Trimmer Control

Once a clip is loaded, you can navigate and edit it, using the Clip Trimmer controls.

The following boxes are situated under the preview window:

In box – displays the In point timecode

Outbox –displays the Out point timecode

Duration box – displays the clip duration. It is equal to the difference between In and Out points.

After entering the In and Out timecodes, the Duration value will be calculated automatically. Moreover, after entering the In and Duration values, the Out point timecode will be calculated automatically. It is possible to lock the In, Out or Duration value (but not all the three of them, of course) by clicking on the lock icon to the right of the box. Thus, you can protect their values from changing (by mistake, for example).

To enter values in the In, Out or Duration box, you can use the arrows beside them or type numbers in the boxes.

Position box contains the timecode of the currently selected point in the clip. If you type another timecode in this box and press <Enter>, the marker will move to the relevant position.

Total Duration box – displays the original, untrimmed duration of the clip.

Details box – it shows the part of the clip, enclosed in the zoom frame.

The Trim bar visualizes the clip length and the clip markers.

 

The Zoom frame is a yellow square in the trim bar. It defines what part of the clip is being shown in the Detail View. It is quite useful for long clips. You can move or resize the zoom frame, by mouse dragging. You can define a new Zoom area by drawing a rectangle through dragging the mouse while holding its right button.

 

SPLIT button  - splits the clip and thus defines separate sections in the clip. After splitting the clip, each new clip section appears as a separate row in the play list. You can play them separately, change their order, insert other clips between them, etc.

You can define In/Out points for each section of the split clip. The In, Out and Duration boxes display information about the selected section. Multiple In/Out definitions are used for skipping some parts of the clip during its playback. Thus, you can exclude existing commercials, titles, etc. from the original clip.

You can create separate sections also by pressing repeatedly the In/Out buttons. Pressing the In button after an existing Outpoint, creates a new section after the existing one. Pressing the Out button before an existing In point, creates a new section before the existing one.

IN button  – marks the In point for start of playback in X-Pert Playout. The IN point marker is colored green and by default it is at the beginning of the clip.

OUT button – marks the Out point for end of playback in X-Pert Playout. The OUT point marker is colored red and by default it is at the end of the clip.

You can set an In/Out point, by dragging the IN/OUT marker on the trim bar or by entering timecode directly into the IN/OUT box.

The IN/OUT markers show the frame before/after (i.e. if the marker is on the Out point, you actually see the next frame, but not the last frame of the trimmed part.).

NOTE: For MPEG files, the trimming is GOP accurate! IN points can be positioned only on I-frames, while OUT points can be positioned on I- or P-frames. Depending on the stream’s GOP size, this may lead to a slight inaccuracy, limited to half a GOP for the IN points and a couple of frames for the OUT points. If the stream’s GOP size is one (I-frames only), then trimming will be frame accurate.

NOTE: Even if you specify In and Out points in a particular timecode, some playout plug-ins (for ex. IPPUMP) will correct them to nearest I-frame for IN point or I- or P-frames for OUT point. Thus outputted duration could be shorter then specified.

Play button  starts playing the clip. Then it transforms to pause/resume.

If you want to play only the trimmed part (i.e. between the IN and OUT points), press <Shift>+ Play.

Stop button  stops the playback and “rewinds” the clip to its beginning.

Pause /Resume button. It stops and resumes the clip playback from the same timecode position.

Button  - skips one frame forward

Button  - reverts to one frame backward

Button  - fast forward (if it is possible)

Button  - rewind (if possible)

Button  - moves to the next mark point (in/out/bookmark)

Button  - moves to the previous mark point (in/out/bookmark)

Add Zone button  - marks the beginning of a zone. A yellow point appears in the trim bar.

Delete Zone button  - deletes the selected zone point.

Open button will load a clip in the Trimmer window.

Export button  - opens a dialog box for exporting the trimmed clip as a file.

If you have divided the clip into several sections, they will appear in the Export list as different parts. Select which of them to export by checking the checkboxes in front the relevant section. Besides, you can change their order using the up and down arrows.

If you choose to export several parts at a time, you have to specify the way they should be exported: as separate files (Export selection(s) as multiple files) or as a single file ( Export selections as a single file).

Pressing the Export button in this dialog opens another dialog box for you to specify the file name and store location and to begin the export.

To delete a clip section, select it and press <Ctrl>+<D>.

To reset the original clip length, press <Ctrl>+<BkSp>.

The Throttle has three levels – Low, Normal and High. Each of them “tells” the CPU what priority to give to the export process.

The higher the priority, the slower the other simultaneously running processes on the machine, and the quicker the export made.

IMPORTANT! Export works only for MPEG2 files.

NOTE: Export is not frame accurate. It is GOP accurate! IN points can be positioned only on I-frames, while OUT points can be positioned on I- or P-frames. Depending on the stream’s GOP size, this may lead to a slight inaccuracy, limited to half a GOP for the IN points and a couple of frames for the OUT points. If the stream’s GOP size is one (I-frames only), then trimming will be frame accurate.