UM:Projects Project Format Attributes
Each output format has a set of attributes defined, including :
|•||Colour Management System (CMS)|
When setting the attributes for your output formats you are defining the different ways that you wish to render material. It does not affect the source material that you will import, which has its own source format.
There are a variety of predefined formats available in the preset drop-down list. Selecting a preset will configure the other settings appropriately.
You can configure the format settings independently of the the preset chosen.Frame Rate
Use the frame rate drop-down list to select the frame rate for the composition timelines created in the project
If you selected a default setup, it will automatically set its own frame rate, but you can change this. If you do change it, the default setup will change to Custom Setup.
You will be able to see the frame rate of each of your compositions and media in the project library.
It is possible to create compositions with different frame rates within a single project. The Library/New Composition button always creates a timeline at the frame rate set on the currently selected output format. You can create a composition at a different frame rate by changing the rate of the output format (at the project screen), creating the New Composition, then reverting the output format rate again.
Default : RGB
Use this drop-down to select the colour channels to use. This defines the components used in any cache generated.
This is an advanced setting. In general, do not change this.Component Bit Depth
Default : 10 bit
Use this drop-down to select the bits per component (colour accuracy) that you want the output format to render.
The image width and height, in pixels, are set automatically when you choose one of the preset formats from the setup menu. If you want to define a different image size for your output format then simply enter the values into the appropriate text boxes; in doing so, the default format will automatically change itself to Custom Setup.Viewing Aspect Ratio
The aspect ratio for viewing images is set automatically when you choose one of the default formats from the setup menu. If you want to define a different aspect ratio for your output format then simply enter the value into the appropriate text box; in doing so, the default format will automatically change itself to Custom Setup. You will be able to toggle the aspect ratio correction on/off when viewing images.
Render OptionsCache Output
Default : OFF
Enabling Cache Output will cause output caches to be generated (in the output format) if the source format differs from the output. If the source format matches the output, an output cache is generated if any Master layer effects are added. Cache Output can be set independently on any project output format.
Enable this :
|•||To ensure everything is rendered and ready to lay-off to video.|
|•||On a 10 bit secondary output format when your master format (and sources) are half-float or 16 bit. Cache Output will ensure that the secondary format caches are 10 bit which can improve realtime performance.|
frame / field rendering
Full support for interlaced video formats is included.
Progressive format, no fields.</br>
Fields, with field order f1:f2 [PAL]</br>
Fields with field order f1:f2 [NTSC]</br>
Field settings will enable field edits/cuts in the composition, field viewing, playback and rendering.Conversion Settings
If your source images are a different resolution to your defined output, you can choose if and how they are scaled and/or cropped for output.
Displays the source image in its original size. This may result in a cropped or blanked image, depending on the difference between the source and output resolution and aspect ratio.
Scales the source image to the size of the output format.
Crops the source image and scales it to the size of the output format.
The center of the source image is mapped to the center of the output format maintaining the source image aspect ratio. This may result in a cropped or blanked image, depending on the difference between the source and output resolution and aspect ratio.Filtering
The filter type selects the mechanism used to transform the pixels in the source image to the new output. This mechanism involves calculating the value of an output pixel as an aggregation of contributing source pixels. How the various pixel contributions are weighed defines the filter.
In order of worst to best (or increasing accuracy) :
Only the source pixel at the center of the projected boundary is sampled. This method is very prone to visible artefacts such as jagged image edges.
The four pixels in the source image that are closest to the center of the projected boundary are sampled. Their weighting is based on the relative proximity to the center of the projected pixel boundary. This produces an accurate colour result but doesn't cut down aliasing as well as Gaussian does. Box and bilinear will produce very similar results for small scale reductions, but due to the nature of the software coding bilinear is generally the fastest of these two options.
All pixels falling within the projected pixel boundary are sampled and their weight is proportional to their area that lies within the projected pixel boundary. Box and bilinear filtering will produce very similar results for small scale reductions, but box can produce better results for larger scale reductions.
All pixels falling within the projected pixel boundary are sampled and weighted using a gaussian filter kernel. This produces better results than the box or bilinear filters in so far as it results in less aliasing, but is slower.
Uses a sinc filter and is the best general filter for up and down-scaling, providing a sharp result without artefacts. This is the default setting.
A windowed form of the sinc filter which may give better results in some cases.Colour Management System (CMS)
Each defined output format can have an independent colour Look Up Table applied (LUT) as part of your Colour Management System (CMS).
A variety of LUT formats and CMS systems are supported, including the Nucoda CMS, THX Cinespace and Kodak.
The LUT can be used in two ways :
|•||As a viewing only LUT. The LUT is not rendered on the final output. The LUT can be selected and toggled on/off inside the project.|
|•||As a rendered LUT on the output. Pressing the Apply CMS button marks the selected output format with CMS and burns in the LUT on this format.|
Sample CMS LUT files are provided in the folder :