Vegas Pro (20) and Dynamic RAM Preview Allocation

Mark-Linenbroker wrote on 9/26/2022, 3:52 PM

I'm just going to throw this out here, there is actually quite a bit of discussion on this elsewhere. However, I was having both editing and rendering freezes when I had Vegas Dynamic RAM Preview Max set to 68% (I have 32 GB of RAM). I believe, by doing so I was actually stealing memory that Vegas needed to run efficiently, and certainly from other programs, I tried to run while waiting for the render to complete. My setting this value to 10% (I believe 5% is default) it seems to have fixed most of my issues.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

Comments

MH7 wrote on 9/26/2022, 11:34 PM

Going on a similar subject, regarding the RAM Preview, I have heard (mostly on YouTube videos), that if you set the RAM Preview usage to 0%, VEGAS Pro will manage PC RAM for RAM Preview itself (dynamically, I assume).

Last changed by MH7 on 9/26/2022, 11:38 PM, changed a total of 5 times.

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Mark-Linenbroker wrote on 9/27/2022, 12:12 AM

I've seen several people state they set the Dynamic RAM Preview to zero (0). However, when did this in Vegas Pro 20, and then tried to use the Dynamic RAM Preview, it popped up a message saying that the DRP was set to 0 and I needed to increase it to use this function.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

todd-b wrote on 9/27/2022, 12:31 AM

Going on a similar subject, regarding the RAM Preview, I have heard (mostly on YouTube videos), that if you set the RAM Preview usage to 0%, VEGAS Pro will manage PC RAM for RAM Preview itself (dynamically, I assume).

Shift +B won't work, but the caching that happens when you play over an edit point, it lags so do it again and again, and eventually it's smooth still works with Ram Preview at zero. Not sure it works less well or identically but that aspect of caching is not disabled setting DRP to zero.

The problem with setting DRP to zero is playback is affected, in a test I did where I artificially created a situation where Vegas could only barely hold on to 60fps playback with DRP set to 10%, it played back at 45fps with DRP set to zero. Rendering speed is also affected, but not by too much that it's an issue, if you needed to set DRP 0 for black flashes. Reduction in playback speed by 25% is an issue though (In the limited testing I did)

3POINT wrote on 9/27/2022, 3:37 AM

@todd-b +1

I use always default RAM settings and never use Shift+B (but Shift+M instead and only when needed). No problems with preview, render or other issues caused by too high or too low RAM settings.

andyrpsmith wrote on 9/27/2022, 5:07 AM

Dynamic RAM preview behaviour was changed/overhauled from V19 onwards. In this case the best setting as others have said above is the default 5% setting (unless you have a specific and good reason to change it. Changing it because you believe it gives Vegas more RAM to run normally is not a good reason.) for versions V18 and before then setting dynamic RAM to 0 can help with stability especially if you do not need to preview selected regions of the timeline.

Mark-Linenbroker wrote on 9/27/2022, 8:43 AM

Dynamic RAM preview behaviour was changed/overhauled from V19 onwards. In this case the best setting as others have said above is the default 5% setting (unless you have a specific and good reason to change it. Changing it because you believe it gives Vegas more RAM to run normally is not a good reason.) for versions V18 and before then setting dynamic RAM to 0 can help with stability especially if you do not need to preview selected regions of the timeline.

Thanks for the clarification. I'm going back to ALL default settings except for the Legacy HVEC (File I/O) which I uncheck. As far as lag goes for using Shift-B, I normally hit Alt-Shift-B first to delete any previous prerender and then it renders much faster. I was freezing both in edit and render (way too often) and after setting the Dynamic RAM lower (10%) those issues have gone away.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

paul-priestley wrote on 10/5/2022, 4:57 AM

Hi, I am using Vegas Pro 19 build 643. My problem is that when Dynamic Ram Preview is set to 0% rendering a 10 minute .veg file (with lots of transitions and around 24 tracks) takes one hour fifteen minutes and runs at about 3.5 frames a second, but the rendering completes every time. CPU usage is around 30% and GPU and 12-15%. If I move the Dynamic Ram to 30% rendering will run at about 10 frames a second, CPU usage is about 70-80% and GPU increases to about 15-18% but rendering will always freeze at some point before half the video is rendered. Increasing the Ram percentage increases the number of frames rendered per second proportionately, but rendering always freezes at some point using any value of RAM above 0% . Is there any settings I need to change, or idea on how to render quicker, because my system should render quicker than this I would have thought.

'Enable Legacy HEVC decoding' has been ticked and unticked but makes no difference to rendering freezing above 0% Ram.

System: Ryzen 3700x, RTX 3060, 32 GB ram 1TB SSD 4TB HD Windows 11 - 21H2

Gid wrote on 10/5/2022, 5:55 AM

@paul-priestley Hi, which render template are you using, in some templates there's two options, one with (NVENC) at the end & one without, ?

Also can you share the MediaInfo of your files, there's an App called MediaInfo, download it, it's free & a fast download with no added adverts or any of that rubbish. https://mediaarea.net/en/MediaInfo

After downloading, right click on the media file in your Windows folder, open MediaInfo, choose Text from the options at the top, Copy & paste the information in a new comment on here 👍

Like this -

 

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paul-priestley wrote on 10/5/2022, 9:37 AM

Hi,

Thanks for the response, I'm using Magix AVC/ACC MP4 using Nvidia NVENC. I have attached the info you wanted.

