Lägga in bakgrund i video
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ErlandH
Aktiv medlem
Du behöver ett redigeringsprogram som klarar av chroma key, t ex Apples iMovie.
http://support.apple.com/kb/PH2245
http://support.apple.com/kb/PH2245
growingart.se
Aktiv medlem
Jag har adobe premiere pro och windows.
Lobbamobba
Aktiv medlem
Dåså, sök på "color key" bland effecter, lägg den på klippet, välj grön med pippeten, dra i tolerance och sedan finlira lite med feather och de andra.
Voila
pechblande
Aktiv medlem
av de tusentals träffarna på chroma key och premiere var redan den första alldeles pedagogisk.
growingart.se
Aktiv medlem
Strålade, stort tack för informationen. Ska gå igenom det, och med min klient. Själv skulle jag föredra någon bakgrund i den vanliga miljön, det finns spännande lab som naturligt skulle fungera som bakgrund. Jag gjorde en egen (test)video på vår forskning, och nu fick jag förfrågan om ett uppdrag.
Martin Chab
Aktiv medlem
Consider this elements before you shoot a green screen to avoid frustrations.
1. the screen should be as less reflective as possible (there are special paints and materials for that)
2. the screen color should be as saturated as possible and as pure green as possible
3. the light in the screen should be soft and absolutely even, the more even the better
4. avoid any kind of marks or wrinkles in the screen
5. much better if you use daylight to lit the whole scene (about 5600K)
6, try to use a camera that can record at least 4:2:2 chroma subsampling
follow this steps to lit the scene
1. put the light on the screen without the subject and make it very even
2. adjust your camera setting so the screen value is around 60 IRE, that two parameters shouldn't be changed at all from now on
3. put your subject in front of the screen as far away as possible for your scene to avoid shadows aver the screen and most important spills (reflection of the green over the subject)
4. lit your subject to your taste considering that the background and camera settings shouldn't change
5 if you have too much spill you can always use a magenta filter on the backlight to diminish its effect (all the good software keyers has a despill controls but the less spill the easier the keying)
6. always film a clean plate (the screen without the subject) that can help you out in case of panic to fix your chromakey
7. avoid as much as possible loose thin hairs as they are very difficult to key (specially if you are not using a high end camera with a good chroma subsampling)
8. if you can take the screen out of focus to soften it (shallow depth of field) it will be much better and easier the postproduction
9. shoot
10. don't expect to do a perfect key in one pass, most of the times you need to key several parts of the image and combine them together as a perfect screen is very difficult to obtain.
if you follow this i promise you will save tons of time and frustration.
all the best!!
1. the screen should be as less reflective as possible (there are special paints and materials for that)
2. the screen color should be as saturated as possible and as pure green as possible
3. the light in the screen should be soft and absolutely even, the more even the better
4. avoid any kind of marks or wrinkles in the screen
5. much better if you use daylight to lit the whole scene (about 5600K)
6, try to use a camera that can record at least 4:2:2 chroma subsampling
follow this steps to lit the scene
1. put the light on the screen without the subject and make it very even
2. adjust your camera setting so the screen value is around 60 IRE, that two parameters shouldn't be changed at all from now on
3. put your subject in front of the screen as far away as possible for your scene to avoid shadows aver the screen and most important spills (reflection of the green over the subject)
4. lit your subject to your taste considering that the background and camera settings shouldn't change
5 if you have too much spill you can always use a magenta filter on the backlight to diminish its effect (all the good software keyers has a despill controls but the less spill the easier the keying)
6. always film a clean plate (the screen without the subject) that can help you out in case of panic to fix your chromakey
7. avoid as much as possible loose thin hairs as they are very difficult to key (specially if you are not using a high end camera with a good chroma subsampling)
8. if you can take the screen out of focus to soften it (shallow depth of field) it will be much better and easier the postproduction
9. shoot
10. don't expect to do a perfect key in one pass, most of the times you need to key several parts of the image and combine them together as a perfect screen is very difficult to obtain.
if you follow this i promise you will save tons of time and frustration.
all the best!!
growingart.se
Aktiv medlem
Tack allihop, nu vet jag på ett ungefär hur det fungerar. Jag är inte så förtjust i sådan här bearbetning, föredrar bilder i naturlig miljö och fånga tillfällen. Jag har i alla fall inte en skärm, och jag gissar att ett grönt lakan fungerar inte. Vore annars roligt att springa iväg med vårt enda gröna lakan, och hustrun undrar mer och mer om mannen som hon är gift med.
