Adobe Media Encoder - Manual (Page 59)

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Note:
Note:
To zoom into and out of the preview image, choose zoom level from the Select Zoom Level menu above the timeline.
You can also zoom out by pressing Ctrl+- (hyphen) (), or Command+- (hyphen) (Mac OS). Zoom in by pressing Ctrl+= (equal sign) (Windows)
or Command+= (equal sign) (Mac OS). These keyboard shortcuts use the main keyboard, not the similar keys on the numeric keypad.
Timeline and time display
A time display and a timeline are located under the image viewing area in both the Source panel and Output panel. The timeline includes a
current-time indicator, a viewing area bar, and buttons for setting In points and Out points.
To move the current-time indicator, click or drag the current-time display or drag the current-time indicator. You can also type the timecode directly
in the current time display to move the CTI to the specific frame.
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
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 Crop The Output Video button in the upper-left corner of the Source panel.
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 .
To revert to an uncropped image, click the Crop The Output Video button again.
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