IQUDC30/IQUDC31/IQUDC32/IQUDC33
Operation Using the RollCall Control Panel
Issue 1 Rev 4
Page 51
© 2016 SAM
5.5.3 Enhanced Film Mode
The Enhanced Film Mode provides a set of solutions to enable optimized conversion of film
originated content. Film originated content may be transported by standards supporting the
original film frame rate, such as 1080 23.98p. Film originated content may also be packed into
interlaced standards using a rule based method to map source frames to interlaced fields. In
this case, the interlaced standard's content is described as having a film cadence.
In order to perform high quality conversion of film originated content, the cadence must be
identified and used to adapt the interpolation process. The Enhanced Film Mode also permits
the synthesis of film cadence in the output.
The Enhanced Film Mode features include:
•
Applying a 2:3 cadence when converting 23.94 psf to 59.94Hz.
•
2:3 detection and removal when converting 59.94 2:3 to 23.98 psf.
•
Maintain 2:3 cadence when up-converting 59.94 2:3 content.
•
Maintain 2:3 cadence when down-converting 59.94 2:3 content.
•
Maintain psf cadence when appropriate.
•
Control 2:3 cadence with respect to timecode.
The “Enhanced Film Mode” sets a sharp conversion aperture suited to filmic content. Select
“on” under the Enhanced Film Mode menu option (default is off). For content that is not
exclusively filmic, or where there are inconsistencies with the input cadence, this mode may
create higher visibility of artifacts.
5.5.4 Input Cadence
Input Cadence controls allow you to define any cadence associated with the input video.
•
Film Cadence
- Enable if the input content is film originated, or simulates film
originated content. Default = Off.
•
59 Cadence
- If the input is film originated and its frame rate is 59.94Hz, then the
cadence should be defined as either
•
2:3 (Default)
•
2:2 (psf)
•
2:3 Source
•
When set to
Automatic
(Default) the input cadence will be determined by the
cadence detection circuit. This feature is useful when the source material
contains mixed cadences.
•
When set to
Input Timecode
, the user defines the relationship between
timecode and the 2:3 sequence. This feature is useful when the source material
contains known continuous 2:3. This setting removes any uncertainty that may be
associated by use of the sequence detector (automatic mode).
•
2:3 Start Hour
- This control allows the user to define the position of timecode when
the 2:3 sequence begins. The assumption is made that the start of the 2:3 sequence
is aligned with the start of program and under normal working practices, that the start
of program is coincident with a integer hour value.
This control is only active when “2:3 Source” is set to Input Timecode. Control is
available from 1 hour to 23 hours in steps of 1 hour. Default is 1 hour.
Note:
This mode is only relevant for film originated content where the cadence is carried in an
interlaced format. In circumstances where the film originated content is carried in a
progressive format, the “Enhanced Film Mode” setting should not be used.
