media composer 7.0 color management (luts)

Media Composer 7.0Color Management (LUTs)

Igor Riđanović

Some new features in Media Composer 7.0

LUT and CDL support

FrameFlex AMA media management Background transcoding

Technology

MXF, MOV are wrappers carrying encoded essence and metadata

DNxHD, Prores are codecs

RAW are camera manufacturer proprietary files

Technology

AMA (Avid Media Access)

LUT (Lookup Table)

CDL (Color Decision List)

Rec. 709 color space

Terminology

Color model—an abstract primary color mixing principle

Color space—specific values for the primaries Color gamut—unambiguous color set defined by the primaries Gamma—nonlinear encoding

PAR

Color gamut

linear light intensity

Gamma

recordedintensity

perceivedbrightness

Wolphram|Alpha

Values are intrinsically tied to the device

R 255G 255B 000

sRGB color space(computer monitor)

R 255G 255B 000

mystery color space(some handheld device)

Device dependent color—numerical representation

R 205G 012B 005

R 205G 012B 005

R 205G 012B 005

device 1

device 2

source device

Device dependent color

R ?G ?B ?

R 205G 012B 005

device 2

source device

Device dependent color

R 212G 008B 010

R 205G 012B 005

device 2

source device

Device dependent color

CMS

Project setup

Y'CbCr—4:2:2 chroma subsampling

R'G'B' – 4:4:4 sampling

Both use 2.2 gamma

AMA plugins

Plugins are provided by third party manufacturers

Open console window: CTRL+6 or Command+6

Execute AMA_ListPlugins

Camera files link/import

Built-in scope and histogram operation

CDL (color decision list)

TITLE: ONE EVENT CDL

001 Reel01 V C 10:05:29:14 10:05:43:08 01:00:00:00 01:00:13:18

*ASC_SOP (1.000000 1.000000 1.000000)(0.000000 0.000000 0.000000)(1.000000 1.000000 1.000000)

*ASC_SAT 1.000000

out = (i x s+o)pSlopeOffsetPower

Legacy files import

Correct level settings

New color options for AMA linked files

FrameFlex

Legacy files import

How do popular programs color manage?

0 255

0 25523516

0 mV

16

700 mV

superblack superwhite

How do popular programs color manage?

without dithering with dithering

Special Thanks

James Mathers, Digital Cinema Society

Matt Feury, Avid Technologies

Luc Amiot, Avid Technologies

Bojan Stanivukovich, T-Stop, Inc., Hollywood

Schy Gleason, Clapping Trees Media

This presentation is available for download at HDhead.com.