Dropped Frames; Capturing Single Frames - Ulead MEDIASTUDIO PRO 7 User Manual

Dropped frames

If your PC and video capture board have difficulty supporting a specified
frame rate, a message box may appear after capturing detailing how many
frames were captured and, of those, how many were 'dropped' frames.
(This message box is controlled in the Advanced tab of the Video Capture
dialog box, see above.) Dropped frames are 'phantom' frames which are
created to ensure that the frame rate is maintained. Whenever Video
Capture or some other device encounters a dropped frame on playback, it
keeps displaying the previous frame until the dropped frame or frames
have passed. If a video has dropped a large number of frames, then the
playback will look very choppy. To reduce the occurrence of dropped
frames, you can lower the quality settings for your video. For example, try
a smaller frame size, higher compression, or a lower frame rate.

Capturing single frames

Capturing a single frame does not require you to specify as much
information as when capturing a video sequence. This is because the
single frame adopts the currently displayed video frame size and data type,
and is passed directly to your chosen destination – to the clipboard or to
disk. You can capture single frames from either an existing video file or
directly from a video source. In the program, a camera shutter beep is
available as a reminder. Also, there are three output destinations:
Production Library, Image File, and Clipboard. Also, a Jog bar is also
available to make capturing a single frame easier for you.
To capture a single frame:
1. Connect your DV camcorder to your IEEE-1394 interface card.
Note: When acquiring video from an analog source, be sure that the analog
capture card you are using supports RGB or YUV capture.
2. Turn your camcorder on and set it to Play mode (or VTR/VCR mode).
3. Run Video Capture.
VIDEO CAPTURE: CHAPTER TWO 103