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Video Helical Scan Video Helical ??? Helical Scan Video Helical ??? Spiral Tracks of 1/2” Helical Scan Video Audio (2) Video Control Helical Scan Video Audio & control track erase head Full erase head Tilted Video Drum Audio & control track record head Supply Reel Take-up Reel

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PowerPoint Slideshow about 'Video' - niveditha


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helical scan video3
Helical Scan Video

Helical ???

Spiral

helical scan video5
Helical Scan Video

Audio & control track erase head

Full erase head

TiltedVideo Drum

Audio & control track record head

SupplyReel

Take-upReel

helical scan video6
Helical Scan Video

Side view

Video Tape

Video Head

TiltedVideo Drum

Top view

slide7
VHS

VHS-C

8mm video
8mm video
  • official name: Video8
  • mainly used with video cameras
  • small tape size
minidv
miniDV
  • Digital Video (DV) - 1996
  • MiniDV - standard for consumer and semiprofessional video production
  • Features include:
    • intraframe compression for uncomplicated editing
    • a standard interface for transfer to non-linear editing systems (IEEE 1394/FireWire)
    • good video quality, especially compared to earlier consumer analog formats such as 8mm, Hi-8 and VHS-C.
  • variants on the DV standard
    • DVCAM(Sony)
    • DVCPRO ( Panasonic)
    • high-definition version called HDV, with MPEG-2 for compression
digital8
digital8
  • Sony - late 1990s.
  • uses conventional analog Video Hi8 tapes, but records the video signal in digital form using the DV codec.
  • excellent video and audio quality
  • Sony is the only company that produces D8 camcorders.
slide13

Advantages of a camcorder

  • Camera, recorder, playback all in one
  • Portable - compact, light, easy to handle
  • Immediate playback
  • Good to excellent quality
  • Can use in low light levels
  • Affordable
  • Attach to VCR for copying
  • Attach to TV for playback
slide15

Camera operations

  • Composition
  • Camera angle
  • Optical & mechanical effects
  • Electronic effects
  • Close-up
  • Movement
    • Pan
    • Tilt
    • Truck
    • Dolly
  • Lens characteristics
    • Zoom
    • Telephoto
    • Wide angle
    • F-stops
slide16

Desktop video production

  • QuickTime
  • iMovie (Mac)
  • Windows Media 9 (WMV9)
  • Media 100
  • Video Toaster
slide17

Television Distribution Systems

  • Portable (VCR, Videodisc, DVD)
  • Broadcast (Commercial, Public)
  • Satellite
  • Microwave
  • Closed circuit
  • CATV
slide23

Video Conferencing

  • One-way video, two-way audio
  • Two-way video (PictureTel)
slide25

Streaming Video

  • sequence of "moving images" that are sent in compressed form over the Internet and displayed by the viewer as they arrive.
  • streaming media is streaming video with sound
  • media is sent in a continuous stream and is played as it arrives
  • user needs a player, which is a special program that uncompresses and sends video data to the display and audio data to speakers
  • a player can be either an integral part of a browser or downloaded from the software maker's Web site