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Options for Video Streaming

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Options for Video Streaming Understanding and applying the technology to volleyball How does live streaming work? A camera sends a video signal to a computer (usually ... – PowerPoint PPT presentation

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Title: Options for Video Streaming


1
Options for Video Streaming
  • Understanding and applying the technology to
    volleyball

2
How does live streaming work?
  • A camera sends a video signal to a computer
    (usually a laptop).

3
How does live streaming work?
  • The computer encodes the video signal into a
    smaller, more easily transmitted file.
  • Normal video is 640 x 480 pixels and 30
    frames/sec.

4
How does live streaming work?
  • Streamed video is usually reduced to at least
    half size and half the frame rate (320x240 at
    15fps).
  • This would be a quarter TV screen and look a
    little jumpy but is pretty darn good for
    streaming (webcasting).

5
How does live streaming work?
  • As the computer shrinks the file, it is sent over
    the internet to a streaming server.
  • A streaming server is a powerful computer with
    lots of internet bandwidth.
  • You could only get about a dozen viewers on your
    typical high-speed cable modem.

6
How does live streaming work?
  • The streaming server re-broadcasts the feed to
    users who are viewing on the internet.

7
How does live streaming work?
  • The server can even offer several different sizes
    that require different amounts of bandwidth.
  • 128K small, can be a little shaky/jumpy least
    expensive.
  • 256K A little larger, smoother.
  • 375K Even larger, smoother.
  • 512K Looks pretty good. Large. Most expensive.

8
Live streaming shopping list
  • A video camera
  • Almost any kind will do as long as there is a way
    to send the signal from the camera into the
    laptop.
  • The most typical signal is firewire. Most modern
    video cameras have a firewire port. Sony calls it
    iLink.

9
Live streaming shopping list
  • A computer to capture the video signal and send
    it to the streaming server.
  • Usually a laptop with a firewire port or you can
    get a cheap firewire card.
  • Should be relatively new, powerful enough to
    resize the video signal to a smaller stream
    quickly.

10
Live streaming shopping list
  • Capture/Streaming software
  • Runs on the laptop to compress the video signal
    and transmit it to the streaming server.
  • Available for Mac PC.
  • Usually low cost.
  • Try http//all-streaming-media.com

11
Live streaming shopping list
  • A human with a microphone
  • Streams are better if there is someone who can
    commentate or at least call out the score.
  • They can also move/zoom the camera during time
    outs.

12
Live streaming shopping list
  • High speed internet in the Gym
  • Usually wireless.
  • Needs to be fast enough (756 KB or more).

13
Live streaming shopping list
  • Local streaming server or Commercial Server

14
Live streaming shopping list
  • Local streaming server
  • Campus IT might have one or can build one.
  • Best option if your school has bandwidth since
    you can make it free to viewer and use free
    software.
  • Your IT department needs to have a clue.

15
Live streaming shopping list
  • Commercial server
  • Usually charge per viewer or per megabyte
    downloaded.
  • More simple since they provide all software and
    server configurations.
  • Not as good for recruiting since payment
    required.
  • Some sites offer free streaming like
    www.vidiac.com.
  • They insert commercials to pay for it. Not
    verified.

16
Using YouTube
  • A free, easy to use method that might be good
    enough.

17
Using YouTube
  • Register for free account at youtube.com
  • Allows free 10 minute clips to be uploaded.
  • Can capture video live or later from camera.
  • Leverages YouTubes enormous bandwidth for free.

18
Using YouTube
19
Using YouTube
  • Doesnt stream in real time.
  • Clips must be captured or uploaded in 10 minute
    segments.
  • Clips available about 10 minutes after upload.
  • Requires a person to start new capture every ten
    minutes.

20
Using YouTube
  • Sample video uploadhttp//www.youtube.com/Univer
    sityAthlete
  • Choose UA Seminar

21
Questions?
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