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Use the frame from the video at the given time as the initial still image. Without a thumbtime parameter, a frame from the midpoint of the video is used. Time takes the form of hours, minutes and seconds separated by colons. For example: thumbtime=21 – Time syntax using seconds only; thumbtime=0:23 – Time syntax using minutes and seconds
GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats. The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible. Only part of a graphic should be ...
Framing an Image will automatically set the Image to the right side of the screen and frame it. (Like a picture frame) To frame an Image type in: [[File:Cscr-featured.svg|frame]] Which will appear like this: NOTE: This will force the image to be in its original size (to change the size use thumbnails or do not use the frame).
The images may also function as animation frames in an animated GIF file, but again these need not fill the entire logical screen. GIF files start with a fixed-length header ("GIF87a" or "GIF89a") giving the version, followed by a fixed-length Logical Screen Descriptor giving the pixel dimensions and other characteristics of the logical screen.
The frame data chunk (fdAT) storing frame's content. It starts with a sequence number, then has the same structure as the default image's IDAT chunk(s). Sequence numbers apply to both frame control and frame data chunks, which together follow a common sequence, thus enabling the order and timing of frames to be recovered should an APNG-unaware ...
These images were uploaded in the GIF format. It is suggested that the original sources be revisited and that a PNG or SVG file without compression artifacts be uploaded in their places. For more information, see Wikipedia:Preparing images for upload .
The background is assumed to be the frame at time t. This difference image would only show some intensity for the pixel locations which have changed in the two frames. Though we have seemingly removed the background, this approach will only work for cases where all foreground pixels are moving, and all background pixels are static. [2]
Dark-frame subtraction has been applied to the left half of the image. The right half is directly from the image sensor. A dark frame is an image captured with the sensor in complete darkness (i.e. with a closed shutter or the lens and viewfinder capped). Such a dark frame is essentially an image of noise produced by the sensor.