MP 7,1 2020 iMac 27 playback Canon R5 4K H265 footage better than Mac Pro 2019?

[zhpenn]

I am using 28 Cores Mac Pro + 5700XT + 580x to play Canon R5 4k H265 footage in DaVinci Studio, without pre-render it will be very laggy when playing back, in QuickTime as well.
Mac Pro using VEGA II also have the same issue. But some saids iMac 27 can do a better job on this task.

Why is this happen? Is there any hardware part that can upgrade for better playback quality?
Will it improve this by adding the new 6900XT to Mac Pro?

 

[h9826790]

I am using 28 Cores Mac Pro + 5700XT + 580x to play Canon R5 4k H265 footage in DaVinci Studio, without pre-render it will be very laggy when playing back, in QuickTime as well.
Mac Pro using VEGA II also have the same issue. But some saids iMac 27 can do a better job on this task.

Why is this happen? Is there any hardware part that can upgrade for better playback quality?
Will it improve this by adding the new 6900XT to Mac Pro?

Sounds like HWAccel issue.

iMac use QuickSync, 580X / Vega use AMD UVD, 5700XT use AMD VCN.

All of them are different systems (which handled by macOS automatically).

And no, there is nothing you can do on the 7,1. And there is no way to use QuickSync on the 7,1 yet.

All you can do is just to contact Apple and Black Magic to let them know this issue, and let them work on it.

 

[bsbeamer]

Since the pandemic started, I've been doing most of my work on an iMac19,1 with Vega. Have an RX5700XT eGPU when needing additional GPU support, or for MBP16,1 use.

Was recently sent lots of 4K H265 footage (not R5) and both the iMac and MBP handle it like a champ using Adobe software. It's mostly the CPU that makes the difference here, not the GPU. Unless you're stacking effects that are hardware accelerated, then the GPU will kick in/assist.

I'd actually suggest you batch decode/convert your footage to a ProRes format and work with it that way for MP7,1. It honestly is a more pleasant user experience.

 

[OkiRun]

Since the pandemic started, I've been doing most of my work on an iMac19,1 with Vega. Have an RX5700XT eGPU when needing additional GPU support, or for MBP16,1 use.

Was recently sent lots of 4K H265 footage (not R5) and both the iMac and MBP handle it like a champ using Adobe software. It's mostly the CPU that makes the difference here, not the GPU. Unless you're stacking effects that are hardware accelerated, then the GPU will kick in/assist.

I'd actually suggest you batch decode/convert your footage to a ProRes format and work with it that way for MP7,1. It honestly is a more pleasant user experience.

You mean in a way that the 7,1 was optimized for??