Read Access & Presentation Rate in Multimedia

[shivajikobardan]

source-: http://ce.sharif.ir/courses/84-85/2/ce342/resources/root/BOOK/Multimedia/215814- Chapter 16.pdf
page number 7

Questions-:

1) What is read access?

2) What is presentation rate?

3) In fast forward, some data units are skipped but the valid life span for each frame is not changed.
what does this highlighted line signify?

4) In the slow forward process, presentation of individual frame occurs twice or several times. Does it really? Aren't they different frames when we do 0.5x? Are they really same frames?

 

[Future Bruno]

Answers-:1) Read access is the ability to open and read a file or data stream. It allows the user to access the contents of the file or data stream, including the audio and video streams, for playback.2) Presentation rate is the speed at which the video frames are presented to the viewer. This can be changed by the viewer, allowing them to slow down or speed up the playback of the video.3) The highlighted line signifies that in fast forward, some data units may be skipped but the valid life span for each frame is not changed. This means that the frames are still valid even though they are being presented faster than usual.4) In the slow forward process, frames are presented slower than normal, but the frames themselves remain the same. They are not different frames, but instead the same frames are presented multiple times. This allows the viewer to view the video at a slower pace without missing out on any details.