Sound-devices PIX 250i Bedienungsanleitung PDF herunterladen (Seite 33)

PIX 250i User Guide

Video Scaling & Frame Rate Conversion

Orange: No 3:2 pulldown sensed in 60i/59.94i input signal.

Input video is being converted to 24p/23.976p using a conver-

sion process which drops frames and may introduce judder.

White: 3:2 pulldown sensed in 60i/59.94i input video signal.

Input video signal is being converted to 24p/23.976p using 3:2

pulldown removal which recreates 24p/23.976p as it is cap-

tured from the camera’s shutter.

It is important that 3:2 pulldown be sensed before beginning a recording. If recording begins before 3:2

pulldown is sensed, 3:2 pulldown will not be applied properly.

Up and Down Conversion

Standard-deﬁnition video resolution employs a 4:3 aspect ratio, and high-deﬁnition video resolution

employs a 16:9 aspect ratio. Up-conversion is the process of ﬁtting standard-deﬁnition video (with a

4:3 aspect ratio) into a high-deﬁnition, 16:9 frame. Down-conversion is the opposite process.

The PIX 250i has various options for up and down conversion:

Down-Conversion

Letterbox: Maintains the same height and width ratio. Results in blank bar at top and bottom of im-

age.

Crop: Left and right side of image is cropped to ﬁt into 4:3. Results in missing image at sides of pic-

ture.

Anamorphic: Image is horizontally squashed to ﬁt into 4:3. Results in a narrow looking image.

Letterbox

Crop

Anamorphic

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Sound-devices PIX 250i Bedienungsanleitung Seite 33