Previewing video

The Video window is the simplest window in ACID, having only a few buttons. The window is used only to preview the video from the timeline and cannot he used to preview video from the Explorer window. The Video window can be made visible from the View menu by clicking Video or by pressing Alt-I-4 on your keyboard. The Video window can he set to any size and can he resized by dragging the edges.. The video inside the window is locked into specific aspect ratios relative to the original source video to prevent distortion and improve playback performance. 

Connect your camcorder to your IEEE-1394 DV card and turn it on in playback mode (VTR). 

Connect the video out (RCA jack or S-VHS) from the camcorder to your television. You do not need to connect the audio cables, since audio is not sent through the DV card for preview purposes. 

From the Options menu, select Preferences and then, in the Preferences dialog box, go to the Video tab. From the External monitor device list, select the device that you want to use. Usually, the only DV device listed here will be OHCI Compliant IEEE 1394/DV. Since this is a hardware-dependent feature, only DV cards that meet this standard will work. When your camcorder is not connected and powered up, the Details window in the dialog will read Device Unavailable. You can use source media files that are not DV files these will be converted to DV on the fly for previewing purposes. 

In some cases, due to hardware issues, the video on the External Monitor might not be synchronized with the audio, which is obviously a critical issue in ACID. You should be very wary of this potential problem. If you notice that the video in the Video window in AQD is precisely synced with your audio, but the video on the external monitor is not, you can change the Sync offset to bring the video back in line. 

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Preview videos and use only the information that is necesssary. 

For an effective use of films or video cassettes, preparation and follow-up are two very important steps to be taken by a teacher. Teacher should select the film or video cassette which goes along with the topic. The film or video cassette should be previewed and important points to be covered in the lesson should be outlined. 

Using metadata and browsing key frame-. Many openly available video search systems allow search entirely on video metadata like date, author, video title, summary, author, genre, etc. Some systems provide key frame or storyboard previews of selected videos to assist the learner to preview the lecture video [3,4]. Key frames are single images or video frames derived from shots as representatives of complete shots. These frames are basically used for content-based video management. Open video project [5] and Internet archives [6] are based on metadata search techniques. 

Notice that the Video Preview and the Mixer windows are in their own regions by themselves. This allows these windows to remain visible at all times for important previewing and monitoring of project playback. Windows in the docking area can be rearranged by dragging them by the handle on the left side of the window. 

The Video window (see Figure 1.18) is a simple window that allows you to monitor (preview) the video component of a project. With the appropriate hardware, the ontpnt from this window can be sent to another television monitor. There are no editing controls in this window. 

All audio events, video events, and MIDI events are contained in tracks on the timeline. Therefore, you need to create a new track before you can create an event To create a track, browse for and preview media files (loops) in AQD Explorer and then double-click one to create a track. 

Adding video to AQD is mnch the same as adding andio and MIDI. First, browse for video media using ACID s Explorer window, then add a video track, and draw an event on the timeline. Unlike andio media files, video files cannot be previewed as you browse for tbem in the Explorer window. Here s what to do ... 

Select video files (single-click) in the Explorer window. Only the audio will be previewed. You may turn on antomatic previewing by clicking the Auto Preview button on the Explorer window toolbar. 

There should be a short pause before the video is displayed on your television. You can hide or minimize the Video window in ACID to regain workspace area and use the television exclusively for previewing. Figure 11.3 summarizes the configuration. 

When dropping a marker on an exact frame boundary at a high zoom level, you may notice that it does not seem to be at the boundary after you zoom back out Trust the marker and not the tbmnbnail representations on the video. Watch the Video preview window to verify this, because it always displays the exact frame at the cursor position. In this situation, the arrow keys are very useful for moviug hack and forth in the project a fiame or so at a time. 

The Video tab is primarily used to configure DV FireWire cards to output a video signal to a television monitor for preview purposes. The reason for doing this and how to configure this... 

Inform the typical worker that you are putting together a video that will be shown to new hires so that they get a preview of the type of tasks they will be asked to perform when they actually start working. 

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