Creation and Edition of Multimedia Content
CREATION AND EDITION OF MULTIMEDIA CONTENT
Tools for creating mutimedia content
Information processing is an essential part of modern society.
In this topic we’ll learn to record, produce and edit multimedia material in its different formats.
Multimedia design covers the design and design and processing of texts, photos, videos, sounds and animations,
manipulated and stored on a digital medium. The areas where it is used include graphic design, desktop
publishing, web design and video design.
manipulated and stored on a digital medium. The areas where it is used include graphic design, desktop
publishing, web design and video design.
Apart from the classic ways of acquiring multimedia material (e.g., cameras, microphones, video cameras, etc.)
modern society now has mobile devices, such as smart phones and tablets, which are extremely useful for
obtaining this material. In addition, mobile devices usually include specific software for editing multimedia
material and publishing it directly online.
modern society now has mobile devices, such as smart phones and tablets, which are extremely useful for
obtaining this material. In addition, mobile devices usually include specific software for editing multimedia
material and publishing it directly online.
Consequently, we can now talk about hipermedia. This term refers to the fact that images, sounds and
animations, among others, can be added to hypertext (web page links).
animations, among others, can be added to hypertext (web page links).
This topic is divided into four large blocks, each referring to different areas multimedia content:
Editing bitmap images.
Bitmap are images made up of pixels (each pixel is a small square storing information on colour, brightness,
contrast, etc.).
contrast, etc.).
GIMP: is the best free alternative to commercial digital editing software. It lets you process vector drawings and
digital photos.
digital photos.
Beginners
https://www.youtube.com/watch?v=bqF4X1bs6NA&list=PLMK2xMz5H5ZuPzp5FfEIDjeYavpyRgpcb Learn
GIMP Tutorial - Day 1 - Size Crop Rotate and Flip
GIMP Tutorial - Day 1 - Size Crop Rotate and Flip
Editing vector graphics.
Vector images are digital images consisting of independent geometric objects (segments, polygons, arcs, etc.),
each of which is defined by mathematical calculations. The advantage of this type of image is that the size can
be increased without loss of quality and each part can be easily identified and modified.
each of which is defined by mathematical calculations. The advantage of this type of image is that the size can
be increased without loss of quality and each part can be easily identified and modified.
https://www.youtube.com/watch?v=fy9Pby0Gzsc Vector VS Bitmap
https://www.youtube.com/watch?v=zUIOEXssTSE Inkscape Video Tutorial
https://www.youtube.com/watch?v=ySoTkwoXSd4 Inkscape Video Tutorial 2
https://www.youtube.com/watch?v=sSHUP6xDRHU Inkscape Video Tutorial 3
https://www.youtube.com/watch?v=_qqTAjBaeJ0 Inkscape Video Tutorial 4
https://www.youtube.com/watch?v=DXSodpGd9nI Inkscape Video Tutorial 5
https://www.youtube.com/watch?v=y_Y5HlTBZog Inkscape Video Tutorial 6
https://www.youtube.com/watch?v=IyuvU8TpI3o Inkscape Video Tutorial 7
https://www.youtube.com/watch?v=PZxE7KhyGdY Inkscape Video Tutorial 8
Audio editing
Audio editing is the process by which a sound file is produced from one more previously recorded files, mixing
sounds, applying effects and filters, and so on: in short, modifying their characteristics.
sounds, applying effects and filters, and so on: in short, modifying their characteristics.
https://www.youtube.com/watch?v=hv3eAD_HH6Q top edition programs
In this chapter, we’ll find out what codecs are and learn about the different audio formats (with or without
compression and with or without loss), among other things.
compression and with or without loss), among other things.
Audacity is the open source audio recording and editing program we’ll learn to use over the following pages.
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Video editing
Video editing consists of assembling video, audio and potos, etc. Into a video film, including titles, credits,
effects, frame transitions, etc.
effects, frame transitions, etc.
The program we are going to use to practise is Microsoft Windows Movie Maker.
https://www.youtube.com/watch?v=O99NXVHfqMs LEARN MOVIE MAKER IN 15 MINUTES !
TUTORIAL FOR BEGINNERS
TUTORIAL FOR BEGINNERS
Bitmap images
Digital bitmaps are images made up of pixels (each pixel is a small square storing information in colour
brightness contrast, etc).
brightness contrast, etc).
The images we take on mobile phones, tablets or photo and video cameras are bitmap images.
The main drawback is that they lose resolution when enlarged.
Characteristics
Dimensions or size. The size of a bitmap image is defined by two whole numbers corresponding to the width
and height of the image in number of pixels. For example, 1600x 1200 (widthx height).
and height of the image in number of pixels. For example, 1600x 1200 (widthx height).
