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Tracks of 1/2” Helical Scan Video Audio (2) Video Control
Helical Scan Video Supply Reel Take-up Reel Tilted Video Drum Audio & control track erase head Audio & control track record head Full erase head
Helical Scan Video Tilted Video Drum Video Head Side view Top view Video Tape
official name: Video8
mainly used with video cameras
small tape size
Digital Video (DV) - 1996
MiniDV - standard for consumer and semiprofessional video production
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
DVCPRO ( Panasonic)
high-definition version called HDV, with MPEG-2 for compression
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.
Video Format Advantages see miniDV. Sony Digital8 cameras will also play back and digitize analog 8mm video tapes High quality, digital interface gives direct control over camcorder none With an adapter, tapes can be used in any VCR (see VHS) Tapes can be used with any VCR, so you don't need to tie up your camcorder when capturing Advantages in an editing environment Also high quality, with added advantage that the tapes are inexpensive (ordinary 8mm). Most common digital format - high quality Inexpensive Inexpensive Large enough to feel like pro gear Advantages in the field Digital8 miniDV 8mm VHS-C VHS Format:
Video Format Disadvantages Format is unique to Sony Digital8 camcorders - no other brand of camcorder uses this format or will play Digital8 tapes. Somewhat more expensive. Tapes are also expensive. Although miniDV VCRs are available, they're very expensive, and so you must tie up your camcorder for capture. Quality not great, and unlike VHS/VHS-C, you must tie up your camcorder for capture. Lowest quality. Quality not great Dis-advantages Digital8 miniDV 8mm VHS-C VHS Format:
Camera, recorder, playback all in one
Portable - compact, light, easy to handle
Good to excellent quality
Can use in low light levels
Attach to VCR for copying
Attach to TV for playback
Advantages of a camcorder
Disadvantages of a camcorder
Optical & mechanical effects
Windows Media 9 (WMV9)
Desktop video production
Portable (VCR, Videodisc, DVD)
Broadcast (Commercial, Public)
Television Distribution Systems
One-way video, two-way audio
Two-way video (PictureTel)
Two-way Video Teleconferencing
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