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Considering Linux but need prores?

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Rick Turners
Considering Linux but need prores?
on Jun 6, 2013 at 12:19:52 am

Can Linux work with prores? Can it render prores?
How does one work around needing to render and ideally work in prores?


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Juan Salvo
Re: Considering Linux but need prores?
on Jun 6, 2013 at 12:58:53 am

[Rick Turners] "Can Linux work with prores? Can it render prores?
How does one work around needing to render and ideally work in prores?"


No. No. And by having a Mac. :(

Colorist | Online Editor | Post Super | VFX Artist | BD Author

http://JuanSalvo.com


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Eric Hansen
Re: Considering Linux but need prores?
on Jun 6, 2013 at 1:21:06 am

hey juan

do you export DPX and then use a Mac to do transcodes?

e

Eric Hansen
Production Workflow Designer / Consultant / Colorist / DIT
http://www.erichansen.tv


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Juan Salvo
Re: Considering Linux but need prores?
on Jun 6, 2013 at 1:52:49 am

Depends. If I can deliver to a supported codec it's not an issue. Sometimes, just work on Mac. Sometimes, just render on Mac. Sometimes render dpx and convert.

Colorist | Online Editor | Post Super | VFX Artist | BD Author

http://JuanSalvo.com


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Joakim Ziegler
Re: Considering Linux but need prores?
on Jun 6, 2013 at 6:09:30 am

We used to do this by doing play out over SDI and capturing to ProRes. This was slow and error prone, however. Now, we have a Mac with Resolve on the same 10GbE network as the Linux Resolve, mount its disks over NFS, and just either do a render on the Linux box to DPX sequences and use the Mac to render that to ProRes.

You can also theoretically open the actual projects from the Linux box database on the Mac, and just render directly, as long as you make sure your mount points are identical on both boxes.

The advantage of this is that as long as your disks and your network are properly configured, you can get much faster than realtime renders, I can render HD ProRes files from 2k files on the Linux box at more than twice realtime speed.

--
Joakim Ziegler - Postproduction Supervisor


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Rick Turners
Re: Considering Linux but need prores?
on Jun 6, 2013 at 7:01:49 am

The advantage of this is that as long as your disks and your network are properly configured, you can get much faster than realtime renders, I can render HD ProRes files from 2k files on the Linux box at more than twice realtime speed.

Wait, your rendering 2k Prores on Linux?

The problem with not having ProRes this is many clients want to do additional finishing work to the projects after color in FCP. If I hand them a DPX sequence they will say, WTF.

So for example a Canon 5D spot,

-Import XML and ProRes media into Mac Resolve
-Render DPX and Export XML From Mac Resolve
-Import DPXs from Mac Resolve into Linux Resolve, open XML in Linux
-Grade on Linux system in DPX.
-Export project from Linux Resolve
-Import project into Mac Resolve
-Render ProRes version, export XML, import into FCP.

If the .drp projects cross from Mac to Linux solidly, I guess this isn't much of an issue.

R3D workflow..

-Work in Linux using R3Ds.
-Render DPX with FCP round trip XML.
-Import DPXs and XML into Mac Resolve
-Render DPX to ProRes.
-Open in FCP.

I realize you'd be rendering R3Ds faster in Linux Resolve, but after having to then render DPX to Prores on Mac after that, is there really a speed benefit in the end?


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Joakim Ziegler
Re: Considering Linux but need prores?
on Jun 6, 2013 at 8:03:58 am

To specify, I'm rendering the ProRes files on the Mac, over the network, from files that are on the Linux box.

There's probably no speed benefit to the actual renders, but the Linux Resolve we have is vastly faster (and more stable) than the Mac system, and it's what we have in our large suite with a projector, etc.

--
Joakim Ziegler - Postproduction Supervisor


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Arno Beekman
Re: Considering Linux but need prores?
on Jun 6, 2013 at 7:37:55 am

ffmpeg can read and write prores on linux.

http://www.ffmpeg.org/ffmpeg-codecs.html#ProRes


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Toby Risk
Re: Considering Linux but need prores?
on Jun 6, 2013 at 1:52:49 pm

If mac is not an option, the Media Reactor plugin from Drastic Tech should work well on windows with adobe media encoder and some other software like quicktime, no plugin for resolve as yet though.

We use it on a Windows Version of scratch to produce prores422hq and prores 444. results are identical to a FCP generated prores

Colourist | Editor | Post-Production Consultant -- 23 years at the post-production coalface, and still loving it.


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Mike Most
Re: Considering Linux but need prores?
on Jun 6, 2013 at 3:39:07 pm

The results are identical only if you don't render on both platforms and compare them side by side. If you do that, you will see that there is a slight color shift in the open source version when compared to the Apple version. Quality wise, they're essentially the same. But don't try to cut one directly with the other.


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Dan Moran
Re: Considering Linux but need prores?
on Jun 6, 2013 at 6:56:32 pm

I'd like to think we have this setup nailed.

We have 3xMacPro's with gtx680's and 2xLinux Resolves all sharing databases.

A typical commercial or music video would go like this.

Conform from a g-raid on one of the mac systems. Render DPX to our san with 50 frame handles in source mode and use original clip name ticked with 2 levels of subfolder.

Open the project on the Linux Resolve via Database Browser and add the wrangled DPX files from the SAN.

These will fall into place on your timelines.

Grade Grade Grade.

Once the project is finished hit save.

Open it on one of the Mac systems again via the Database browser

Render your ProRes or DPX files for Flame/Smoke back onto the G-Raid Drive.

Done!

--

Dan Moran
Colourist
Smoke & Mirrors: London
http://www.danmorancolor.com/blog


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alberto fernandez
Re: Considering Linux but need prores?
on Apr 9, 2014 at 1:31:41 pm

yes you can use lightworks video editing software on linux that support apple prores.


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Rohit Gupta
Re: Considering Linux but need prores?
on Apr 9, 2014 at 2:41:45 pm

Resolve 10.1.4 update adds support for ProRes on Linux, both decode and encode.


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Juan Salvo
Re: Considering Linux but need prores?
on Apr 10, 2014 at 6:41:30 am

A million likes!

http://JuanSalvo.com
http://theColourSpace.com


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