User`s manual

DIGITAL-LOGIC AG MPC40/A/B/C, MPC41 Manual V1.4C

“Options”:

Preview. Sets the display area to display an image stored in the frame buffer after capture.

Overlay. Sets the display area to display the video-input signal from the hardware source (before capture).

“Capture Video Sequence”: This lets you specify parameters for the capture session and the video sequence, including

the video and audio format.

There are the following options:

Frame Rate. Sets the number of frames per second to capture. More frames per second provide a better quality but re-

quire more storage space and a faster data-transfer rate. The maximum is determined by the capabilities of your capture

system.

Enable Capture Time Limit. Specifies whether to capture for a preset length of time. If this option is selected, you can

type a time-limited value in the Seconds box.

Capture Audio. Specifies whether to capture audio while capturing video, ensuring close synchronization between the

audio and video tracks.

“Capture File”: A file created on the hard disk for the purpose of storing captured video and audio data.

Troubleshooting:

A video source for real-time capture (such as a video camera or video recorder) pro-

vides an uninterrupted stream of information to the capture hardware. The capture

hardware copies each frame of the video sequence (and each portion of audio) and

transfers it to the disk before the next frame of data enters the capture hardware. A

video frame contains one image of the video sequence.

Real-time capture demands a fast computer and hard disk. The computer must process and store the incoming video

frame before the next frame is received in the capture board. If the system gets slower, during capture, frames of video

data are dropped (lost).

Note During capture, your hard disk might not keep up with the frame rate you specified. If this occurs, the program in-

serts blank frames where it is unable to store frame data. When the capture session is completed, the program reports

the number of blank or dropped frames. Dropped frames use minimal storage space (8 bytes) and do not adversely af-

fect audio/video synchronization.

Note: Using enough fast frame rate on a slow computer, will might cause a crash or hanging your system.

This software release has been tested on a DLAG PENTIUM 166 computer, showing good results under the following

conditions:

Video format – 320x240, 8 bit.

a. Overlay “on”, frame rate = 5 fps.

b. Preview and Overlay “off”, frame rate = 8 fps.