What kind of file is it?

@Robert Johnston My settings, (I have loads of RAM so having at 50% seems to make no difference, no adverse effect on performance that is)

I know they've been working on the HEVC performance in Vegas, I wonder if this is the result because as you say I've not bothered with 8k simply because in the past I couldn't edit it easily 🤔

@RogerS

Thanks, I see it's 8K30fps HEVC at a fairly low bitrate.

@RogerS Straight from the phone so how it's created is out of my control, I think the point of this post is that in the past these same 8k phone files didn't do well in Vegas, not for me anyway, but I was surprised how well they did this time,

In the camera window I have one 8K option

& in the settings the options are greyed out & can't be changed when 8K is chosen,

I just happened to be playing with a slightly longer s23 8k clip I shot last August but am not able to play it without a proxy... maybe my machine's not up to it. It was shot off the cuff to help a singer learn a part and is about 2 minutes long, zipped to 1.4gb:

https://www.vegascreativesoftware.info/us/proxy/b5b9c66a6b92cf5c30e6/?link=https%3A//drive.google.com/file/d/1yiTtI_7ZxxI_KTIcwQhXazMtnaWpYIQM/view%3Fusp%3Dsharing

I probably won't shoot another 8k on the s23 because of it's limits. No real options at 8k but at @ 4k all 3 lenses are available and it can do up to 60p.

At best full I can't get smooth playback on my UHD 770.

Good/quarter is mostly smooth even with edits.

Glad it's working better for you- NVIDIA users seem to be getting the most out of build 187 and hevc. I look forward to see how it continues to develop.

I can't quite work out what's going on with this file. It's behaving as if it's fully cached, and yet I never see any GPU decoder when loading the file and first playing, and there is no decoder activity here, nor is there much CPU activity.

I've conformed the Gid sample file to 120fps, it's being played back at BEST/FULL, get up to 100fps, and playback doesn't degrade to unusable when blended. None of this should be true for the new decoder at least not yet, need to be bug fixed

EDIT: It's using the old HEVC GPU decoder SO4, that still doesn't explain why it's playing so well and without GPU decoder.

One note is that the 8K automatically creates a proxy file so cancel/delete it to see what it's really like.

Edit: here it is playing with the non SO4 decoder

One note is that the 8K automatically creates a proxy file so cancel/delete it to see what it's really like.

Edit: here it is playing with the non SO4 decoder

I started a new project, confirmed auto proxy was not turned on, watched GPU decoder as I brought in the file don't see any decoding, none on playback. I check again, it is as you say the new Vegas HEVC GPU decoder in use, and yet I can blend 4 tracks at once effortlessly. This should not be possible.

I'll check my 8KS23U camera footage, see if I get the same results

@RogerS This is from my phone, it's the same as @Former user 's

This is what I expect

Is it getting cached in vram? Maybe shorter vs longer clips are the difference here?

@RogerS Yeah I think so, maybe without even playing it . One of the new Vegas staff mentioned the more Vram you have the more is used to cache files, as the file was only 6 seconds it was very easy to cache it entirely

It even holds onto it's Vram cache after opening another project. I think It would be preferable to remove the cache when opening new projects

Hmm, wonder what triggers a clearout of vram. Holding it after project close may be a bug?

I probably won't shoot another 8k on the s23 because of it's limits. No real options at 8k but at @ 4k all 3 lenses are available and it can do up to 60p.

@Howard-Vigorita Agreed, you reminded me of another reason I don't use 8K 👍 I used to upload vids to YT @ FHD 1920x1080, with a better phone & PC I started to upload @ UHD (& still do), I asked my subs if they noticed the difference, the ones who replied said no not even when watched on a big screen, FHD was fine 😂, so filming & uploading in 8K is pointless, to me anyway.

