FX LUT filter - max memory and crash render

raWer-Studio wrote on 12/3/2018, 3:48 PM

Hi, i have big project with fx LUT filter apply on video track. So when I render, vegas crash, because it reaches the critical peak of GPU RAM. It does not matter if I render over CPU, GPU, mov, mp4.... All is about LUT filter. Because when i turn off fx LUT or delete from fx video track, GPU memory does not exceed 2gb all the time when i render. Any advise. Do not look at the percentages, I render this project in parts. And it is very strange that I can not set autocalculate to TRUE, the program itself will overwrite this value to FALSE.

Comments

Kinvermark wrote on 12/3/2018, 3:59 PM

Sounds like you have done enough testing to conclude the LUT filter is the source of the problem ( I assume from your comments that there is NO render crash when the LUT fx is turned off).

Perhaps you should go one step further and see if the problem is a LUT fx setting (ie interpolation) or a specific LUT ( i.e. try some different LUTS). I have created "bad" LUTS before that Vegas didn't like.

PS where did your LUT come from? How big is it?

raWer-Studio wrote on 12/3/2018, 4:14 PM

I try free and professional pay luts. Luts .3dl .cube .mga, it does not matter :-/ I try render VBR, CBR wihout success.

Former user wrote on 12/3/2018, 6:07 PM

Try using other plugins to apply the LUT file. There are VisionColor, Magic Bullet Looks, FxHome Ignite Pro. I had a similar problem using the native LUT plugin from Vegas and solved by applying the LUT plugin from FxHome Ignite Pro.

raWer-Studio wrote on 12/4/2018, 12:11 AM

But it is very important for me to have an effect strength setting. I think this setting has only native Lut fx.

Red Prince wrote on 12/4/2018, 9:27 AM

But it is very important for me to have an effect strength setting. I think this setting has only native Lut fx.

Well, you could use two tracks with the same clip aligned above each other. Apply a LUT with some other plug-in to the top clip and set the level of the top track to whatever effect strength you want. It will be made partly transparent and combined with the track below it, the one that contains the original clip without the LUT. The result will be the same as setting the effect strength.

This, of course, is more work than just setting the effect strength in the Vegas LUT effect, but if it works without crashing, it is a reasonable workaround.

mintyslippers wrote on 4/16/2019, 11:34 AM

I can confirm the LUT plugin in VP16 is a problem. When using it, no matter the config the dedicated GPU memory usage just goes up and up until crash.

Even just having the LUT plugin on the timeline, with no LUT file actually loaded I can see the memory just going up and up.

I have logged a support request with Magix. Hopefully it will be fixed as LUT is a pretty important tool. I can use Magic bullet to load the LUT no problem but rendering is around 3x slower.

Eagle Six wrote on 4/16/2019, 12:49 PM

I can confirm the LUT plugin in VP16 is a problem. When using it, no matter the config the dedicated GPU memory usage just goes up and up until crash.

Even just having the LUT plugin on the timeline, with no LUT file actually loaded I can see the memory just going up and up.

I have logged a support request with Magix. Hopefully it will be fixed as LUT is a pretty important tool. I can use Magic bullet to load the LUT no problem but rendering is around 3x slower.

@mintyslippers perhaps this is a GPU card and/or driver thing. I cannot replicate your stated issue, VP16 build 361, AMD R9 390/8gb. VEGAS Lut FX uses about 77% of GPU memory and stays steady throughout render.

@raWer-Studio have your turned 'off' GPU acceleration of video processing in the Video tab/Preferences? Does that makes a difference (other than taking longer to render)?

mintyslippers wrote on 4/16/2019, 12:54 PM

Hmm. I have an Nvidia RTX 2060 with 419.67 CRD drivers.

If I just place a video file. Any file and add the LUT filter to the track and render I can see the GPU memory going up and up. This is with no cube file loaded. Load one and the results are the same.

Same test using Magic bullet to load the file and all is well.

Eagle Six wrote on 4/16/2019, 1:16 PM

@mintyslippers maybe this is why some are delighted with the VEGAS Lut FX, like myself, and others like you are scorning it. For me I have found most LUTs to be to heavy and need to be dialed back, so I found I had to make adjustments to take a LUT back down when using Color Vision. One of the reasons I went to DaVinci Resolve for more control. Since then I have found using BCM in Resolve I don't even need the LUT for Log footage and get much better results. With the VEGS Lut FX having the ability to dial the LUT effect down, it makes Vegas Pro 16 usable, at least for me that is what I have found.

mintyslippers wrote on 4/16/2019, 1:31 PM

It has been great. rock solid so far and not a single crash. VP12 kept doing something where the audio would play but the visual would be frozen.

I didnt even notice a LUT problem on my sub 10 minute projects as it would just about get done before it hit the 6GB limit of my card. but then I rendered a longer one and had a crash. Checked perf mon and there it was, a slow and steady mountain climb as I render which would only go back down upon closing vegas.

I only noticed as I was previously using Magic Bullet for all my grading but wanted to do it natively in vegas as it really is 3x faster at rendering. I had the look, all was good and then the bug showed its head.

Greg-Kintz wrote on 4/16/2019, 10:13 PM

I've had this issue as well with version 16. If it's a shorter clip with the LUT filter, it might make it.

But with longer content lengths (1/2 hr or more) .. then it's a sure to crash unless I ditch the LUT plugin.

GerY wrote on 4/16/2019, 11:23 PM

For me the same problem now only cuts it in two parts to render

mintyslippers wrote on 4/17/2019, 2:16 AM

Make sure you all log the fault with magix https://support2.magix.com/customer/en/vegas/form

mintyslippers wrote on 4/17/2019, 4:32 PM

Reply from support;

Hello

Thank you for your message.

This is a known issue which will be resolved in a future application update. Thank you for reporting this issue.
--
Thank you for contacting Magix Support.

HustlerGuy wrote on 4/24/2019, 8:27 AM

Reply from support;

Hello

Thank you for your message.

This is a known issue which will be resolved in a future application update. Thank you for reporting this issue.
--
Thank you for contacting Magix Support.

Seriously I need to work with LUTs. I need color effects for my work. Every time I render, it would render half portion of the clip and the rest of the video would render as freezed. So frustrating. :(