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Media clips randomly turning black and disappearing

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Jamie JT Trent
Media clips randomly turning black and disappearing
on Oct 17, 2013 at 1:35:17 am

Resolve 10 has been turning some of the images black during the conform and also while I'm grading.

The solution has been to restart but it also happens without warning and as a result, the delivery ends up with black or missing media in random places.

What am I doing wrong here???? or is this a bug?

Could this happen if storage is reaching its limit?

The clips are still in the library but no longer linking.

Any help would be greatly appreciated

JT

JT
DOP w/ DI Colorist Suite
310-819-5023


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Paul Provost
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 2:57:31 am

I saw this when I had an Xdcam ref movie provided to me use. Blacked out random media when "add as offline" clip

http://www.4Kfinish.com | owner-colorist | Hollywood, CA
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Jamie JT Trent
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 5:27:37 am

Now that rings a bell. Problems began when I added offline clip. I have gone in and transcoded all six reels that were given to me for reference files which should take care of any corruption there.
There is also the completed movie which I will also transcode so that all non R3D clips are prores 422HQ.
There are so many variables I have had to look at in determining what the problem could be and I appreciate the feedback from this message board.

JT
DOP w/ DI Colorist Suite
310-819-5023


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Gustavo Bermudas
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 3:09:02 am

I saw this bug on projects that had "TImecode Calculated at" 23.98 instead of 24.
I'm not sure if you can change that in v10, in v9 and below you have to create a new project and do a Color Trace.


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Margus Voll
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 9:55:20 am

I see similar problem but started out in different way.

I have prores material that is shot on Alexa.

Yesterday it opened fine and and when i imported xml for edit it also worked fine.

Today after opening project up again those files show just black.

Any ideas?

--

Margus

http://iconstudios.eu
https://vimeo.com/iconstudioseu/videos

DaVinci 9, OSX 10.7.4
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro


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Margus Voll
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 10:39:14 am

OK i found my problem.

Some of the material was connected from external drive by XML.

Now that the external drive was gone of course i get black boxes.

So see your files if the path exist in media pool etc.

--

Margus

http://iconstudios.eu
https://vimeo.com/iconstudioseu/videos

DaVinci 9, OSX 10.7.4
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro


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Chad Terpstra
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 2:04:26 pm

I've run across this bug only in Resolve 10b3. All other 10 betas worked alright but when I upgraded this started happening after 5-10 minutes or so with the project open. All my media is on a connected network drive.

I can actually navigate the media pool over to the location of the missing clips and it shows the folder to be empty. The folder next to it is fine (all R3D media). Close the project, reopen, and it's back... for a while. My best guess is that it has to do with the way R10b3 deals with networked media.


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Chad Terpstra
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 2:59:29 pm

Never mind. Just rolled back to R10b1 and the same thing is happening. In a project with 500 clips all but a dozen went black. Totally random which ones stayed. Reopened and everything is back. Troubleshooting now.


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Margus Voll
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 6:02:13 pm

This ay be your problem then ?

I mean problem with network.

Do you see correct path in media pool if clip is black?

--

Margus

http://iconstudios.eu
https://vimeo.com/iconstudioseu/videos

DaVinci 9, OSX 10.7.4
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro


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Chad Terpstra
Re: Media clips randomly turning black and disappearing
on Oct 17, 2013 at 9:34:39 pm

Ok I tweaked a few things and it seems to be mostly fixed. First, I had an offline drive selected for "Cacheclip" in General Options so I set that to a connected drive. Then I set the network drive to read/write access instead of read only (It's the drive with all the R3D media only).

Now I still get some black frames but when I go to the edit tab and double click them most of them reappear. Some I have to go to the original source folder and reload that way which is a pain. This is after multiple close and reopens while troubleshooting. Not sure what's happening here but hopefully there's a fix in the next release. Seems to be random which ones go black.


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Tobias Heilmann-Schuricht
Re: Media clips randomly turning black and disappearing
on Oct 19, 2013 at 3:01:35 pm

I just had a similar problem with Quicktime media... I wasn't seeing anything in a particular folder and then suddenly all the QT media I already had in the media pool would go black...

When you start the Activity Monitor, while Resolve 10 is running, you should be seeing a process called "QTDecoder". If you are not seeing it, that process has crashed/quit and Resolve can now no longer handle Quicktime media. In any case you need to restart Resolve to restart the QTDecoder.

In my case, the "bad guy" was a h264 clip, which was in the folder I was pointing the media library to. The QTDecoder would quit, whenever I would look at that folder on the media page. It was a tedious process finding that clip. I created a new folder and moved files over, one at a time, every time refreshing the library view. The moment I placed that file in the folder an made Resolve refresh, the QTDecoder crashed.

There may be other reasons why the QTDecoder crashes, but that was the one in my case.

Perhaps that helps.

In Touch Media GmbH
Germany


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Mark Adams
Re: Media clips randomly turning black and disappearing
on Nov 15, 2013 at 10:37:44 am

Hi

I've also had issues with this. What I find is if I'm working in any form of DNX then these black clip issues don't occur.
But as with the previous post messages about QuickTime I get these black clips a lot. Sometimes I can restart and its fine, but most times the clips are lost. So I either manually match back in or export New QuickTimes from my NLE and place them on a new track over the black clip.
This is a work around but annoying.

This happens whether or not it's from a SAN or stand alone drive, Read / Write enabled or just read, full media or consolidate.

So there's obviously an issue here which I've raised with BM. I'm still on V9 and not ventured to 10 yet, but sounds like the issues still persists. Any other ideas let us know.

Cheers
M


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Ben Antonio
Re: Media clips randomly turning black and disappearing
on Dec 2, 2013 at 10:54:04 pm

I was having this same problem, but I figured out that someone had messed with the drive's folder structure. Once I reassembled it, all my clips came back when i loaded the project again.


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