[Bill Lattanzi]

Thanks, I’ve sussed it out. It turns out it wasn’t 8 that created the probem. I had opened the project in MC7 using OS Sierra… and that broke it. It crashed hard and I hadn’t opened it since. But I got a clean copy of the project and opened it directly into 8, and it was fine.
So the problem isn’t 7 to 8… its MC 7 to Sierra… never mix the two.

[Bill Lattanzi]

figured out the main problem: there are several clips that have duplicate file numbers. How best to handle? Rename all the offending clips, thus un-matching them to copies with the client? or move them to a different drive so premiere can distinguish? Any other ideas?
Bill

[Bill Lattanzi]

Hi – Okay, I figured out from another tutorial that it’s necessary to create the proxy in Create New Encoding Preset. But now I have the same problem as your previous posters. PR is reading the ingest preset as an encoding preset and will not accept. It seems maybe you customized an existing preset to get it to work…. did you rename and ‘save as’? Or how did you do it? Thanks!
Bill

[Bill Lattanzi]

Hi – I have a basic question. I’m trying to create proxies for GH4 4K footage. It’s 4096×2160. So I think I want proxies that are 1/3 the size: 1365×720. No preset in Premiere CC 2015.3 for this. So I learn I can create a custom ingest setting in AME. The instructions tell me to name it. I do so. But I see nowhere on the New Preset Menu to enter the file size setting I’m after. How do I set the file size? Thanks.
Bill

[Bill Lattanzi]

Ha! Thanks, Dan, I like a clear opinion. I think you’re right. Following Alex’s advice I found an Amira data rate chart (couldn’t find Alexa) and the data rate for 2K is 313 mbs. so with 3 layers…. sheesh… I don’t think I can ask that of even a thunderbolt drive. So… proxies it is.. now to figure that workflow! Thanks, Editors!
Bill

[Bill Lattanzi]

Hi – It’s two years later, but your dialog was so thorough and clear, I thought I’d try here. My situation is this: Professionally editing for years and years, work out of home now. I’m cutting in Premiere for the first time in Arri C 4444, and it lags, and stutters and staggers and lag. Interviews are two-camera, so that’s two video levels, plus one for Broll. If I render a section, it all runs smoothly.

Sequence is matched to the 2K Arri footage: 2048×1152, 23.976 fps. Screening at 1/2 quality. (lowering it 4o 1/4 gets it to run… but it’s nearly unwatchable, and hurts the creative process….).

The set up: your standard imac: 3.6 ghz, 24 mbRAM, Core i7. Media’s on a 4TB OWC Thunderbolt Raid 0 pair of HDDs at 7200 rpm. Renders and Previews go to a .5TB SSD. The program’s on the internal 2TB drive.

I’m beginning to think that I should just edit low-rez ‘proxies’ like the old days…

Is the CPU simply not fast enough? How fast does it have to be for the system to play multi cam interviews in real time? Am I just expecting too much? thanks!
Bill Lattanzi

[Bill Lattanzi]

Excellent, thanks, a new tool! My machine is in the shop, but on very-nearly-the-same loaner that has the same lag problem on non-rendered footage, I tested out at between 300-340 mbs write speed, and 300-380 mbs read speed from the Raid 0 thunderbolt drive with the media on it. So if the thunderbolt drive isn’t fast enough, and SSDs are prohibitive, then it seems like low-res proxy ‘off-line’ versions might be the way to go… so I guess I’m saying goodbye to that instant gratification of working with the native files, and back to the misery, delay and extra steps of transcoding. (though it does seem simpler with the new premiere conversion process at the end).

To be clear, your guess is that the limiting factor is the data rate between media drive and program?

And that if I did get SSD external drives (with Raid 0?) then everything would run real time? What kind of speed do we need to make that happen?

Would it matter at all if I added an internal SSD drive for the program? (I’m thinking of swapping out the DVD/CD drive)?

Bill

[Bill Lattanzi]

Hi -Thanks, Alex for the quick response. It’s an Intel Core i7 machine, running 24 gb of RAM at 3.4 ghz. And the OWC thunderbolt holding the Arri C 4444 media claims 442 mb/s read speed, spinning at 7200 rpm. So I think it’s pretty fast… but maybe not for the SSD 2K / 4K era?

Project is on the internal hard drive
Media is on the Raid 0 drive set.
Previews (so renders) are on a second external hard drive.

How would I measure the data rate?

thanks,
Bill

[Bill Lattanzi]

oh, ps: 24 mbs of RAM, so that’s not the issue (is it?)

[Bill Lattanzi]

I’m a quandary about this. I’m doing a project in Arri C 4444, at 2048 x 1152. PrP CC current. Once the sequence gets a few layers and a few minutes long, it lags like crazy, especially with the 2 camera interviews. I have to render constantly, and then it’s fine. I feel I’m back in the days of Avid 4.5. So I’m wondering what’s the best among these options:

a) spend a bunch of money preparing for 4K, get the latest biggest baddest iMac with an SSD drive, a newer video card (AMD 395) and hope that all problems magically disappear?

b) transcode and edit in ‘proxy’ or low-res, then go to high rez on output? This was the method that drove me to leave Avid for Premiere among other things.

c) just keep suffering.

System specs: iMac, 27″, mid-2011,3.4 ghz, 2TB HDD, AMD6970 (currently getting replaced by Apple for free as it died), media is on Raid 0 OWC Thunderbolt 4 TB drive.

Any advice would be greatly appreciated.

Regards,
Bill Lattanzi
Zi Creative, Boston