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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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Helical scan video l.jpg
Helical Scan Video

Helical ???


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Helical Scan Video

Helical ???

Spiral


Tracks of 1 2 helical scan video l.jpg
Tracks of 1/2” Helical Scan Video

Audio (2)VideoControl


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Helical Scan Video

Audio & control track erase head

Full erase head

TiltedVideo Drum

Audio & control track record head

SupplyReel

Take-upReel


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Helical Scan Video

Side view

Video Tape

Video Head

TiltedVideo Drum

Top view


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VHS

VHS-C


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8mm video

  • official name: Video8

  • mainly used with video cameras

  • small tape size


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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


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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.




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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



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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


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Desktop video production

  • QuickTime

  • iMovie (Mac)

  • Windows Media 9 (WMV9)

  • Media 100

  • Video Toaster


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Television Distribution Systems

  • Portable (VCR, Videodisc, DVD)

  • Broadcast (Commercial, Public)

  • Satellite

  • Microwave

  • Closed circuit

  • CATV







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Video Conferencing

  • One-way video, two-way audio

  • Two-way video (PictureTel)



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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


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