DcVD

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The proprietary video format based off the Mpeg SOFDEC exclusively for the Sega Dreamcast. Including custom encoded video in Sofdec (.sfd) format as well as the mpeg sofdec program on a cd prepared for self-boot.

At maximum bitrates the DC can handle, it is possible to fit approx. 38 minutes of near DVD quality video at true 480p60 EDTV on one CD. For true progressive scan, DC VGA adapter required.)

Contents

[edit] Specifications

[edit] Video

Format: Mpeg-1 (.m1v)

FrameRate: 23.976fps, 24fps, 25fps, 29.976fps, 30fps, 60fps (Match Source FrameRate)

Resolution:

  • 640x272p (2.35:1 True Widescreen; No letterboxing)
  • 640x480p (4:3, widescreen material letterboxed)
  • 352x240p (4:3, only for non-widescreen material)

Bitrate:

  • Variable Bitrate (VBR)
  • Minimum Bitrate: 64kbps
  • Maximum Bitrate: 3,000 kbps ( 3 mbps )
  • Average Bitrate: 2,200 kbps ( 2.2 mbps )

Video Buffer Size (VBV): 196kb

GOP Structure: I P pictures only

Quantize Matrix: Default

[edit] Audio

Linear PCM 1536kbps (.wav) compressed into Sofdec Audio 44khz 396kbps (.sfa CD Quality)

.m1v and .sfa must be multiplexed into .sfd Sofdec data (not explained here).

[edit] See also

[edit] External links

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