6. Betacam IMX format
It's the latest and perhaps simply the last of the VCRs, given the recent introduction of disks or memory cards as high-performance storage media behind the cameras.
Betacam IMX is covered by the SMPTE 365M standard and is known as D-10.
6.1 Recorded signals
As far as video is concerned, these signals comply with the MPEG-2 4:2:2P@ML standard, but in I-frames only – or GOP 1 – to facilitate editing operations. Remember that this signal is characterized by 4:2:2 sampling and by a recording of 608 video signal lines (625 lines) instead of the usual 575, which means that information can be retained in the blanking interval, including the vertical interval time code (VITC).
The IMX VTR also features 4 digital audio...
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Betacam IMX format
Video recorders for high-definition signals
Bibliography
In Engineering Techniques
Standards
- Information Technology – Digital compression and coding of photographic still images: JPEG profile registration, SPIFF profiles, SPIFF tags, SPIFF color spaces, APPn tags, SPIFF compression types and registration authorities (REGAUT) - ISO/CEI 10918-4 - 08-99
- Information Technology – Coding of moving images and associated sound for digital storage media up to approx. 1.5 Mbit/s - ISO/CEI 11172 - 1993
- Information...
Organizations
Joint Photographic Experts Group (JPEG) http://www.jpeg.org
Moving Picture Experts Group (MPEG) http://www.chiariglione.org/mpeg
Manufacturers
(non-exhaustive list)
Panasonic http://www.panasonic-broadcast.com
Sony http://www.sony.net
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