|
High Definition Video (HDV) is a video format which is intended to provide the facility to record high-definition (as opposed to standard definition) MPEG-2 video on standard DV media (DV or MiniDV cassette tape).
The HDV format was defined by four companies: Canon Inc., Sharp Corporation, Sony Corporation, and Victor Company of Japan, Limited (JVC). These companies originally announced their HDV partnership in September, 2003. They have been joined by other companies such as Apple Computer.
In January 2005, Apple announced versions of iMovie and Final Cut Express that can import and edit HDV. Because HDV is a consumer version of high definition it is not supported by their high-end product, Final Cut Pro.
Specifications
| Media | DV or MiniDV Tape
|
| Video Signal | 720/60p, 720/30p, 720/50p, 720/25p, 1080/60i, 1080/50i
|
| Compression | MPEG2 Video (profile & level: MP@H-14)
|
| Sampling Frequency for Luminance | 74.25MHz 55.7MHz
|
| Sampling Format | 4 : 2 : 0
|
| Quantization | 8 bits (both luminance and chrominance)
|
| Bit rate after Compression | Approximately 19Mbps/25Mbps
|
| Audio Compression | MPEG1 Audio Layer II
|
| Audio Sampling Frequency | 48kHz
|
| Audio Quantization | 16 bits
|
| Audio Bit rate after Compression | 384kbps
|
| Audio Mode | Stereo (2 channels)
|
| Stream Type | Transport Stream Packetized Elementary Stream
|
| Stream Interface | IEEE1394 Firewire (MPEG2-TS)
|
External links
|
