MacPro Mid 2010 upgraded to 12 core 3.33GHz. 24 GB ram. Radeon 5770 GPU 1024MB OS 10.12.6 Avid 2018.12.1.
Comparing DPX export times on various versions of my hour long sequence. A DPX 10 bit made from the sequence prerendered to ProResHQ linked to DNxHRHQX media takes about 6.5 hours. Same sequence relinked to camera original AVC Intra YUV 422 from a Panny Varicam35 shooting Vlog and unrendered takes around 12 hours. Today I'm doing a sans color adapters and symphony color correction export to DPX is being estimated around 6 hours. This may change by the end but that seems a lot faster than the the 12 hour version. Similar Drives but today the Grad usb 3 drive was freshly erased/formatted while the other one was using the tail end of a 20 TB drive that already had approx 14TBs on it.
The source is an OWC Dual Elite Pro USB3 and destination in both cases is a 20TB Graid. I realize a freshly formatted drive will record a basically uninterrupted sequential file. The previous export was to an already populated drive that had approx 6TB free space. I think this populated drive was not especially fragmented but I'm sure there was some of that happening.
So is the second one that's going so fast doing so because it's a fresh drive? Or could the lack of LUTs on the sources and no color correction make for the difference? 6 hours is a big difference. All the drives are into the same USB3 card. The original export that was prerendered to ProResHQ had source from fibre connected media and destination through the USB 3 card to the Graid so I get why it was much faster.
I think there would be significant speed improvement if I could keep source on fibre and destination on USB 3 card but that's not always the case.
John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net
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Posted by: John Moore <bigfish@pacbell.net>
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