Image, Video, Audio Formatting

Question 1

Describe the difference between mp4/mpeg4, wav, avi, webm, ogg, mov, wmv, and flash.

Answer 1

*mp4 or mpeg4: an extension of .jpeg (motion .jpeg) intended to compress sequenced images
*wav
*avi (audio video interleave): provides different compression levels according to the individual standards used for audio and video
*webm
*ogg
*mov: video compression file format following Apple standards
*wmv: video compression file format following Microsoft standards

Question 2

Difference between xml, html, pdf, and docx?

Answer 2

.

Question 3

Which attribute is used to specify the format of a video file?

Answer 3

.

Question 4

How do you embed an image in CSS vs in HTML?

Answer 4

.

Question 5

What is the difference between Bitmap, JPEG, PNG, SVG, and Vector images?

Answer 5

.

Question 6

Which graphical image type scales without losing quality?

Answer 6

.

Question 7

What are the following, and are they HTML or CSS:
img, canvas, var, iframe

Answer 7

.

Question 8

Which HTML5 element is used to draw graphics on a web page?

Answer 8

canvas

Question 9

What is MIME?

Answer 9

.

Question 10

What is the purpose of the WebM MIME type?
Uses a file format to steam online videos.

Answer 10

Uses a file format to steam online videos.

Question 11

Which property is used in CSS3 to specify the left or right alignment of an image?

Answer 11

.

Question 12

What do the following HTML5 elements do:
canvas, figure, audio, video.

Answer 12

.

Question 13

Which HTML5 element has a poster attribute?
Video

Answer 13

Poster attribute determines the static image (thumbnail) before video is played. Otherwise video will show just a black screen before you hit play.

Question 14

Which HTML attribute is used with the <img></img> tag to display text if the image fails to load?

Answer 14

<img></img>

Question 15

Imported images are based on their ___ and are called ___.

Answer 15

pixel representation

rasterized images

Question 16

What are the differences between rasterized and created images?

Answer 16

Rasterized images are based on their pixel representation and are imported.

Created images are vector/SVG images based on their component description, i.e., a composition of predefined shapes such as circles and polygons.