The following options are available in the Keyframe And Rendering panel of the Export Movie Settings dialog box and the Export Frame Settings dialog box:

Bit Depth

Allows user to override, for movie export, the project’s bit depth settings. For more information about project bit depth settings, see Video Rendering Settings under Adjust project settings and presets.

Use Project Setting

Renders the movie at the bit depth set for the project.

8-bit

Renders the movie at 8 bpc, even if Maximum Bit Depth is selected for the project.

Maximum

Renders the movie at maximum bit depth, up to 32 bpc, even if Maximum Bit Depth is not selected for the project.

Fields

Choose an option if required for your final medium. Lower Field First is the default. No Fields is the equivalent of progressive scan, which is the correct setting for computer display and motion picture film. Choose Upper Field First or Lower Field First when exporting video for an interlaced medium, such as NTSC, PAL, or SECAM. The option you should choose depends on the specific video hardware you use.

Deinterlace Video Footage

Select this option if the video content in the sequence is interlaced and you are exporting to a noninterlaced medium, such as motion picture film or progressive scan video. Deinterlacing can also make it easier to apply high‑quality effects in another program, such as Adobe After Effects. If the sequence content does not have fields, don’t select this option; instead select No Fields from the Fields option.

Optimize Stills

Select this option to use still images efficiently in exported video files. For example, if a still image has a duration of 2 seconds in a project set to 30 fps, Adobe Premiere Pro creates one 2‑second frame instead of 60 frames at 1/30 of a second each. Selecting this option can save disk space if you used still images. Deselect this option only if the exported video file exhibits playback problems when displaying the still images.

Keyframe Every _ Frames

Select and type the number of frames after which the codec will create a keyframe when exporting video.

Add Keyframes at Markers

Select this option to create keyframes only where markers exist in the Timeline window. For this to work, markers must exist in the Timeline window (see Add markers).

Add Keyframes at Edits

Select this option to create a keyframe at edit points in the Timeline window.

Note: Some codecs do not provide control over keyframes. In such codecs, the above options will not be available.