General requirements – 360 Systems MAXX-1000SD User Manual
Page 138
Page 138
MAXX Owner’s Manual
General Requirements
FILE NAMES
31 characters or less followed by the “.mpg” extension.
Upper/Lower case alpha, 0-9, #%&()-_
STREAM TYPE:
PROGRAM (VIDEO + AUDIO)
VIDEO RESOLUTION:
720x480 (NTSC) or 720x576 (PAL) 4:3 DISPLAY
FRAME RATE:
29.97 (NTSC) or 25 (PAL) (Pulldown is not supported.)
FIELD ORDER:
INTERLACED, TOP FIELD FIRST (See note below.)
BITRATE TYPE:
VARIABLE
BITRATE RANGE:
Recommended range 5 to 30 Mb/s.
Minimum 2 Mb/s, maximum 50 Mb/s
GOP STRUCTURE:
Closed GOP (Open GOP architecture is not supported)
Recommended values 1 (I frame) 6 (IBPBPB) or 15
PROFILE:
MAIN or 4:2:2
LEVEL:
MAIN
CHROMINANCE FORMAT:
4:2:2 or 4:2:0
SEQUENCE HEADERS:
REQUIRED – 1 per GOP
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:
MPEG LAYER 2
AUDIO SAMPLE RATE:
48000 HZ STEREO NO DE-EMPHASIS
AUDIO BITRATE:
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.
MULTIPLEXING TYPE:
MPEG-2
ALIGNED SEQUENCE HEADERS
TIMESTAMPS IN ALL FRAMES
SEQUENCE END CODES required.
PROGRAM END CODE required.
PACK SIZE:
2048 BYTES
STARTUP DELAYS:
PACK=0, AUDIO=180, VIDEO=180.
A/V offsets using these parameters are not supported.
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.