Operating the Equipment Locally
Instruction Manual: evolution 5000 E5710 and E5720 Encoder Page 4-43
ST.TM.E10074.1
Field/Frame Option
To access the Field/Frame option, press the Field/Frame softkey in the
Video Encoder Menu. This enables the choice of field or frame based
pictures.
MPEG-2 encodes video at the field/frame level in what are known as
pictures. These are coding units within the hierarchy of the spec. Pictures
can be used in two ways, frame pictures and field pictures. With frame
pictures a frame of a field 1 and field 2 is encoded as a single unit. With
field pictures each individual field of video is encoded as a single unit, but
must be followed or preceded by another field picture relating to its
matching field.
Field/Frame
Field/Frame Mode : +
Frames —
Enter l
Update using softkeys Quit l
Table 4.37: Field/Frame Options
Selected Option Description
Fields Field based pictures.
Frames Frame based pictures.
Auto Automatically chooses the correct option on a frame by frame basis.
3:2 Pulldown Option
To access the 3:2 Pulldown option, press the 3:2 Pulldown softkey in the
Video Encoder Menu. This enables 3:2 pulldown (film) mode to be
switched On and Off.
NOTE…
This option is only available if a 525 line 29.97 Hz video source is selected.
The option should be switched on if the video material originated on film
and has been converted from the 24 frames per second film rate to the
29.97 frames per second NTSC rate. This enables the Encoder to increase
the video compression by only including a flag in the transport stream to
represent a repeated field (when detected), rather than compressing the
repeated fields.
NOTE…
It is recommended to set this option to On.
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