Movies

Movies

Menu providing facilities to record, play and edit DigImage movies. The frame rate and resolution achievable are a compromise limited by the speed of the PC and its hard disk.

For details of the format of movie files, refer to the help on [R Record movie].

B Create blank movie.

A movie file containing the header information but no images can be created with this option. This movie file may subsequently have images added to it with [F Insert single frame in movie] and/or [S Insert sequence in movie].

D Details of movie.

This option reads the header information from the requested movie file and makes it available to the user through the command file return variables. If a command file is not running, the information is displayed onscreen.

E Extract single frame from movie.

This option allows a single image to be extracted from a movie file.

F Extract sequence of frames from movie.

This option extracts a sequence of images from a movie file.

I Insert single frame in movie.

This option inserts a single image in an existing movie file. The movie file may have been created using [B Create blank movie] or may have been recorded using [R...] or [S...].

M Playback movie on computer monitor.

Display a movie on the computer monitor. The movie may be speeded up (within the limitations of the hardware) or slowed down as desired. This option is functionally identical to [P Play back movie] except for its output devices. Note that playing the movie on the computer monitor may be faster for a PCI bus machine than using the frame grabber card.

P Play back movie.

Replay a previously recorded movie.

R Record movie - single pass.

This option provides the main mechanism for recording movies. It records with either manual or computer controlled synchronisation in a single pass. If the requested frame rate exceeds that the computer is capable of, then frames will be dropped and the maximum achievable rate will be used. The option [U Record movie using mask - single pass] offers the same features plus the ability to perform ALU operations during acquisition.

S Record movie - multi pass.

This option provides an alternative computer controlling recording facilitiy which will achieve up to the full video frame rate by executing multiple passes until all the images are recorded. Note that the frame rate for a single pass is slightly lower than that achieved by [R Record movie - single pass].

T Record short movie - fast single pass.

This option provides an alternative mechanism for recording short movies at a higher frame rate than [;KMR Record movie - single pass] while maintaining a single pass. It records with either manual or computer controlled synchronisation in a single pass. If the requested frame rate exceeds that the computer is capable of, then frames will be dropped and the maximum achievable rate will be used.

U Record movie using Mask - single pass.

This option is a variant on [R Record movie - single pass]. It provides the same basic abilities with the additional functionality of providing ALU operations during the recording process.


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Stuart Dalziel, last page update: 19 February 1996