Cheers

j-v wrote on 10/5/2022, 9:53 AM

@paul-priestley
Can you give us a screenshot of your Help/Check for Driver Updates?

met vriendelijke groet
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Mark-Linenbroker wrote on 10/5/2022, 10:09 AM

I found the rendering to be most stable at the default 5%. I made this comment in another post, but editing/rendering became more stable after I did a Control-Shift reset at startup.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

paul-priestley wrote on 10/5/2022, 12:21 PM

Hi j-v,

I updated the Graphics driver a couple of days ago.

paul-priestley wrote on 10/5/2022, 12:23 PM

Hi Mark-Linenbroker,

I'll try the 5% recommendation and also try the Control-Shift reset. Thanks

Mark-Linenbroker wrote on 10/5/2022, 5:43 PM

I'd also suggest doing a restart of your PC to clear your GPU memory... I think a lot of the rendering issues comes down to the GPU running out of memory (I only have 8GB) which makes me wonder is there isn't a GPU memory leak in the software, since a reboot almost guarantees I won't have a rendering freeze. However, it could be some other Windows App I'm using that isn't reallocating.

Last changed by Mark-Linenbroker on 10/5/2022, 5:44 PM, changed a total of 2 times.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

paul-priestley wrote on 10/6/2022, 6:03 AM

Hi Everyone,

I have rebooted my machine, set the dynamic ram to 5% and done a control shift reset to clear the cache. It now renders three times quicker than it did with dynamic cache set to 0% but it still freezes or stops working during the render. Tried it twice and crashes at different points.

andyrpsmith wrote on 10/6/2022, 6:12 AM

Hi Everyone,

I have rebooted my machine, set the dynamic ram to 5% and done a control shift reset to clear the cache. It now renders three times quicker than it did with dynamic cache set to 0% but it still freezes or stops working during the render. Tried it twice and crashes at different points.

There must be a problem with your system somewhere as I have just finished a 13min 4K (Sony XAVC ) which due to neat Video noise reduction took 8 hours to render. I used a batch render + Shutdown script to auto close down the PC. The render template was Voukoder VBR 2 pass, bitrate 60/120. The project included a title, a few fade transitions, noise reduction on quite a few clips, a few levels filter to brighten up the mainly inside shots. DRAM was 5%.

Dexcon wrote on 10/6/2022, 6:22 AM

I was freezing both in edit and render ...

There is the possibility that one or more of your media events is corrupt or has some sort of issue causing the problem. If there is a particular point on the timeline where the freeze problem occurs, perhaps check the integrity of all the media events at or around that point.

Cameras: Sony FDR-AX100E; GoPro Hero 11 Black Creator Edition

Installed: Vegas Pro 16 Edit, Vegas Pro 17 Edit, Vegas Pro 18, Vegas Pro 19 Edit, Vegas Pro 20 Edit, HitFilm Pro 2021.3, BCC 2023, Mocha Pro 2022.5.1, Ignite Pro, NBFX TotalFX 7, Neat NR, DVD Architect 6.0, MAGIX Travel Maps, Sound Forge Pro 16, SpectraLayers Pro 9, iZotope RX10 Advanced and many other iZ plugins, Vegasaur 4.0

Windows 11

Dell Alienware Aurora 11

10th Gen Intel i9 10900KF - 10 cores (20 threads) - 3.7 to 5.3 GHz

NVIDIA GeForce RTX 2080 SUPER 8GB GDDR6 - liquid cooled

64GB RAM - Dual Channel HyperX FURY DDR4 XMP at 3200MHz

C drive: 1TB M.2 PCIe NVMe SSD

D drive: 6TB WD 7200 rpm Black HDD 3.5"

E & F drives: 2 x 2TB Barracuda HDDs 2.5"

 

Mark-Linenbroker wrote on 10/6/2022, 8:42 AM

I've experienced this anomaly of corruption in my media that was causing the rendering to freeze.

I'd suggest rendering this edit with only your CPU (don't include the NVENC option). It will render more slowly without the help of the GPU, but it might not freeze.

Next edit, include the GPU and see if you have more success.

You may also try deleting any transition effects and see if you can render with the GPU.

I suspect the developers launched a new NVENC/HVEC(?) encoder after the Vegas 19 v550 update. Because that's when it became less stable, and the freezes started happening. Hopefully, they can get the bugs worked out in future updates.

Last changed by Mark-Linenbroker on 10/6/2022, 6:18 PM, changed a total of 5 times.

Windows 11; GPU Nvidia GTX 1070

Most often edit GoPro files 1920x1080. Videos may have up to 9 tracks.

General
Complete name                            : D:\Produce\Backrow.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42)
File size                                : 153 MiB
Duration                                 : 1 min 47 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2022-06-06 00:37:55
Tagged date                              : UTC 2022-06-06 00:37:55

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4@High
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 min 47 s
Bit rate                                 : 11.8 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.190
Stream size                              : 151 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
Color range                              : Limited
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 47 s
Bit rate mode                            : Variable
Bit rate                                 : 192 kb/s
Maximum bit rate                         : 448 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.42 MiB (2%)
Language                                 : English
Encoded date                             : UTC 2022-06-06 00:38:00
Tagged date                              : UTC 2022-06-06 00:38:00
 

 

paul-priestley wrote on 10/6/2022, 11:35 AM

Interesting, I'll give that a try tomorrow. Cheers