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Qualifications OCR Creative iMedia R093 Media industry - Distribution considerations

File Formats

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File Formats exam questions20 questions with mark schemes and example answers
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What is the name for the number of times a sound wave is captured every second?
Sample rate
What is meant by bit depth?
The number of bits used to represent each audio sample
Which term describes how many individual images are displayed every second in a video?
Frame rate
What is meant by a vector image?
An image built from lines, curves and fills that can be scaled
Which static image file format stores an image as uncompressed data?
TIFF
What is meant by UHD?
A video resolution above HD that includes both 4K and 8K
What does the DPI of an image measure?
The number of dots in one inch of a printed image
What is the pixel resolution of SD (standard definition) video?
720 x 576 pixels
Which audio file format is compressed but gives better sound quality than MP3 at the same file size?
AAC
Why does a bitmap image look blocky when it is enlarged on screen?
It is made from a grid of fixed pixels
What is the minimum resolution usually recommended for images that will be printed in a magazine?
300 DPI
A photographer wants the greatest possible control when adjusting a photo after the shoot. Which file format should be used?
RAW
An animated advert on a web page must stay sharp at any screen size and keep a very small file size. Which format is most suitable?
SVG
A recording is changed from 16-bit to 24-bit depth. What effect does this have on the sound?
Each sample is recorded more accurately
A music producer wants to archive master recordings without losing any sound quality. Which format is most suitable?
WAV
A video is recorded at a resolution of 1920 x 1080 pixels. Which type of resolution is this?
HD
A sports channel wants fast action in its videos to look smooth. Which property should be increased?
Frame rate
A TV production company records video that will be edited in detail later without losing any data. Which format is most suitable?
AVI
A producer converts an uncompressed WAV recording of a song into an MP3 file so it can be shared online. What is the main effect of this change?
The file size is smaller but some sound quality is lost
A web designer is told that a banner image must be 800 pixels wide and 320 pixels high. What does this describe?
The pixel dimension of the banner
A hotel supplies a photograph for its website, but the photo has a very low PPI. What is the most likely effect?
The photo will look blurred or pixelated on screen
A video is described as being recorded in 8K. What does the 8K refer to?
It has around 8,000 pixels across the width of the picture
How does an animated image file create the appearance of movement?
It stores several frames that are shown quickly in order
A video-sharing website decides not to use uncompressed video files. Why is this?
Their large file size makes them slow to send to viewers