key frame


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key frame

(graphics)
A frame in an animated sequence of frames which was drawn or otherwise constructed directly by the user rather than generated automatically, e.g. by tweening.
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i](m) after the m th key frame has been assigned is simply the content of the i th shot as regards its current key frames.
Content within the frames that does not change, such as the background of an image, can be referenced from key frame to key frame, often with dramatic storage and transport bitrate savings.
Most existing approaches to key frame extraction [6]-[8], based on measuring the differences between the last selected frame and the remaining frames and extracting a subsequent key frame if the measured difference exceeds the given threshold, are typically sequential processes leading to unpredictable results.
For example, most templates add letterboxes to convert SD source material to 4:3 output, which is seldom the desired technique, and key frame settings always opt for key frames at scene changes only, whereas most producers use periodic key frames and key frames at scene changes (Figure 2).
The key frame can realize codec by either the traditional video coding technology (e.
For Flash, Sorenson lets users select whether to enable auto key frames with a threshold slider and set the maximum key frame interval.
If the duration of one scene from a cut change is less than 32 frames, the frame in the cut change is determined not to be a I-frame but a key frame 1 (K1), later used for GOP partitioning.
Examining my newly encoded Flash files in Inlet Semaphore, I noticed that Rhozet's default parameters used a key frame setting of 30 and showed no "auto-key" frame feature and that the encoded files had some dropped frames.
Combining three distinctive elements, the newest Logitech keyboard offers you an innovative wave key frame, a U-shaped constant curve and a cushioned, contoured palm rest.
To experiment with different codecs, key frame settings, data rates, and other parameters, you'll have to render your file, analyze offline, then try different parameters.
Although the SI generated by interpolating has superior performance than that generated by extrapolating since the former can use the future information to generate SI, the extrapolation DVC is very desirable for low latency cases since the decoding process begins as soon as it receives the previous reconstructed frame without waiting for the arrival of the following reconstructed key frame.