Port Cube

Post by **Bullwinkle** » Wed Aug 24, 2022 12:39 pm

DGSplit.

Or open in DGIndexNV, set project range, enable video in Demux menu, and Save project. Upload the resulting hevc file.

Britney · Post by **Britney** » Wed Aug 24, 2022 12:42 pm

You should be kinder to your new members.

mwittmann · Post by **mwittmann** » Wed Aug 24, 2022 12:44 pm

I was looking for this solution! I will upload the original in a few hours. Sorry for the inconveniences caused.

Post by **Rocky** » Wed Aug 24, 2022 12:45 pm

That's great. Can you do FTP? I ask because that download site is dreadfully slow. BTW, 50 MB should be fine.

And they also make you wait some ridiculous amount of time between downloads.

mwittmann, if you want to work on the bleeding edge with us, you have to get away from these download sites. I have a perfectly good fast FTP server. Can you use it?

Britney · Post by **Britney** » Wed Aug 24, 2022 12:59 pm

That's a little better. Keep at it. Kisses, Brit.

Post by **Sherman** » Wed Aug 24, 2022 1:04 pm

If it took more than 10 minutes to download 112MB, I'd have already lost interest and moved on to something else. Kids have really short attention spans these days. Balti was telling me you shouldn't expect more than 6 seconds focused attention with modern youth. That has an upside and a downside, but mostly down.

Philco 38-12 arrives tomorrow! An early superhet.

https://www.radiomuseum.org/r/philco_38_12.html

She's a beaut!

Wonder Woman · Post by **Wonder Woman** » Wed Aug 24, 2022 1:05 pm

Only 7 minutes to go. I'm on it guys. Dudley, are you ready?

Post by **Rocky** » Wed Aug 24, 2022 1:22 pm

46 minutes until next download. Whee!

mwittmann · Post by **mwittmann** » Wed Aug 24, 2022 1:41 pm

This time I sent the original. It was really easy to demux the selected frames with DGIndexNV.

Post by **Rocky** » Wed Aug 24, 2022 2:05 pm

Thank you. I will be sure to take into account your scenario as we develop a solution to the problem of processing YUV source. Your report and materials are greatly appreciated.

Is that good, Brit?

Britney · Post by **Britney** » Wed Aug 24, 2022 2:06 pm

Perfect.

Post by **Rocky** » Thu Aug 25, 2022 11:52 am

My current plan is now this. We will have 3 parameters (2 is not enough):

source is full or limited
cube lut is full or limited
desired output is full or limited

They will be required parameters, i.e., no defaults. When users go wrong I wanna be able to blame it on them.

So that is 8 possibilities. We also have either YUV or RGB input/output, so we're up to 16 possibilities. Please don't ask for the input and output to be different YUV and RGB. That would be 64 possibilities and I don't wanna do that.

I have already worked out the equations needed for each of the 16 cases. Note that I could collapse it to 2 parameters and 8 cases if we assume the input and output have the same range. But it's easy to keep it at 16 and give that flexibility. Not so easy to change YUV<->RGB due to Avisynth pixel-type considerations. I could do it, just don't wanna.

If y'all agree that this will cover your desired uses, I'll start coding and testing.

BTW, AFAICT, AVSCube() = timecube assumes the LUT is full range and has 1 parameter called fullrange to say if the input/output is full or limited. That does not allow for a limited range LUT.

EDIT: Sherman told me the 38-12 radio just arrived so I'll be on my own for this.

tormento · Post by **tormento** » Thu Aug 25, 2022 1:36 pm

Rocky wrote: ↑
Thu Aug 25, 2022 11:52 am
If y'all agree that this will cover your desired uses, I'll start coding and testing.

Seems fine to my innocent eyes.

I don't know if DGCube is internally "multithreaded" (I don't know how it's called for CUDA).

In that case, would be possible to have a threads parameter to adapt to slower, with less memory, and faster cards?

Post by **Rocky** » Thu Aug 25, 2022 2:02 pm

There's no multithreading. The time is so overwhelmingly dominated by the PCIe transfers that it's pointless to even think about trying to do anything in that regard. E.g., we decide to do 2 frames at a time. Theoretically the kernel processing of the first frame could be overlapped with the upload of the second frame. But the gain would be very small and it would require twice the GPU memory.

One thing we could do is integrate it into DGSource(). That would eliminate two full frame transfers with no increase in memory on the GPU:

not integrated:

compressed data -> GPU -> decode -> CPU -> Avisynth -> GPU -> cube -> CPU -> Avisynth

integrated:

compressed data -> GPU -> decode -> cube -> CPU -> Avisynth

So, yeah, it would be way faster. Let's get it working first as a standalone filter and then think about that. Thanks for provoking thought about it.

tormento · Post by **tormento** » Thu Aug 25, 2022 2:18 pm

Rocky wrote: ↑
Thu Aug 25, 2022 2:02 pm
One thing we could do is integrate it into DGSource(). That would eliminate two full frame transfers

Believe it or not, I was having dinner and thinking about that. I sat to my PC and I was replying with that idea in mind. Then I read your post and I smiled. Great minds think alike.

Rocky wrote: ↑
Thu Aug 25, 2022 2:02 pm
Thanks for provoking thought about it.

Another idea, in future and with proper OS integration, is to use DirectStorage, if possible.

https://docs.nvidia.com/gpudirect-storage/index.html

Curly · Post by **Curly** » Thu Aug 25, 2022 2:24 pm

tormento wrote: ↑
Thu Aug 25, 2022 2:18 pm
Great minds think alike.

For sure. And when you start thinking like me you'll really be getting somewhere.

tormento · Post by **tormento** » Thu Aug 25, 2022 2:25 pm

Curly wrote: ↑
Thu Aug 25, 2022 2:24 pm
And when you start thinking like me you'll really be getting somewhere.

Post by **Rocky** » Thu Aug 25, 2022 2:27 pm

DirectStorage

Remains to be seen if there is any there there. We'll see.

Curly · Post by **Curly** » Thu Aug 25, 2022 2:43 pm

tormento wrote: ↑
Thu Aug 25, 2022 2:25 pm

Might have to think about approving you.

Post by **Rocky** » Thu Aug 25, 2022 2:48 pm

Curly, please approve me too.

No matter what, data must traverse PCIe, so I'm not clear on how "DirectStorage" is going to help. DMA requires access to the CPU bus. Could be I'm confused, keeping an open mind.

Curly · Post by **Curly** » Thu Aug 25, 2022 2:51 pm

Ya gotta earn it. Like big t. What's left, Boris Approved?

Post by **Sherman** » Thu Aug 25, 2022 2:55 pm

38-12: Gonna pull the chassis right now, guys. Standby...

Post by **Natasha** » Thu Aug 25, 2022 2:56 pm

Can't wait. Be careful, electricity can kill.

Post by **Sherman** » Thu Aug 25, 2022 3:01 pm

Like, if I got Curly Approved, and I didn't want that, what is my recourse?

Curly · Post by **Curly** » Thu Aug 25, 2022 3:02 pm

No danger of that, kid. Grow up.