Black screen detection

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willbettsmusic

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Black screen detection

PostWed Apr 17, 2024 11:21 am

I edit video podcasts up to 90 mins long on a fast turnaround. I recently disabled a clip and forgot to enable it again before rendering. Is there a function to find moments on the timeline when there's no clip enabled? Or is there a function that detects only black screens? I've considered using Scene Cut Detection on the rendered version, but if I still have to check each edit manually, it won't really save me any time. I know it sounds lazy, but if there's a final check I can do for this issue, then it would save me a decent amount of time before sending it off to the VFX person (I send it in ProRes LT).
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Jim Simon

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Re: Black screen detection

PostWed Apr 17, 2024 11:03 pm

willbettsmusic wrote: if there's a final check I can do for this issue...
Only one I know is manually.
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carsonjones

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Re: Black screen detection

PostWed Apr 17, 2024 11:28 pm

I use Mononodes Utility DCTLs (paid). The Clipping DCTL can be applied at the timline and activated to show any / all of the following - Black / White / 75 Saturation / 100 Saturation. In this case if you wanted to check for blanking / black frames you could set it to black, then activate it at the timeline level. In Resolve's Lightbox right-click and choose 'Update All Thumbnails'. You'll then get a birds eye view of your timeline and should be able to pick up on any blanking / black frames. You can also do this with skintone accross your timeline, etc. It's a great workflow.

https://mononodes.com/utility-dctl/

There may be other DCTL options out there that are free that I haven't come across. Others may share them here.
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Andy Mees

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Re: Black screen detection

PostWed Apr 17, 2024 11:29 pm

willbettsmusic wrote:Is there a function to find moments on the timeline when there's no clip enabled?
Not as such... but you could use Timeline menu > Clean Up Video Tracks > Flatten Unused Clips* to removed disabled clips, and then Playback menu > Previous/Next > Gap to find any gaps. *Be sure to duplicate your timeline before unleashing the flatten function.
willbettsmusic wrote:I know it sounds lazy
Don't know about lazy, but not checking your edits before handling them off is pretty unprofessional.
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Uli Plank

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Re: Black screen detection

PostThu Apr 18, 2024 4:15 am

OmniScope can detect any pure black.
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carsonjones

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Re: Black screen detection

PostThu Apr 18, 2024 1:31 pm

Omniscopes is fantastic. If you are interested in it the blanking is only available in the Pro version. They're having an NAB sale currently (link below). I leave it on a Source scope permanently in one of my layouts and it's ideal as a constant check for this.

https://timeinpixels.com/nobe-omniscope/

I do like having a Clipping DCTL applied at the Timeline level and activating it as a final preflight check before finalizing a project. Updating all the thumbnails in the Lightbox view serves as a great birds eye view of your project.

These two approaches, when combined, are ideal for checking your work.
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Dan Anon

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Re: Black screen detection

PostThu Apr 18, 2024 9:49 pm

Andy Mees wrote:Don't know about lazy, but not checking your edits before handling them off is pretty unprofessional.


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willbettsmusic

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Re: Black screen detection

PostSun Apr 21, 2024 8:00 pm

*sweats*
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willbettsmusic

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Re: Black screen detection

PostSun Apr 21, 2024 8:04 pm

Uli Plank wrote:OmniScope can detect any pure black.

Thanks, I'll check this out!
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willbettsmusic

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Re: Black screen detection

PostSun Apr 21, 2024 8:05 pm

carsonjones wrote:I use Mononodes Utility DCTLs (paid)

At only 59 Euro, this looks like a steal. Thanks for the tip!

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