Timelapse Blackshade Issue Fix?

[Marc Dunham]

I was doing 5k 1fps timelapses on my Scarlet for an event one night and forgot to calibrate to the shutter speed. So my image now has static green, blue, red dots throughout. Newbie mistake, and not the end of the world. I figured I'd ask to see however if there was a way to fix this or minimize the damage in post?

 

[Andrew Gentle]

If you realise you forgot to blackshade while you're on set, you could have recorded some footage with the body cap on at the same resolution and temperature and then used a frame from that to subtract from your other footage. Other than that, I'm not sure what you can do that isn't tedious rotoscoping...

 

[Shervin Mandgaryan]

You could try neat video to see if it removes the dots. Not sure the severity of it so I really can't say that it will/will not work. Worth a try.

 

[Enrique Blein]

If you realise you forgot to blackshade while you're on set, you could have recorded some footage with the body cap on at the same resolution and temperature and then used a frame from that to subtract from your other footage. Other than that, I'm not sure what you can do that isn't tedious rotoscoping...

How do you do the substraction?

 

[Serge Polevitzky]

If you realise you forgot to blackshade while you're on set, you could have recorded some footage with the body cap on at the same resolution and temperature and then used a frame from that to subtract from your other footage. Other than that, I'm not sure what you can do that isn't tedious rotoscoping...

How about an approximate "after-the-fact" put the body cap on [temperature & camera warmed-up about the same as when you did the real shoot] & shoot a frame & now use this frame as the base & subtract ? Would this work ?

 

[Marc Dunham]

Ya how would one go about subtracting this data though? I tried Neat Video, it wont recognize the colored dots as noise.

 

[Arnold F.]

Are you certain that not black shading was the cause?

Separately, is it now possible to shoot less than 1fps with the Scarlet?

 

[Mike Lary]

Marc, you're looking to do a dark frame subtraction. I haven't tried this with video, but what's generally done with still images is the source layer is duped, then Difference is selected in the Layer properties, then opacity is adjusted accordingly. You might do a search on "dark frame subtraction" + (whatever app you have access to) and maybe "time lapse" since this is a common problem for time lapse shooters.