If there is only an Out mark, only frames from start to Out are exported. If there is only an In mark, only frames from In to end are exported. In both cases, the In and Out frames are not exported.
For File Sequence and Movie, foreground export lets you export media without requiring you to re-render. You do not allocate frames on your framestore because content is streamed directly to the exported file, reducing the time to export.
For Sequence Publish export, when the media needs to be packaged, the application performs the required rendering before exporting. For example, using the Flattened tracks option with Timeline FX requires rendering prior exporting, as do segments with a BFX or Resize.
Flame works in an RGB colour space: it needs to translate RGB information back into YUV. This setting ensures that the right encoder is used for this. Specifying the wrong option will result in colour problems upon decoding. Per Recommendation BT. 2020, UHD media should use the Rec. 2020 colour space. But this is rarely the case at the moment: UHD clips still use Rec. 709. The Rec. 2020 option is there is case you need the new standard.
See also: Applying Colour Management to Clips
When exporting DPX files, you can choose a DPX Transfer Characteristic. A DPX Transfer Characteristic is information that is stored in the DPX image file header. It identifies the attributes associated with a particular film or video format, such as resolution, frame rate.
Setting a Transfer Characteristic in no way changes the image information stored in the DPX file. The Transfer Characteristic simply indicates the attributes of the DPX file read by another device or application. Some devices or applications may take advantage of this information to improve workflow. For example, selecting Logarithmic can allow a film recorder to adjust its parameters to print film-originated DPX files with the correct densities.
Select: | For: |
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Z depth homogeneous, Z depth linear, PAL, NTSC, CCIR 601 (525), CCIR 601 (625), CCIR 709-4, SMPTE 274M | Images that you want to identify as one of these types. Although the SMPTE 274M standard defines these DPX Transfer Characteristics, it does not provide usage specifications for them. As a result, these Transfer Characteristics are not generally used in the industry. |
Unspecified | Images where the format is not specified. |
Logarithmic | Negative film scanners recording status M densities. |
Linear | Video images which have built-in gamma correction. This refers to images having a true linear quantization scheme (such as CG-originated material). |
Printing Density | Negative film scans which use the SMPTE Printing Density settings. SMPTE Printing Densities use status M density measurements with a higher gain in the red component. |
Academy Density Exchange (ADX) | Images at 10- and 16-bit film density encoding, in which colour information is encoded using a logarithmic scale. Usually used in the context of an Image Interchange Format workflow. |
Setting a Colorimetric Specification in no way changes the image information stored in the DPX file. The Colorimetric Specification simply indicates the attributes of the DPX file read by another device or application. Some devices or applications may take advantage of this information to improve workflow. For example, selecting Academy Density Exchange (ADX) can allow a film recorder to adjust its parameters to print film-originated DPX files with the correct densities.
For example, a frame pad of 6 indicates that each frames's file name has its frame identifier padded with a number of zeroes required to make it a 6-digit number: frame 1 is written as 000001, frame 22 as 000022, frame 55555 as 055555, and so on.
If you enable Include Handles (in Sequence Publish), the handles are taken into account, with the frame index starting at the first exported frame. In the case of Use Start Frame, this means that if the clip has a head of 10 frames and a clip Start Frame of 1001, the frame index starts at 991.
Select: | To: |
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Centre/Crop | Fit the source image, centred, over the destination frame. If the source is larger than the destination, it is cropped. If the source is smaller than the destination, it is surrounded by a black border. |
Crop Edges | Fit one edge of the source into the destination frame without stretching or squashing the frame. Excess parts of the source frame after resizing are cropped. If the source—after the one edge is resized—is wider than the destination, its overhanging left and right edges are cropped. If the source is taller than the destination, the upper and lower edges are cropped. |
Fill | Fit the source, width, and height, into the destination frame. If the source and destination frames do not have the same aspect ratio, the image can become distorted. |
Letterbox | Fit the source to the destination frame without squashing or stretching it, and without cropping the source. If the source is wider than the destination, black bars fill the top and bottom of the destination frame. If the source is narrower than the destination, black bars fill the right and left sides of the frame. In all cases, the entire source frame is contained within the destination frame. |
Select: | To get: |
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Impulse | Quick, low-quality results. |
Triangle | Moderate results with little processing overhead. |
Mitchell | Best results when resizing a clip to a higher resolution. |
Bicubic | Very good results for resizing soft-looking images. Use to sharpen the image. |
Quadratic | Good results for resizing simple images with straight edges. Similar to Gaussian but with more blurring. Use to soften the image. |
Gaussian | Excellent results when resizing a clip with no patterns and numerous straight edges to a lower resolution. Useful for softening some detail. |
Shannon | Excellent results when resizing a clip to a lower resolution. Very similar to Lanczos, but results are a little softer. |
Lanczos | Best results when resizing a clip containing a variety of patterns and elements to a lower resolution. It is the most complex with the longest processing time. |
For interlaced material, you can specify whether the resize needs to be done from both fields or just from one of the two. In the latter case, the result is a progressive clip made from the same two fields.
Select: | To resize: |
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From Clip | Using the scan mode of the source clip. |
Progressive | A frame-based clip to another frame-based clip. |
Field 1 | A clip by drawing Field 1 followed by Field 2. |
Field 2 | A clip by drawing Field 2 followed by Field 1. |
Note that in the case of IMX exports, the Scan Mode box is ignored: NTSC clips are always exported as F2 dominant, while PAL clips are always exported as F1 dominant.
Select: | To mix down: |
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No Mixdown | Nothing |
Mixdown As Is | With the current output strip assignments. |
Mixdown To 4 tracks | To four tracks. The output strips are assigned sequentially in fours to the mixed-down channels (where M1 goes to 1, M2 to 2, M3 to 3, M4 to 4, M5 to 1, and so on). |
Mixdown To Stereo | To one stereo track. The output strips are assigned sequentially in twos to the mixed-down channels (where M1 goes to 1, M2 to 2, M3 to 1, M4 to 2, and so on). |
Mixdown To Mono | To one mono track. |