Table of Contents
Advertisement
General Requirements
FILE NAMES
STREAM TYPE:
VIDEO RESOLUTION:
FRAME RATE:
FIELD ORDER:
BITRATE TYPE:
BITRATE RANGE:
GOP STRUCTURE:
PROFILE:
LEVEL:
CHROMINANCE FORMAT:
SEQUENCE HEADERS:
Recommended combinations of Bit Rate, GOP size and Profile (Chrominance format):
25 Mb/s, I frame only, 4:2:2 – high quality, for contribution content
15 Mb/s, I frame only, Main (4:2:0) – good quality, frame accurate editing
12 Mb/s, 6 frame GOP, Main (4:2:0) – good quality, efficient storage.
8 Mb/s, 15 frame GOP, Main (4:2:0) – highest storage efficiency.
AUDIO MODE:
AUDIO SAMPLE RATE:
AUDIO BITRATE:
MULTIPLEXING TYPE:
PACK SIZE:
STARTUP DELAYS:
The Image Server does not support intermixing (playing back-to-back) material encoded Bottom
Field First with that encoded Top Field First. Top Field is the method used by the Image Server,
therefore if both imported and recorded material are to be used together, imported material must
be encoded Top Field First. Bottom Field First can ONLY be used when all the material to be
played on a particular channel is encoded that way, or in applications where clips are played one
at a time.
Page 130
All manuals and user guides at all-guides.com
31 characters or less followed by the ".mpg" extension.
Upper/Lower case alpha, 0-9, #%&()-_
PROGRAM (VIDEO + AUDIO)
720x480 (NTSC) or 720x576 (PAL)
29.97 (NTSC) or 25 (PAL)
INTERLACED, TOP FIELD FIRST (See note below.)
VARIABLE
Recommended range 5 to 30 Mb/s.
Minimum 2 Mb/s, maximum 50 Mb/s
Closed GOP (Open GOP architecture is not supported)
Recommended values 1 (I frame) 6 (IBPBPB) or 15
MAIN or 4:2:2
MAIN
4:2:2 or 4:2:0
REQUIRED – 1 per GOP
MPEG LAYER 2
48000 HZ STEREO
384 KBPS VARIABLE BITRATE or highest available value.
Note that using lower bit rates will not save storage space as audio is
uncompressed before storage. Low rates adversely affect audio quality.
MPEG-2
ALIGNED SEQUENCE HEADERS
TIMESTAMPS IN ALL FRAMES
SEQUENCE END CODES required.
PROGRAM END CODE required.
2048 BYTES
PACK=0, AUDIO=180, VIDEO=180.
A/V offsets using these parameters are not supported.
4:3 DISPLAY
(Pulldown is not supported.)
NO DE-EMPHASIS
Image Server 2000 Owner's Manual
Advertisement
Table of Contents
