler Boudreau
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 4:14:53 am

Cool man. Downloading Resolve light now to check it out. Thanks!

________________________
Kyler Boudreau
Theater Eleven Pictures
http://www.theatereleven.com


Return to posts index


Michael Cheung
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 10:46:29 am

Of course things change if you want to grade yourself or edit natively. I missed the avid 4k event on Thursday in London so can't really help with that. But offlining with what you have should be no problem.

Michael Cheung
http://filmcutter.blogspot.com


Return to posts index

Michael Phillips
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 7:42:34 pm

You will still most likely be transcoding to a DNx flavor, but in the case of MC 4K, it will be a DNxHR resolution as announced at IBC this past September. I think H.264 performance will be an issue regardless of it being at 1920x1080 or UHD.

As far as GoPro, does it need to be lens corrected beforehand? There are no source side fixes for that, and you would end up using a Boris effect (if you have it) to correct for wide-angle lens distortion. You may want to create submasters for that material first.


Michael


Return to posts index

Kyler Boudreau
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 10:00:38 pm

Thanks man. Yeah, I've heard the latest updates from Avid will be including some extra stuff for cutting 2K and 4K natively.

I thought the GoPro allowed for shooting in some modes without distortion. Am I wrong on that? This is the Hero 4 Black.

________________________
Kyler Boudreau
Theater Eleven Pictures
http://www.theatereleven.com


Return to posts index


Michael Phillips
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 10:19:03 pm

http://shop.gopro.com/hero4/hero4-black/CHDHX-401.html

Seems to depend on resolution. At 4K, it is ultrawide. I also noticed that all the frame rates seem to be whole numbers and not fractional such as 23.976 and 29.97 for NTSC based countries. Another feature in 8.3 is the ability to change the frame rate to project rate resulting in a frame for frame (no need to do console commands, etc.). So if truly 24fps for example, in a 23.976 project, you can go to source setting and set it to 23.976. Any audio will be a sample rate conversion, and there is no pitch correction on source, but can be dealt with on the timeline.

One of my blogs has a spreadsheet to calcualte sample rate and semitones to retime audio and pitch:

http://24p.com/wordpress/?p=195


Michael


Return to posts index

Kyler Boudreau
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 10:29:08 pm

Michael! It's been awhile. Thanks for the link - I've saved that.

Man, I'm really trying to figure out the best workflow for 4K from a GoPro and the Black Magic card. We're planning to shoot our first feature film (God willing) at Theater Eleven Pictures next year, and we're shooting on the Black Magic, and of course, cutting on Avid.

If you have any other links and such that would rock. I'm on Avid subscription, so I can use any of the latest workflows. I'm also trying to figure out what hardware I'll need to offline edit. I don't want to finish, but I need to be able to take the files myself and make them ready for cutting. This is a low budget indie pic. I've been looking at the G-Speed stuff -- that looks promising for storage.

Good to hear from you.

- kyler boudreau

________________________
Kyler Boudreau
Theater Eleven Pictures
http://www.theatereleven.com


Return to posts index

Michael Phillips
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 11:21:05 pm

Offline editing is pretty straightforward as that will almost always entail a transcode in Media Composer for additional performance, layers, and potentially multicam etc.

I have been testing 8.3 and overall I don't see much advantage in offlining at a transcoded 4K (1t 1/4 frame for performance) as it ends up being the same storage requirements as DNxHD 36. Considerations are whether you are planning a 4K finish, or should I say "need to" finish at 4K, versus 2K, etc. that only has a play if you want to have room to re-compose a shot etc. If you shoot 4K for a 4K finish, then it falls into the usual resize type algorithm.

You can still offline at 1080 DNxHD 36, and conform back to masters at UHD. So it may end up being a wash, project type.

DNxHD 36 can play off a USB drive pretty easily as far as offline goes and you get 62 hours per 1TB of storage. If he RAID is also holding camera masters, then plan accordingly. But you will still want another set of drives or LTO to backup camera originals.

You will want to make submasters of the corrected GoPro unless you want that look - make a high quality Proes that matches your BMD sources (assuming you're shooting ProRes Film Log).

Sync in Media Composer with double system audio for quality - make a 35mm, 4 perf if you want 1/4 frame sync. I have lots of sync, and other workflow considerations on my blog at http://www.24p.com/wordpress


Michael


Return to posts index


Kyler Boudreau
Re: Hardware specs for GoPro & Black Magic 4K
on Dec 6, 2014 at 11:31:21 pm

You're a wealth of information as usual, Michael.

I will read up on your blog to try and figure out the best workflow, as some of the stuff you just said was new to me. I jumped out of editing to write, and now that the script is done, I'm prepping ahead of time for post, but the last feature I cut, dailies came on DV-CAM from the lab. LOL. Man, this stuff changes fast.

Thanks for your time!

________________________
Kyler Boudreau
Theater Eleven Pictures
http://www.theatereleven.com


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]