Dirt on footage
Brian Stumpy
Location:
Joined:
January 05, 2007
January 05, 2007
Offline
Hey guys,
I made a boo-boo in filming my latest (and first so I can chalk it up to that thing called learning) independent feature, and in a few moving scenes there is either dirt or water on the ens/footage. I have attached a picture of the worst scene with dirt in it (there are only two, and in a beach scene, sand is supposed to be on the lens):
I have tried many different filters and many different techniques to try to erase this stuff. I was wondering if you guys had any ideas for me.
Comments
hmmm, i don't know how much
hmmm, i don't know how much you're going to get away from that. i'm the lowly sound guy though so i'm no vid expert, but that stuff looks like it is there to stay...
------------
You're going to have to do
You're going to have to do it frame by frame.
Grab the clip that is effected, export it as filmstrip, and use Photoshop to doctor each frame.
Tedious work my friend.
Presumably, the camera is
Presumably, the camera is not stable relative to the car door, either? If that was the case, you could fix one frame and then cut and paste the static parts over the later frames.
Fortunately, it looks like the affected areas are pretty low contrast, so it won't be really obvious that you've blurred something out.
When using Photoshop to fix frames, less is more. Unless you have a really good eye or plan for it, even if it looks like you've fixed the problem you'll get flicker in the moving video from where the edges of the blurred sections don't line up. The dirt on the lens might be less jarring than the flickering blur trails.
I'd suggest starting by running the Noise>Despeckle and Noise>Dust and Scratches filters to see if there's any improvement. If there is, check it played back to make sure it looks alright, then target areas that are still obvious with the smudge tool, clone tool, or marquee + blur filters.
If the filmstrip exports right, you can approximate what it will look like in motion without importing it back into your film editor by dragging your Photoshop window to fit a single frame and then holding Page Down.
~Stephen
DigiTribe Developer
“She’s the muse of destroying the world.”
“That’s an art form?”
Terpsichore smiled. “You know?” she said. “I asked that too. But it’s all about your attitude when you’re doing it.”
If you're going to use
If you're going to use Photoshop to correct this issue, I wouldn't use a blur.. I'd simply use a spot healing brush to eliminate your dirt flecks, and that should decrease the chance that you'll see any of the changes once the film is played.