For speed-forward is moving forward through the recording at a faster pace than is normally played. Records are usually audio, video or computer data. This colloquial is known as 'f-forwarding'. In buttons and player interfaces, this function is usually represented by two solid arrows pointing to the right and these distinctive icons are correctly recognized by 75% of European consumer samples.
Video Fast forward
Usage in audio
To achieve a certain part of a song, one can fast forward through a cassette by pressing a button (often labeled "Fast Forward" itself) on a tape deck containing the tape. Motor tape deck is activated at a higher speed than usual - for example, doubling the standard 1-7/8 ips 1/8 "cassette playback speed and can be stopped at the end of a recording, pressing from the" Stop "button on the deck (or other button mechanism which releases the button), or simply by lifting the finger from the "Fast Forward" button.
Fast-forwarding is the opposite of rewinding, where recordings, music, etc., are moved backwards at the user's discretion. In both operations, due to sound distortion, the volume is usually muted or greatly reduced.
With the advent of cheap digital music media, fast-forwarding is likely to lose its past meaning associated with the speed of a tape deck motor (or turntable record, or other device that allows fast-forwarding) and is now possible, especially as other analog cassettes and media are used less by younger generations, only applicable to forward moving operations within the recording time frame - achieved today by simple clicking, dragging slide images, or even through voice recognition software. (However, some CD and DVD players offer fast ribbon-style redirects, so users can detect when goals are reached and stopped.)
Maps Fast forward
In-video usage
Analog VCRs provide fast-forward by simply rotating cassettes faster. The loss of the video sync result is accepted as it is still possible to make approximately what happens in the video to find the desired play point. Modern digital video systems such as DVRs and Video on Demand systems use 'trick mode' to present seemingly faster streams by simply displaying the selected frames.
Unlike analog video streams where only serial access is possible, digital video allows random access to media, which increases the likelihood of alternative algorithms and fast forwarding visualization. In streaming video formats, such as H.264, fast forward algorithms use I-frames to take video samples faster than normal speeds. In streaming video, fast-forward represents a useful search or exploration mechanism, but introduces additional network overhead when non-I-frames are transmitted in addition to the viewed I-frames and extra computational complexity in video transcoders. Finding more bandwidth-efficient networks and computationally efficient algorithms to accommodate forward speed and normal speed is an active research area.
When fast-forwarding is used as a search mechanism (sometimes called fast-forward video surrogate ) in the video library, the question arises as to what is the best fast-forward strategy for effective browsing. The main exchange is between fast forward speed and ability to understand video. One study concluded that a 1:64 replacement ratio (ie, showing one frame of every 64) allowed most participants to adequately perform on various tasks related to the understanding of the video.
Metaphorical usage
Fast and similar video footage is familiar enough for metaphorical use to be developed, e.g. " The court does not want to know about your aunt's bad hips." Fast forward when the fight starts. "
References
External links
- Audio Cassette Deck Deck Mechanism, pictorial description of audio cassette transport mechanism, including fast forward mechanism
Source of the article : Wikipedia
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