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If the recorder does not provide VariFrame support, even
and odd frames may be recorded in the wrong order
(frame swapping). This, however, is easily identified as
juddering motion in playback and can be resolved in
postproduction without a loss of image quality.
Recording systems supporting dual link input for
4:4:4 RGB HD signals do not necessarily support
HD422 dual link input, as this signal type makes
different demands on the recording hardware.
Once recorded, the material can be played back
at a lower frame rate, e.g. 25PsF, allowing the
signals to be transmitted using a single link HD-SDI
connection. Therefore, the material can also be edited
using standard HD postproduction equipment.
HD444
When set to HD444, an output board delivers standard
1920 x 1080 4:4:4 RGB 10 bit HD signals. These
signals are sent over a dual link HD-SDI connection
and can be recorded with any system offering
4:4:4 dual link HD-SDI input (SMPTE 372M).
The full potential of 4:4:4 RGB images can only be
used if postproduction is able to maintain these signals
without converting them to 4:2:2 signals until final
delivery. Green/blue screen material shot in 4:4:4 should
not be converted to 4:2:2 until after chroma-keying.
Productions requiring elaborate color timing/correction
should maintain 4:4:4 at least until after this step.
Mscope™
Mscope enables the use of anamorphic lenses without
the requirement for Data Mode compatible equipment.
Mscope Output
Mscope, like HD Mode, outputs fully processed images,
but uses the full 1.33:1 sensor aperture to create a
1920 x 1440 oversized HD image. In order to output
this oversized image using standard HD interfaces it
has to be split into two separate HD-SDI streams.
Each 1920 x 1080 4:2:2 YCbCr 10 bit HD-SDI stream
contains a 1920 x 720 letterbox image in 2.66:1 aspect
ratio. Link A contains all odd lines from the original
image (line count starts at 1), link B only even lines.
Anamorphic
image (1.33:1)
Split segments
De-squeezed
HD preview (2.66:1)
HD recorder
dual stream IN
single link
preview OUT
A link
B link
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