I had a play with your clip, I'm a bit confused by what is happening,

Vegas help (& what I've read on here many times) about Preview needed to be selected to use proxies -

I tried it without Proxies, playback @ Good (Full-Quarter) was crap,

I tried it with Proxies, playback @ Preview (Full-Quarter) was good as expected,

But... loading the clip (proxies previously created & still in the folder) with the Preview @ Good (Full) was interesting, initially playback was poor, (it might have got better with patience or being loop played) , switching to Good (Quarter) playback was good, but the interesting thing is switching back to Good (Full) playback continued to be good 🤷‍♂️ I hadn't played the clip all the was through so I don't believe there was any Loop caching thingy going on.

This is unedited/un-cut apart from some text added.

Closing the project. (Video Encode is blank because there's no screen capture going on, it's also blank when the 8k clip is playing if there's no screen capture).

Closing Vegas

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@Former user Thanks for verifying it's not my machines. But it's probably me because I default my video prefs to automatic proxy creation Off. When I originally did the YouTube upload for the singer, I managed a rudimentary edit of the audio to enhance diction without a proxy and must have unchecked legacy-hevc because I don't remember it taking an hour to pump out each of the 3 songs we shot. Just tried a build 187 Vce render of that one piece with exp-hevc checked and it only took about 2.25 minutes. Btw, I did a copy-paste of the project back to vp20 last night so I could compare render performance but got side-tracked before I could complete it.

@Howard-Vigorita 👍

I'm not sure I understand what "with exp-hevc checked" means, & when you say "that one piece" do you mean that clip you shared?

"2.25 minutes" 😮

Out of curiousity I just rendered it with the three options in Magix HEVC/AAC render that I have.

Mainconcept HEVC

NV Encoder

& Intel QSV (I have an AMD CPU with no integrated GPU 🤷‍♂️)

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Voukoder, I don't render HEVC with Voukoder (I rarely render HEVC) so I just picked HEVC (NVIDIA NVENC) from the drop down options, the rest of the settings I presume will be at default.

@Former user

I'm not sure I understand what "with exp-hevc checked" means, & when you say "that one piece" do you mean that clip you shared?

That's on the vp21 build 187 I/O screen. If you use vp20 or vp21 build 108, it yields similar higher performance if you uncheck legacy-hevc.

Yes, I'm referring to the clip I zipped... we shot, edited, and uploaded 2 other songs that afternoon, all the same way.

Btw, the media info from the s23 says 30 fps, not 29.97. I double checked with a probe and 30 it is. Letting Vegas conform it and adjusting the render template to match seems to speed things up. Don't know what to make of PAL in the metadata.

@Howard-Vigorita Thanks, VP21 (187) my legacy-hevc is unchecked

The clip is a variable clip so i'm presuming that's why Vegas sets it at 29.97 when i drag it in.? 🤷‍♂️

I changed Vegas to 30p, pretty much the same render times as before, 2min 40secs for an 8K clip with Voukoder is alright with me though 👍

I did look into PAL vs NTSC a long time ago but either I didn't see the difference or it doesn't seem to affect me, I didn't dig deep tho 😂

I have this pic saved that doesn't really tell me anything, 🙃

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I wonder if your Intel makes a big difference, I sometimes wish I'd got Intel rather then AMD, it's like window shopping, once you see something ,, "32GB! I want that!" 😂

must have unchecked legacy-hevc because I don't remember it taking an hour to pump out each of the 3 songs we shot

That's on the vp21 build 187 I/O screen. If you use vp20 or vp21 build 108, it yields similar higher performance if you uncheck legacy-hevc

I just tried it again with Legacy HEVC checked, I got the same render times. 🤷‍♂️ (I didn't try playback of the clip)

but just as you wrote, "I probably won't shoot another 8k on the s23 because of it's limits. No real options at 8k but at @ 4k all 3 lenses are available and it can do up to 60p." so I'll prob leave 8K for another day.

@Former user I noticed that the old SO4 decoder used all my CPU cores to render the frames to the encoder which may be why you see no difference. With some HEVC formats SO4 was single threaded but not for Samsung HEVC