| 摘要 |
An audio/video production system (16) is implemented on a PC-based platform, preferably utilizing various forms of removable magnetic, optical, or magneto-optical storage media (70). Specially modified cameras or other sources provide digitally data-compressed audio and video programm materials in two formats, a first format having a higher data-compression ratio and intended for use in off-line systems to develop edit decision lists, and a second format having a lower data-compression ratio and intended for use in on-line editing and to produce the final representations of the programs. Off-line editing decisions may thus be developed on a PC (102) using removable storage media (104), and final representations of the programs may be produced on-line in accordance with stationary-head or rotary-head digital-tape-based formats, such as DAT, 6-mm or 8-mm tapes. In an alternative embodiment, automatic and unattended editing, or extended program playback of more than 40 hours duration of digital video, is available.
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