Render Time very Slow

Hello,
I am brand new to Black Magic/Da Vinci Resolve.
I have a small 7 min video that I rendered, but it took 7 mins.
Is rendering supposed to take as long as the video length?

Thanks in Advance,
Dale

Hello,
I am brand new to Black Magic/Da Vinci Resolve.
I have a small 7 min video that I rendered, but it took 7 mins.
Is rendering supposed to take as long as the video length?

Thanks in Advance,
Dale

What kind of computer do you have (CPU, GPU, RAM, SSD)
What is the source codec and resolution.
What is the delivery codec and resolution.
How many effects...
Which version of Resolve do you use, Free or Studio.

Hi there!

What kind of computer do you have (CPU, GPU, RAM, SSD) i7-8650U CPU @ 1.90GHz 2.11 Ghz
What is the source codec and resolution. H.264 1920x1080 HD
What is the delivery codec and resolution. I'm not sure
How many effects... NONE
Which version of Resolve do you use, Free or Studio. FREE 16 Beta

Typically, is the render time supposed to equal the time of the video itself?
Thanks!

[Peter Chamberlain]

If you had the Studio version and a GPU that decodes and encodes h.264 it would be dramatically faster.

Thanks Peter,

So what I hear you saying is that with the Free version and my current computer specs, it will export out at a similar rate to the length of the video.

Thanks for your reply!

You think you're render time is really slow? I tried to render a 18 minute video and it took almost 9 hours! Is this bad? Right now, I've been rendering a 40 min video, and its run over the last 2 days and has 2 hours left.

When I first downloaded DaVinci I could render a 30min video in 15 minutes or so, Now all of a sudden as like 2 months ago all my videos take 4-8 times longer to render than the actual video recording, I have no effects, an i7-7700k and a 1080ti with 16gb of ram, I doubt it's my PC because it used to work fine. Did Blackmagic throttle the rendering for the free version?

Render to what format? What resolution?

Even using the software (CPU-based) rendering my system is at least "realtime" when rendering to H264 and with the GPU enabled on the Studio version I'm rendering at 150-200FPS for a simple project and rarely gets below 50-60FPS even with heavy grading and multiple video tracks.

What is the CPU utilization while you're rendering?

Is rendering supposed to take as long as the video length?

There is no "supposed to" on this one. There are many variables that affect render speeds.

1. Media format
2. Media Specs
3. Timelime specs
4. Render specs
5. Effects used
6. Color work
7. Hardware
8. Drivers
9. Resolve version
10. Settings in Resolve

Probably more...

When I first downloaded DaVinci I could render a 30min video in 15 minutes or so, Now all of a sudden as like 2 months ago all my videos take 4-8 times longer to render than the actual video recording, I have no effects, an i7-7700k and a 1080ti with 16gb of ram, I doubt it's my PC because it used to work fine. Did Blackmagic throttle the rendering for the free version?

Seriously with a 1080 Ti around 100fps for exporting 4K H265/H264 colorgraded video (NVIDIA) are pretty much standard with the Studio version though.

Even my humble Radeon 580 is much faster than what you describe.

same problem, if not worse: I am currently rendering a 1 minute clip, 1080p/24fps from a gopro, it took me 35 minutes to do it. I have a 2019 mac mini, and 64gb RAM, I have tried to adjust everything, still have no luck, oh, by the way, the clip in timeline is really lagging as well.

It is to be expected that the Mac mini is very slow without an eGPU.
Resolve is all about the GPU, not that much about RAM (which helps with Fusion).

I'm now having this issue. I have made these types of videos many times and that have generally took about 20-30 minutes to render. As you can now see in this attached screenshot, this one is set to take over a day?! And this is for a 4 minute video. I'm using a Macbook Pro Version 12.6.8 on MacOS Monterey.

Can someone help me out?

What' your source, codec. resolution and which hardware does your MacBook have?

What' your source, codec. resolution and which hardware does your MacBook have?

Still new to the language, but I think I'm getting this right below and hopefully the screenshot here helps...

I'm not sure on the source and what you're referring to there, but the codec. that I'm trying to (and have always) render in is H.265.

The resolution for the project and for the render is 1929 x 1080 HD

Here below is the hardware for my macbook. I hope this is what you need?

Hardware Overview:

Model Name: MacBook Pro
Model Identifier: MacBookPro11,4
Processor Name: Quad-Core Intel Core i7
Processor Speed: 2.2 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Hyper-Threading Technology: Enabled
Memory: 16 GB
System Firmware Version: 481.0.0.0.0
OS Loader Version: 540.120.3~22
SMC Version (system): 2.29f24

Sorry for the bad news, but your MacBook Pro is too old for H.265.
Get a new one or transcode your footage to ProRes. Even then, you won't get far with the Radeon R9 M370X, which is a very weak GPU compared to modern ones. But it should be OK for some editing and light grading in HD. Using an older version of DR might help too, try version 15.

Sorry for the bad news, but your MacBook Pro is too old for H.265.
Get a new one or transcode your footage to ProRes. Even then, you won't get far with the Radeon R9 M370X, which is a very weak GPU compared to modern ones. But it should be OK for some editing and light grading in HD. Using an older version of DR might help too, try version 15.

But it was working and rendering in H.265 just fine for the last 2 months all the way up until Sunday. Just wondering what changed? I have now changed everything to ProRes 244 LT in Project settings and the entire program is still not working properly. Will be trying the DR 15 method here in just a bit and will get back to you.

