Sections of TL black, using nested project

Former user wrote on 7/14/2017, 3:57 PM

 

 

I'm wondering if anyone has experienced this before   ... 

 

Using VP14 latest version, Hardware acceleration is off.

 

After rendering out to h264 MC  I noticed that some sections of video on the TL were just black.  Initially I thought I had accidentally muted some events, then I checked the output file and about the first third was ok, the rest no video, black.

 

I have over an hour of very simple uncompressed 720x576 25fps .avi uncompressed material. No fx to talk of.

 

I had already rendered out successfully 5 sections/pieces earlier from this project, same source, (without the nested project added in though) and was now doing the complete video, with a piece of nested project added into the start.

 

This is the first project I've done where about the first 30 minutes is inserted at the start as a nested project.  I'm seriously impressed of course with this feature, except maybe its the cause of the issue?

 

I managed to render it out again, rebooted, as previously, before rendering and output was ok this time, but as I checked the TL before closing VP I noticed small pieces were black, checked memory usage now only 22%, closed VP14.  So the render was ok this time but afterwards the TL had some black sections, but didn't transfer to the output as previously.

 

My initial thoughts on this is that the nested project is using too much memory for what I have, 16GB?

 

I'm now rendering the full piece again to a blue ray iso file after rebooting and used shift/ctrl to reset to default and also clear cache.

 

The problem is that checking a rendered video clip is easy, load into vegas and drag along to check for any problems, in this case black sections, its not so easy to check if the .iso has an issue!

 

 

Motherboard .. MAXIMUS VII RANGER.  Z97 Express chipset. 4th and 5th. generation intel.  Supports 6 x 6GB/s SATA ports.

CPU .. Haswell Core i7-4790K. (Intel® HD Graphics 4600) socket FCLGA1150

Memory .. Corsair DDR3 16GB.  Vengeance Pro Black DDR3 1866MHz CL9.

Graphics card .. Nvidia GTX 850 Gainward Phantom 3GB.

MSI GTX 1080 Z

CPU cooling .. Corsair H80i.

Case .. Corsair Graphite 760T, white.

Power supply .. Corsair HX750i. 750 watt.

Samsung SSD 840 series, 250GB.

Samsung SSD 850 series, 500GB.

Seagate HD ST3000DM001-1CH166 3 TB.

Seagate HD ST8000AS0002-1NA17Z 8TB

Comments

Grazie wrote on 7/14/2017, 4:45 PM

Check you haven't got gaps in the Veg you've nested. I've done that before. I also ended up with black on the Timeline.

Last changed by Grazie on 7/14/2017, 4:45 PM, changed a total of 1 times.

Grazie

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Kinvermark wrote on 7/14/2017, 5:15 PM

I have a vague recollection of this having to do with the previews (proxies) that Vegas renders for nested projects. Try deleting the sfvp0 & sfap0 files for the nested items to see if they regenerate properly.

Former user wrote on 7/14/2017, 8:13 PM

Grazie ... No gaps, it was weird, when I put a marker on the spot where it was black, a small section, then went looking for some more, which I found, the black section changed to new position and the one marked was now ok😩

Kinvermark ... I rendered out again to blue-ray iso (after clearing cache and set defaults) and found no more black sections by playing along the complete TL after the render, so I assume that the iso is ok, played disc ok. Previously when the timeline had the black section, a very large part, so had the .mp4 render.

Perhaps the reset fixed it?

 

john_dennis wrote on 7/14/2017, 9:45 PM

"... in this case black sections, its not so easy to check if the .iso has an issue!"

Actually, it is fairly easy to check an .iso if you have a way to mount it as a virtual Blu-ray drive. You can copy the files out of the .iso and manipulate the copies any way you wish.

Former user wrote on 7/15/2017, 3:23 AM

"... in this case black sections, its not so easy to check if the .iso has an issue!"

Actually, it is fairly easy to check an .iso if you have a way to mount it as a virtual Blu-ray drive. You can copy the files out of the .iso and manipulate the copies any way you wish.

Very good, forgot about that option, thanks.

Former user wrote on 7/15/2017, 7:29 AM

I mounted the iso using Win 10, right click, then select mount. The file was ok then when checked out, thanks John, very useful.

This project just crashed twice within a short time after loading, even before attempting a render.

I'm attempting to make archive imx50.mxf file now, fingers crossed. Its been quite a while since so many crashes, I'd say it's something to do with the nesting.

Just a tip, if like me the "mount" option wasn't there initially (Nero was using it) in Win 10 this link sorts it.

http://www.intowindows.com/fix-mount-option-missing-from-context-menu-in-windows-10/

 

Former user wrote on 7/22/2017, 5:40 AM

Just an update, the reset didn't fix it. I'm on another but similar project and after adding a second nested piece the issue has returned. One video clip of 6 shows up black for full length.

If I close vp and reopen most times its ok and I can work all day.

 

Former user wrote on 7/31/2017, 6:39 AM

Black timeline issue, update ...

 

Just a small bit of extra info. on this issue, not a solution.

 

1)

What triggers it is switching from Vegas pro to another task.

Upon coming back to Vegas the preview still shows an image but disappears as soon as you move the cursor, the track then remains black.  Close and restart Vegas and work all day as long as you don't switch out.

2)

I've established that its mostly the very large, uncompressed .Avi, (mpeg) track that goes black, but I have also had the imported veg affected also.  I've had the same issue with different projects, different source material.  The last time I did a test, I loaded up 1 avi file and 1 veg nested project, this time it took a few times switching to bring up the problem, the nested project went black.  When I closed, exited, vegas crashed, prompted to send info. which I did.

3)

I tested the problem projects on a laptop using a portable drive, and similar issue as when using PC and projects/files on internal HD.  So its not machine specific.

4)

The large files .avi RGBA, I read somewhere, that for compositing they should be on the top track, which they weren't on. I put it on the top track, same problem.

5)

Without the addition of nested projects into the project, the issue doesn't arise.

dlion wrote on 8/2/2017, 8:26 AM

I would render each project to mxf, then make a master project with the mxfs and render that…

Former user wrote on 8/2/2017, 1:18 PM

Thanks for that dlion, it's an option all right. Thing is i'm having issues with mxf also, see ...

https://www.vegascreativesoftware.info/us/forum/imx50-combing-issue--107406/

dlion wrote on 8/5/2017, 5:30 PM

Then try cineform

Former user wrote on 8/5/2017, 7:07 PM

I was thinking of that, I never used it, when I select it in vegas it says it needs codec or similar. Is it free or paid?