Factors affecting file size
Factors affecting file size
Digital media often needs lots of fast-access primary and secondary storage, powerful processing and a variety of human expertise for their development. some of the factors that will influence the amount of storage required include the type of media, the resolution and the amount of colour used in the image.
Memory size- memory refers to the amount of data that can be stored. Primary and secondary storage requirements include RAM and the ability to use hard disk space or other devices.
Processing speed- refers to the number of operations that can be carried out by the CPU in any set period of time. The faster the processor the more operations that can be performed.
Colour palette- colour considerably increases the storage requirements of media as both the number of the pixels on the screen and the bit depth of each pixel is increased. The larger the number of colours used the larger the size of the storage required.
Compression- compression is the process of reducing the physical size of data. Decompression is the process of converting the data back to its original form during retrieval of the data. There are two methods of compressing data: lossy and lossless. With lossless compression, the data is identical to original data. This takes more space but gives better data quality. Using lossy compression, some data is removed and compressed so that the data is different from the original data- usually in insignificant ways.
Sampling rate- sampling rate is the specific amount of times the piece of data is taken from a sound .Whilst the sample is occurring the amplitude of the wave is measured and changed in to a number which compares the quality of the sound. When the sampling rate is high the sound is of higher quality and large file size.
Frames per second- Video or animation are constructed using frames and the speed they are play at is the frame rate which is measured by the frames per second (fps) When the fps is higher there are frames per second and therefore the more clearer and polished the video or animation will turn out to be.
Digital media often needs lots of fast-access primary and secondary storage, powerful processing and a variety of human expertise for their development. some of the factors that will influence the amount of storage required include the type of media, the resolution and the amount of colour used in the image.
Memory size- memory refers to the amount of data that can be stored. Primary and secondary storage requirements include RAM and the ability to use hard disk space or other devices.
Processing speed- refers to the number of operations that can be carried out by the CPU in any set period of time. The faster the processor the more operations that can be performed.
Colour palette- colour considerably increases the storage requirements of media as both the number of the pixels on the screen and the bit depth of each pixel is increased. The larger the number of colours used the larger the size of the storage required.
Compression- compression is the process of reducing the physical size of data. Decompression is the process of converting the data back to its original form during retrieval of the data. There are two methods of compressing data: lossy and lossless. With lossless compression, the data is identical to original data. This takes more space but gives better data quality. Using lossy compression, some data is removed and compressed so that the data is different from the original data- usually in insignificant ways.
Sampling rate- sampling rate is the specific amount of times the piece of data is taken from a sound .Whilst the sample is occurring the amplitude of the wave is measured and changed in to a number which compares the quality of the sound. When the sampling rate is high the sound is of higher quality and large file size.
Frames per second- Video or animation are constructed using frames and the speed they are play at is the frame rate which is measured by the frames per second (fps) When the fps is higher there are frames per second and therefore the more clearer and polished the video or animation will turn out to be.
Effect on Digital Media
The factors memory size, processing speed, colour palette, compression ,sampling rate, frames per second all in some form effect the production or the result of digital media.
- Memory size effects digital media as when a digital media product is
large you will need more storage space to store it and it will use more
internet data to load the website, especially when it is movies or videos or
large pictures these use more memory to store as they are larger files with
more components to them.
- Processing speed effects digital media as if the processing speed is
faster and more reliable the digital media product will load up more quicker, playing
with continuity and less buffering. When a website with many different types of
data is loading it will take more time for the website to load unless your
processing speed is of high quality.
- Different colours used in creating digital media products effect the
final product as more variety of colours use up more memory as there are more
types of pixels to be loaded and stored.
- Sampling Rate effects digital media as when samples are taken from a
particular piece of music it can effect the overall quality of the music.
- The amount of frames per second can effect digital media as when there
are less frames the output is of lower quality and when there are more frames
the final product is of higher quality with a clearer video and polished
finish.
- Compression can effect the quality of the digital media product and may
even delete some unnecessary data. This in turn will result in an unfinished
digital media product. Some forms of compression give better quality but take
up more space or take less space and produce low quality.
There are many factors which effect the digital media product and we have to avoid the negatives in order to attain a high quality product.