Resolution: This parameter indicates how much detail can be viewed in an image. We can define it as the
number of pixels per inch (1 inch = 2,54 cm), i.e. it expresses the densitiy of pixels in the image. Logically the
more pixels there are to an inch, the better the image will look and the more it can be enlarged without losing
quality. Resolution is expressed as pixels per inch (ppi).
number of pixels per inch (1 inch = 2,54 cm), i.e. it expresses the densitiy of pixels in the image. Logically the
more pixels there are to an inch, the better the image will look and the more it can be enlarged without losing
quality. Resolution is expressed as pixels per inch (ppi).
A print resolution of 200 ppi or above can be described as good quality resolution. Internet images generally
have a máximum of 70 ppi, because monitors are incapable of displaying a higher priint resolution. If we
increase the image resolution, this affects the space it occupies when saved because increasing the number of
ppi means we store more information and therefore the image will occupy more disk space.
have a máximum of 70 ppi, because monitors are incapable of displaying a higher priint resolution. If we
increase the image resolution, this affects the space it occupies when saved because increasing the number of
ppi means we store more information and therefore the image will occupy more disk space.
To find out the máximum print size of a bitmap image, we have to divide the width and height (in pixels) by the
resolution (in pixels per inch).
resolution (in pixels per inch).
Example
Calculate the máximum print size (in cm) of a photo with a print resolution of 180 ppi and a maximum quality of
3648 x 2736 pixels.
3648 x 2736 pixels.
To obtain the print size, divide the width and height by the resolution. To convert into centimeters, remember
that 1 inch = 2,54 cm.
that 1 inch = 2,54 cm.
b) Calculate the total resolution of the digital camera used to take the photos (i.e. the total number of
megapixels). To find out the resolution of the digital camera we need to know how many pixels wide and high
the image can be and then multiply them).
megapixels). To find out the resolution of the digital camera we need to know how many pixels wide and high
the image can be and then multiply them).
3648 x 2736 = 9980928 pixels = 9.98 megapixels
Repeat the previous operation for a print resolution of 200 ppi. Why is the print size smaller than in the example
GIMP 2.8.16
The GIMP histogram is a graphic representation of pixel luminosity in an image. The left of the histogram shows
the dark shades of grey and the right shows the brightest highlights. To access the histogram, go to
Ventanas/Dialogos empotrables/Histograma.
the dark shades of grey and the right shows the brightest highlights. To access the histogram, go to
Ventanas/Dialogos empotrables/Histograma.
The program allows different parameters to be altered to retouch the images:
Exposure: the amount of light captured in the image. For correct exposure, the histogram data must be centred,
with no peaks or troughs. The mean should be as close to possible to 128. The deviation is an indication of
contrast and should be between 40 and 90.
with no peaks or troughs. The mean should be as close to possible to 128. The deviation is an indication of
contrast and should be between 40 and 90.
We can correct the exposure levels by going to Colores/ Niveles and moving the exposure triangles under the
histogram.
histogram.
Brightness and contrast:
When we talk about brightness we are referring to how bright an image is, i.e., if it is light or dark. Contrast
shows us the difference in intensity between a given point and its surrounding, which allows us to emphasize
colours. We can modify these parameters in Colores/Brillo y contraste.
shows us the difference in intensity between a given point and its surrounding, which allows us to emphasize
colours. We can modify these parameters in Colores/Brillo y contraste.
https://www.youtube.com/watch?v=XcL7TIolm6Q
Gimp Tutorial: How to brighten shadowed subjects
Gimp Tutorial: How to brighten shadowed subjects
Hue, lightness and saturation. Hue is the colour of the image, lightness is the degree of light or dark saturation
is the purity of the colour. We can modifiy these parameters in Colores/Tono y saturación.
is the purity of the colour. We can modifiy these parameters in Colores/Tono y saturación.
Colour curves and levels. The curves tool, one for the most powerful in the program, allows us to correct the
colour and tone of the image, adjusting the lightness and darkness of each pixel. The levels tool can be used to
level the range of colours in a layer. Both are accessed from the Colores menu.
colour and tone of the image, adjusting the lightness and darkness of each pixel. The levels tool can be used to
level the range of colours in a layer. Both are accessed from the Colores menu.
Colour balance. Another tool that allows us to adjust the colour is the colour balance. This tool is especially
useful for photos taken indoors, with a camera set for outdoor photography. It is accessed from
Colores/Balance.
useful for photos taken indoors, with a camera set for outdoor photography. It is accessed from
Colores/Balance.
Gimp: Course For Beginners 10: Correct a Color Cast With the Color Balance
Practical
1 Scalling, saving and exporting images.
https://www.youtube.com/watch?v=7iTmGr9YDVw Save or Export an Image as JPEG, PNG,
GIF, etc - GIMP 2.8 for Beginners
GIF, etc - GIMP 2.8 for Beginners
Changing the size of the canvas and cropping.
2 Retouching images
How to Retouch Photo in Gimp
Heal tool
Clone tool
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