Streaming Video

Let’s Stream!Using iMovie 2

An overview of video for streaming for the Internet

Workshop Agenda

Video in instruction Tools and tips for streaming video Overview of iMovie 2 Hands-on with iMovie 2

Importing Editing and enhancing Exporting (video and computer files)

Two thoughts on video…

As part of the curriculum

As an assignment within a curriculum

As a part of the curriculum

When you are not in class

Interesting topics

Distance learning

About using video on the web…

Be aware of your audience!

Bandwidth/connection speed?

Processor speed?

RAM?

OS/browser/plug-ins?

As an assignment within the curriculum

Another form of expression

Engages students’ attention in content

Useful technical skill

An example…

http://www.apple.com/education/dv/gallery/mov2.html

Finished video formats

Video tapes Video files

CD or DVD In multimedia production

PowerPoint Hyperstudio

On a webpage

Equipment needed

Video camera

Digital 8 Mini DV

Equipment needed

Video tapes Tripod

Equipment needed

FireWire cable iMac with iMovie

How do you stream?

Take the best possible video and audio!

Use a tripod Less pans and zooms

the better

Use an external microphone

Lighting is good

How do you stream?

How do you stream?

Bandwidth

codec

InfoInfoInfoInfoInfoInfo

How do you stream?

Bandwidth

Codec

Compression-Decompression

Makes video/audio files smaller so easier to transmit over the Internet

Macs and PCs do not have the same default codecs

Example – video footage

H.263 compression, 12 fps, Keyframe rate = 99No audio compression

240 x 180 pixelsQT file = 108 KB, AVI file = 697 KB

5:17 seconds = 167 frames (or 167 individual pictures)

Possible compression

Multiple pictures that represent changes

Codecs apply to…

Bandwidth

Images

Sound

Images

ImagesSoundSound

imageimagess

sounsoundd

Streaming codecs

As recommended by QuickTime for the Web

Audio Codecs

Qualcomm PureVoice

QDesign Music

Video Codecs

Photo JPEG

Motion JPEG

Sorenson Video

H.263

iMovie’s preset codec options

Email Movie, small

Web Movie, small

Streaming Web Movie, small

CD-ROM Movie, medium

Full Quality, large

Expert – you set both video and audio

Is this a good video clip?

What was wrong?

Background movements

Bad zooms

Horrible picture and sound quality

Distracting transitions

Small titles

How to improve it?

Subtle background

Portrait mode on video camera

Use a tripod

Stills are great!

Zoom in from beginning or pan very slowly

Slow down pan in iMovie

How to improve it?

Get quality video and audio from the start

Better to degrade than try to improve

Good lighting

Use transitions sparingly

Remember change is bad!

Large titles

Improvement

Let’s get started!

Using iMovie 2

iMovie’s Components

1

2

3

Viewer

Bookshelf

Timeline

iMovie’s Components Eyeball view

Clock view

Answers

Pans and Zooms

Large Titles

iMovie 2