Adobe Media Encoder CC - Manual (Page 49)

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Encoding and exporting
Last updated 12/15/2014
Crop and trim source before encoding
You can trim the video such that you encode and export only a part of the duration of the source video or audio item.
1 In the Export Settings dialog box, click either the Source tab or the Output tab.
2 To trim the video, set an In point (first frame) and Out point (last frame). You can set the In point or Out point to
the current time by clicking the Set In Point or Set Out Point button above the timeline, or by dragging the In point
or Out point icon in the timeline. You can also use the 'I' key to set an In point and the 'O' key to set an Out point.
The Source Range menu can contain the following choices:
• Work Area - Trims to the work area specified in Premiere Pro and After Effects projects
• In/Out - Trims to the In and Out marks set on clips or sequences from Premiere Pro and After Effects
• Entire Clip/Sequence - Uses the entire duration of the clip or sequence
• Custom - Trims to the In and Out marks set in AME
Note: Adobe Media Encoder honors timecode information in a source file. If the source starts from 00:00:05:00, then
the timeline for the item in Adobe Media Encoder also starts from 00:00:05:00, and not from zero. This timecode
information is included in the encoded output file.
3 To crop the image, click the icon in the upper-left corner of the Source panel, which will crop the output video.
4 To constrain the proportions of the cropped image, choose an option from the Crop Proportions menu.
5 Do any of the following:
• Drag the sides or corner handles of the crop box.
• Enter values for Left, Top, Right, Bottom, in pixels.
6 Click the Output tab to preview the cropped image.
7 From the Source Scaling menu on the Output panel, select the required scaling option. For more information on the
different scaling options, see
Scaling source frames .
Note: To revert to an uncropped image, click the Crop button again.
Scaling source frames
Use the options in the Source Scaling menu of the Export Settings dialog for better scaling of source frames within
output frames of a different size.
In Adobe Media Encoder CS6 and later, it is not necessary that you enable a crop before using this option. Also, this
setting is available for any output format with editable frame dimensions.