Clips with changed video frame rate won't match to proxy

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PhotoJoseph

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Clips with changed video frame rate won't match to proxy

PostSat Jul 02, 2022 3:21 am

This bug involves Resolve 18 beta 5, and the Blackmagic Proxy Generator, and Cloud Store Mini (although that's probably not relevant).

macOS 12.4, Resolve 18b5
Database is stored in BMD Cloud

1. Footage shot 59.94
2. Media copied to Cloud Store, H.265 proxy media generated by Proxy Generator, and synced to Dropbox
3. On Mac #1, while connected to original (and proxy) media, clip changed to 29.97 in Resolve 18 b5 via Right click > Clip Attributes > Video > Video Frame Rate > change to 29.97
4. Resolve opened on Mac #2, and this media would not connect to proxy media, even when manually pointing one clip at a time to the correct proxy clip, reporting error "invalid proxy selected":
CleanShot 2022-07-01 at 19.29.20@2x.png
CleanShot 2022-07-01 at 19.29.20@2x.png (238.18 KiB) Viewed 244 times

5. Media changed back to 59.94 on Mac #2, and proxy media immediately and automatically connected
6. Media changed back to 29.97, and connection was maintained

-Joseph
https://youtube.com/photojoseph

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Peter Cave

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Re: BUG Clips with changed video frame rate won't match to p

PostSat Jul 02, 2022 4:43 am

I would expect that behaviour when the clip and proxy have differing frame rates. They do need to be the same for proxies to work correctly.
Resolve 18.0.1
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Re: BUG Clips with changed video frame rate won't match to p

PostSat Jul 02, 2022 4:45 am

Peter Cave wrote:I would expect that behaviour when the clip and proxy have differing frame rates. They do need to be the same for proxies to work correctly.
But the framerate of the base clip hasn’t changed — that’s just metadata in Resolve.


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Jim Simon

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Re: Clips with changed video frame rate won't match to proxy

PostSat Jul 02, 2022 2:13 pm

The Clip Attributes are "baked into" the Proxy, so you would have to change those before making proxies.

Which means you'll need to make the proxies from within Resolve, not using the stand alone program.
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Re: Clips with changed video frame rate won't match to proxy

PostSat Jul 02, 2022 4:17 pm

Jim Simon wrote:The Clip Attributes are "baked into" the Proxy, so you would have to change those before making proxies.

Which means you'll need to make the proxies from within Resolve, not using the stand alone program.


Fascinating… that's a bad design decision then. The proxy should identically match the source clip, not the settings in Resolve. What happens in Resolve stays in Resolve… it's just metadata.
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Steve Alexander

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Re: Clips with changed video frame rate won't match to proxy

PostSat Jul 02, 2022 4:18 pm

Jim Simon wrote:The Clip Attributes are "baked into" the Proxy, so you would have to change those before making proxies.

Which means you'll need to make the proxies from within Resolve, not using the stand alone program.


I haven't used the external proxy generator, but is there a way to tell it the target frame rate?
Resolve Studio 18.0 | Fusion Studio 18.0 | Win 11 Pro (21H2) | i9-7940x, P4000 (471.41, 8GB VRAM), 64GB RAM, M.2 boot, SSD scratch, RAID10 data | (laptop) 16" MacBook Pro M1 MAX, 32 GPU cores, 64 GB RAM, 2 TB SSD, Monterey 12.5
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Peter Cave

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Re: Clips with changed video frame rate won't match to proxy

PostSun Jul 03, 2022 1:34 am

Steve Alexander wrote:
Jim Simon wrote:The Clip Attributes are "baked into" the Proxy, so you would have to change those before making proxies.

Which means you'll need to make the proxies from within Resolve, not using the stand alone program.


I haven't used the external proxy generator, but is there a way to tell it the target frame rate?


The frame rate will match the original source media frame rate. It is not a converter.
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Re: Clips with changed video frame rate won't match to proxy

PostSun Jul 03, 2022 3:23 am

Peter Cave wrote:The frame rate will match the original source media frame rate. It is not a converter.

Hence why I think this is a bug. If the source is 59.94, then the proxy is 59.94. If I tell Resolve to play the 59.94 clip at 29.97, that has nothing to do with the Proxy file. It's just metadata. It should still link to the file.

I maintain that this is a bug.

-Joseph
https://youtube.com/photojoseph

Mac Pro (2019)
3.2 Ghz 16-core Intel Xeon W
192GB RAM
AMD Radeon Pro W5700X 16GB
Afterburner
NVMe RAID
Blackmagic Cloud Store Mini
Decklink Mini Monitor 4K
ATOMOS NEON 4K reference monitor

macOS Monterey
Resolve 18 beta

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