Bedienungsanleitung Adobe Premiere Elements 15 (Seite 252 von 275) (Englisch)

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Saving and sharing your movies

Last updated 10/4/2016

Video settings

The following options are available in the Video panel of the Export Settings dialog box (you see these when you share

a project using the Computer or Mobile Phones And Players options). Not all options are available for all presets.

Export Video Exports the video tracks. Deselect to prevent exporting video tracks.

Export Audio Exports the audio tracks. Deselect to prevent exporting audio tracks.

Video Codec Specifies the codec, or compression scheme, available on your system.

Quality Specifies the level of quality for the final file. A setting of 3.0 is a good general setting; however, video with lots

of motion may benefit from a higher setting. The higher the quality setting, the longer it takes to render the file.

TV Standard Conforms the output to the NTSC or PAL standard.

Frame Width [pixels] Scales the output frame’s horizontal aspect to the specified width.

Frame Height [pixels] Scales the output frame’s vertical aspect to the specified height.

Frame Rate [fps] Specifies the output frame rate for either NTSC or PAL formats.

Field Order (or Fields) Specifies whether the output file’s frames are interlaced, and if so, whether the upper or lower

field is dominant. No Fields (Progressive Scan) is the equivalent of progressive scan, the correct setting for computer

display and motion-picture film. Choose Upper Field First or Lower Field First (the default) when exporting video for

an interlaced medium such as NTSC, PAL, or SECAM. DV footage is generally Lower Field First. However, some newer

nontape camcorders produce video with reverse field order, so make sure to check your camcorder’s documentation.

Pixel Aspect Ratio Specifies the ratio of each pixel’s width to its height, which determines the number of pixels required

to achieve a given frame aspect ratio. Some formats specify square pixels, while others use nonsquare pixels.

Keyframe Intervals (seconds) Specifies the number of seconds after which the codec will create a keyframe when

exporting video.

Bitrate Encoding Specifies whether the codec achieves a constant or variable bitrate in the exported file.

In general, a frame is complex and more difficult to compress efficiently if it contains great detail, or if it significantly

differs from surrounding frames, as it would in a scene containing motion.

note: When comparing CBR and VBR files of the same content and file size, a CBR file may play back more reliably over

a wider range of systems, because a fixed data rate is less demanding on a media player and computer processor. However,

a VBR file tends to have a higher image quality, because VBR tailors the amount of compression to the image content.

CBR Constant Bitrate (CBR) keeps the data rate of the exported file constant within a fixed limit you specify. Since the

complex sections are held to the same bitrate as the simple, they are more likely to show the quality-degrading artifacts

of compression.

VBR Variable Bitrate (VBR) allows the exported file’s data rate to vary within a range you specify, allocating higher

bitrates, and therefore less compression, to the more complex sections and lower bitrates to the less complex.

Bitrate Specifies the number of megabits per second you want the encoded file to have. This option only appears if you

select CBR as the Bitrate Encoding option.

The following options appear only if you select VBR as the Bitrate Encoding option:

Minimum Bitrate [Mbps] Specifies the minimum number of megabits per second you want the encoder to allow. The

minimum bitrate differs according to the format. For MPEG2-DVD, the minimum bitrate must be at least 1.5 Mbps.

Target Bitrate [Mbps] Specifies the number of megabits per second (Mbps) you want the encoded file to have.

Maximum Bitrate [Mbps] Specifies the maximum number of megabits per second you want the encoder to allow.

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