Sorry for the bad news, but your MacBook Pro is too old for H.265.

But it was working and rendering in H.265 just fine for the last 2 months all the way up until Sunday. Just wondering what changed? I have now changed everything to ProRes 244 LT in Project settings and the entire program is still not working properly. Will be trying the DR 15 method here in just a bit and will get back to you.

Is there a benchmark you can run to assess if your computer it'self is still running fine, unrelated to Resolve?
Or maybe look at temperature sensors, disk speeds etc. Something to check the health of your computer. If you can rule any system wide problem, then potentially you could get 18.5 working again. You mention going back to DR 15, and that may work but still be hiding the problem that resulted in 18.5 suddenly becoming a snail which could be 18.5 degrading/corrupting, a hardware/driver problem etc.

Could it be that you are not using the discrete GPU?
I remember there was a setting to save energy on those laptops.

Sorry for the bad news, but your MacBook Pro is too old for H.265.

But it was working and rendering in H.265 just fine for the last 2 months all the way up until Sunday. Just wondering what changed? I have now changed everything to ProRes 244 LT in Project settings and the entire program is still not working properly. Will be trying the DR 15 method here in just a bit and will get back to you.

Is there a benchmark you can run to assess if your computer it'self is still running fine, unrelated to Resolve?
Or maybe look at temperature sensors, disk speeds etc. Something to check the health of your computer. If you can rule any system wide problem, then potentially you could get 18.5 working again. You mention going back to DR 15, and that may work but still be hiding the problem that resulted in 18.5 suddenly becoming a snail which could be 18.5 degrading/corrupting, a hardware/driver problem etc.

I downloaded DR 15 and it worked okay, but the only problem with it is that I need DR to be able to keyframe on Text+ titles and DR 15 isn't able to from what I see. That's literally the only thing I need. I downloaded DR 16 and it's able to keyframe on Text+ titles so I am going to give this a shot even though it has already froze and shut down on me once.

I am also going to run a First Aid report on my Macintosh HD drive and hopefully it will tell me if there was a problem within the drive created when running DR 18.5 beta previously. Will report back in a bit.

Could it be that you are not using the discrete GPU?
I remember there was a setting to save energy on those laptops.

Working on trying to find out how to do this. Just found an article that will hopefully tell me where in DR I can change this setting. But I think it might have already been set to do so? This attached is what I'm seeing in the current settings in DR 16.

You are currently using only the iGPU, which is very slow.
The setting for the discrete one is not in DR, but in your system settings. I don't have on old MBP around, so I can't show you.

Is there a benchmark you can run to assess if your computer it'self is still running fine, unrelated to Resolve?
Or maybe look at temperature sensors, disk speeds etc. Something to check the health of your computer. If you can rule any system wide problem, then potentially you could get 18.5 working again. You mention going back to DR 15, and that may work but still be hiding the problem that resulted in 18.5 suddenly becoming a snail which could be 18.5 degrading/corrupting, a hardware/driver problem etc.[/quote]

I downloaded DR 15 and it worked okay, but the only problem with it is that I need DR to be able to keyframe on Text+ titles and DR 15 isn't able to from what I see. That's literally the only thing I need. I downloaded DR 16 and it's able to keyframe on Text+ titles so I am going to give this a shot even though it has already froze and shut down on me once.

I am also going to run a First Aid report on my Macintosh HD drive and hopefully it will tell me if there was a problem within the drive created when running DR 18.5 beta previously. Will report back in a bit.[/quote]

Ran the First Aid on my drive/disc on my computer and everything is coming back as good, I think. This is a snapshot of what I'm getting back.

You are currently using only the iGPU, which is very slow.
The setting for the discrete one is not in DR, but in your system settings. I don't have on old MBP around, so I can't show you.

Hey Uli,

I tried to make that switch and apparently on this computer I don't have the option to do so? Here is a screenshot of that screen where, as I'm reading online, is where that option would be located on my computer.

Wanted to ask about something since I keep seeing this on BlackMagic's page... are there adapters/converters that I can download to help out with this problem that I'm having? And additionally, is there some kind of external graphics cards or eGPU's that I could get for my type of computer that would help out with the issues that I am having?

Your old 2015 Macbook doesn't have a discrete GPU, Jimmy, it only has the integrated Intel Iris 5200 Pro graphics processor. Instead of looking for an adapter or eGPU or some such, you might want to consider replacing the laptop altogether.

Second that. A MB Air M2 15" with 16 GB RAM would surprise you with its speed.

I am having the same problem with MacBook Pro m1 16GB ram, SSDs. It is prohibitively slow in v19b. I'm using mixed media (braw and h264), mixed frame rates (50 and 25). I haven't experienced this slowness before...

I am having the same problem with MacBook Pro m1 16GB ram, SSDs. It is prohibitively slow in v19b. I'm using mixed media (braw and h264), mixed frame rates (50 and 25). I haven't experienced this slowness before...

We've been telling people for awhile that 32GB is a minimum, but not everybody agrees. I think mixing H.264, Raw, 24fps, and 25fps is kind of a "worst case scenario" for a trainwreck in workflow.

If you don’t use other demanding effects, which method is chosen for retiming?
And why don’t you use 18.6.6? You can check with the Activity Monitor if your RAM is tight.