6K Braw Playback freezes frequently

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Thibaud

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6K Braw Playback freezes frequently

PostTue Apr 06, 2021 9:54 pm

Hello,

I've tried looking for answers for this on this forum but zero answers.

I am experiencing very poor 6K Braw playback on Resolve. UHD and 1080P Braw playback works perfectly. But specifically on 6K Braw (12:1) I get frequent hangs. I have smooth playback and then after a few seconds everything freezes and I have to wait. And then smooth... and then freeze again. the cycle repeats again and again.

Tried enabling and disabling GPU decoding for braw. Doesn't help.

Freezes seem to be triggered especially when I set IN and OUT points in the source monitor, or when I trim clips.

Do you know how I could solve it ? I never have issues with any files, but specifically those 6K braw files mess everything up.

- Project Settings (1080p / 25fps)
- Camera files 6K Braw pocket 6K Pro files / 25fps / 12:1
- i7 7820x / 32Gb RAM / RTX2080Ti
- nVidia driver 461.92 (latest)
- Resolve 17.1.1 Build9

Thanks
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Jim Simon

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Re: 6K Braw Playback freezes frequently

PostTue Apr 06, 2021 10:47 pm

Sounds like your system just can't keep up.
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Uli Plank

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Re: 6K Braw Playback freezes frequently

PostWed Apr 07, 2021 2:29 am

Which kind of media are those files stored on?

You're definitely hitting some kind of limit. The video seems to be buffered, but then not delivered fast enough.
Check your CPU and GPU activity and the speed of the storage. Normally, it's good to have both GPU and CPU decoding BRAW, it's very well balanced (at least on the Mac).
My disaster protection: export a .drp file to a physically separated storage regularly.
Please visit digitalproduction.com/author/uliplank/

Studio 19.1.3
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MacBook M1 Pro and M4 Pro mini, MacOS 14.7.5
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Thibaud

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  • Real Name: Thibaud Lepercq

Re: 6K Braw Playback freezes frequently

PostThu Apr 08, 2021 8:54 pm

Media is stored on a NAS that has a 10G link (around 400 Mbytes/s)
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Uli Plank

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Re: 6K Braw Playback freezes frequently

PostFri Apr 09, 2021 3:14 am

And what if you test a file straight from an internal disk? Then you may know the bottleneck.
When networking, it's not only throughput, but response times too!
My disaster protection: export a .drp file to a physically separated storage regularly.
Please visit digitalproduction.com/author/uliplank/

Studio 19.1.3
2017 iMac, MacOS 13.7.4, eGPU
MacBook M1 Pro and M4 Pro mini, MacOS 14.7.5
SE, USM G3

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