MXF Format Settings - Import

Material at 1080i sometimes uses a thin raster frame format. It uses a frame size of 1440x1080or 1280x1080. When importing, enable Scale to Full HD in Format Specific Options > Image to scale the material to the full 1920x1080 frames. Disable Scale to Full HD to import the clip using the thin raster frame format.

Metadata Settings

Tape Name box

Select an option to determine how the tape name is set when importing clips.

Select:	To:
Enter Tape Name	Activate the Tape Name field where you enter the tape name. When selecting multiple files for import, this tape name is used for all imported files.
Tape Name from File Name	Use the name of the imported file as the tape name.
Tape Name from Directory	Determine the tape name from the detected directory structure. Use the Level field below to configure the relative path to the directory from which the tape name can be determined.
Tape Name from Header	Read the tape name from the header of the imported file.

Level field

Set from which directory the tape name is taken, relative to the location of the clip in the directory structure.

Although available for all types of files, the Level field is intended for directory structures output by film scanners. A typical image file directory structure looks like this: ./<tape>/<resolution>/clip.######. In this case, selecting Levels Up 2 in the Level field identifies the directory that corresponds to the tape name (./<tape>). Enabled if Tape Name is set to Tape From Directory.

Tape Name field

Enter the name to use as tape name when importing the clip. Enabled if Tape Name is set to Enter Tape Name.

Timecode box

Timecode is read from the file header, when present. Not editable.

Clip Settings

Clip Name box

Select how the clip is named when the file is imported.

Select:	To:
Enter Clip Name	Activate the Clip Name field so that you can manually enter the clip name. When selecting multiple files for import, this name is used for all imported files.
Clip Name from File Name	Use the name of the imported file as the clip name.
Clip Name from Header	Read the clip name from the header of the imported file.

Clip Name field

Enter the name to use when importing the clip. Enabled if Name is set to Enter Clip Name.

Image Settings

Aspect Ratio box

Select the aspect ratio assigned to imported clips. Enter Pixel and Enter Aspect affect pixel and frame a pixel and frame aspect ratios respectively. You might need to change the aspect ratio as many applications erroneously write to exported files a pixel aspect ratio of 1 (a square pixel), even for formats that have non-square pixels (NTSC, PAL).

Viewing the clip in the Player with the specified aspect ratio requires you to enable, in the Player, Options > Show Viewing Settings > Use Ratio. The Previewer in the MediaHub always displays clips using the specified aspect ratio.

Note that the application internally uses a frame ratio, not a pixel ratio. To specify a pixel ratio, you must select Enter Pixel Aspect Ratio; Aspect Ratio from Resolution and Aspect Ratio from Header are interpreted as frame ratios.

Aspect Ratio field

Enter the aspect ratio of the imported frames, as a Width:Height ratio. Enabled when the Aspect Ratio box is set to Enter Aspect Ratio or Square Pixels.

YUV Decoding box

Select the YUV colour space used by the clip to import. Because Flame works in the RGB colour space, it needs to translate YUV information into RGB. This setting ensures that the right decoder is used for this. The Auto setting selects the colour decoder based on the resolution of the clip: Rec. 601 for clips with a resolution lower than 720 lines, Rec. 709 for everything else. Specifying the wrong colour space results in colours that are off.

Per Recommendation BT. 2020, UHD media should use the Rec. 2020 colour space. But this is rarely the case at the moment: UHD clips use Rec. 709. The Rec. 2020 option is there is case you come upon a correctly encoded UHD clip.

Include YUV Headroom button

Enable Include YUV Headroom when importing a full (legal, extended) range clip, but disable this option when importing a legal range clip.

QuickTime ProRes is legal range and requires that you disable Include YUV Headroom.

Content from cameras is usually shot at video levels. In this case, disable Include YUV Headroom. Some cameras can record at full range and require you enable Include YUV Headroom. Refer to the manufacturers documentation for details.

Finally, you should enable Include YUV Headroom when importing from grading systems content that has not been legalized. On the other hand masters or final grade media are usually legal range.

Scale to Full HD button

Enable to have media with a 1280x1080 or 1440x1080 resolution display at a standard 1920x1080 resolution. Disable to display the media at its native (1280x1080 or 1440x1080) resolution.