Aspect Ratio and Active Format


Video Signal Shape (click to copy SVG)
Frame: Show a Frame with a Pixel Aspect Ratio
Content: Show Content with a Protected Area
AFD and Bars:
Subtitles:

Scaling (Cropping / Padding)

Shown on 4:3 Display


Active = :, Protected = :
Src.:
Dst.:

Shown on 16:9 Display


Active = :, Protected = :
Src.:
Dst.:

Shown on "DCI" (256:135) Display


Active = :, Protected = :
Src.:
Dst.:

Shown on "21:9" (64:27) Display


Active = :, Protected = :
Src.:
Dst.:

Shown on 32:9 Display


Active = :, Protected = :
Src.:
Dst.:
WxH(x,y,w,h): WxH = frame size, x,y = window position, w,h = window size

AFD Chart: Frame with alternative Active Format Descriptors

Full Frame
0b1000

16:9 (top)
0b0010

4:3
0b1001

14:9 (top)
0b0011

16:9
0b1010

4:3 with 14:9 shoot&protect
0b1101

14:9
0b1011

16:9 with 14:9 shoot&protect
0b1110

64:27 (> 16:9)
0b0100

16:9 with 4:3 shoot&protect
0b1111


CTA-861 AVI InfoFrame:
Data Byte 1 Y2 Y1 Y0 A0= B1= B0= S1 S0
Data Byte 2 C1 C0 M = R =
Data Byte 3 ITC EC2 EC1 EC0 Q1 Q0 SC1 SC0
Data Byte 4 VIC =
Data Byte 5 YQ1 YQ0 CN1 CN0 PR3 PR2 PR1 PR0
Data Byte 6 ETB07-ETB00 =
Data Byte 7 ETB15-ETB08 =
Data Byte 8 SBB07-SBB00 =
Data Byte 9 SBB15-SBB08 =
Data Byte 10 ELB07-ELB00 =
Data Byte 11 ELB15-ELB08 =
Data Byte 12 SRB07-SRB00 =
Data Byte 13 SRB15-SRB08 =
Data Byte 14 ACE3 ACE2 ACE1 ACE0 FR3 FR2 FR1 FR0
Data Byte 15 F157=0 FR4 RID =
VICs for 23,24,25,48,50,60,100, or 120 Hz. If VIC ≠ 0: RID for 200 Hz and up, otherwise RID=0

Version 0.8, 2024-11-11

Support: sub-afdasp @ scara . com

Latest Version: https://scarabaeus.org/afd/

Revision History:
  • 0.1: 2022-04-08, initial version
  • 0.2: 2024-10-20, added support for subtitles, AFD tag
  • 0.3: 2024-10-22, added support for vertical ARs, provide SVG source as XML in clipboard, style cleanup
  • 0.4: 2024-10-23, added support for resolutions
  • 0.5: 2024-10-30, added cropping / padding for 4:3, 16:9 and 64:27 displays
  • 0.6: 2024-10-31, added determination of scaling windows
  • 0.7: 2024-11-06, added CTA-861 AVI InfoFrame values, fixed scaling windows
  • 0.8: 2024-11-11, vertically oriented and more compact redesign of UI (mobile friendly), add DCI and 32:9 display. Fix scaling calc for anamorphic pixels.