System information
Item Description
Attributes Displays the frame size, in pixels (x,y). color depth, and length of the
file.
Field order Choose a setting from the drop-down list to change the field order of
the file. Consult your capture/video output card's manual for the
proper field order.
n None (progressive scan) – Select this option when viewing the
video on a computer. This option ignores interlacing.
n Upper field first – Select this option (also called odd or field
A) for video that will be viewed on a television.
n Lower field first – Select this option (also called even or field
B) for DV output or if Upper field first produces jittery or
shaky output or if your hardware manual specifies lower field
first.
Pixel aspect ratio Choose a setting from the drop-down list to change the pixel aspect
of the file. This setting will depend on your capture/video output
card. Consult your capture/video output card manual for the proper
settings.
Alpha channel Choose a setting from the drop-down list to change the alpha
channel information for the file.
If the alpha channel in an image is not detected, choose the correct
type of alpha channel from this drop-down list. If you're unsure, try
the Premultiplied setting first.
n Undefined – Video provides no alpha channel information.
This setting ignores any alpha channel information in the file.
n None – Video has no alpha channel or there is an alpha
channel but it's completely opaque (solid).
n Straight (unmatted) – Transparency information is
maintained in only the alpha channel. Alpha information
must be applied to the RGB channels before compositing.
n Premultiplied – The standard method of handling alpha
information. Transparency information is maintained in the
alpha and RGB channels, and the image is ready for
compositing. No RGB component exceeds the alpha value.
n Premultiplied (dirty) – Similar to Premultiplied, but RGB
components may exceed the alpha. This setting is used
mainly for images created by 3D applications involving
compositing of 3D images over a non-solid color image
background.
Color space Choose the color space that the media is in. For more information,
see "Specifying the color space for individual shots" on page 430.
112CHAPTER 5