Virtual telecine: Difference between revisions
Content deleted Content added
Extended confirmed users, Pending changes reviewers, Rollbackers 37,148 edits m →Further reading: Citation data. |
301,620 edits needs refs Tag: Reverted |
||
| Line 52: | Line 52: | ||
==Further reading== |
==Further reading== |
||
* {{cite magazine |date=April 2003 |title=A Flexible Finish |url=http://www.theasc.com/magazine/april03/sub/index.html |magazine=American Cinematographer |first=Debra |last=Kaufman |access-date=2024-05-06 }} |
* {{cite magazine |date=April 2003 |title=A Flexible Finish |url=http://www.theasc.com/magazine/april03/sub/index.html |magazine=American Cinematographer |first=Debra |last=Kaufman |access-date=2024-05-06 }} |
||
==References== |
|||
{{Reflist}} |
|||
[[Category:Film production]] |
[[Category:Film production]] |
||
Revision as of 17:18, 23 June 2024
 |
A virtual telecine is a piece of
DPX. The output of data files are often used in digital intermediate post-production using a film recorder for film-out. The control room for the virtual telecine is called the color suite
.
- The 2000 movie O Brother, Where Art Thou? was scanned with Spirit DataCine, color corrected with a VDC-2000 and a Pandora Int. Pogle Color Corrector with MegaDEF. A Kodak Lightning II film recorder was used to output the data back on to film.
- Virtual telecines are also used in film restoration.
- Another advantage of a virtual telecine is once the film is on the storage array the frames may be played over and over again without damage or dirt to the film. This would be the case for outputting to different letterboxed, or other aspect ratio. Restoration, special effect, color grading, and other changes can be applied to the data file frames before playout.
Virtual telecine is like a "
tape to tape" color correction process, but with the difference of: higher resolution (2k or 4k) and the use of film restoration tools with standards-aspect ratio
tools.
2k virtual DataCine products
- First virtual telecine by Thomson SABrand:
- VDC-2000 Virtual DataCine
- Specter FS Virtual DataCine
These are able to play out 2k data files in non-linear real time. Size, rotation and color correction-
TIF), the same as the Datacine. First generation input/output interface for data files as the optical fiber HIPPI cables (up to 6 frame/s at 2k), the next generation interface is GSN-Gigabit Ethernet fibre Optic (up to 30 frame/s at 2k). GSN is also called HIPPI-6400 and was later renamed GSN (for Gigabyte System Network). The SAN hard disk are interfaces to the Virtual DataCine by dual FC-Fibre Channel
, cables.
Real time 2k Color Correction is done by a 3D LUT
-Look up tables are also used to control the look and standard of the clips.
- On a Spirit Datacine Phantom TransferEngine software running on an SGI computer or Bones Linux-based software is used to record the DPX files from the Spirit DataCine. These files are stored in the virtual telecine or on a hard diskstorage array.
The end product was accomplished by playing the DPX files back through the Spirit Datacine's process electronics and a Pandora International's MegaDef Colour Correction system.
VDC-2000 Specter and Specter FS are made in
Robert Bosch GmbH, Fernseh
Division.
Real-time virtual telecines
- 4:4:4 RGB can be used as a Virtual Telecine. In this case, standard HDTV video products can be used in a post-productionwork flow.
- As faster computers and SAN-Storage area network came on the market, more Real time 2k Virtual Telecine came on to the market. SDTV is easier to output in real time than HDTV or 2k or 4k display resolutionfiles.
- Limitation to speed are: color correction, resizing aspect ratio, dirt removal, restoration. Also bandwidth speed of the hardware limits real time playout: CPU, interface, SAN, memory, software and hardware.
Some Current virtual telecines are:
- Da Vinci Systems Splice
- Bones by DFT Digital Film Technology in Weiterstadt, Germany.
- Filmlight Baselight
- Marquise Technologies MIST prime and MIST i/o
- SpectSoft RaveHD and Rave2K
- DFT Flexxity
Non-real-time virtual telecines
A number of products are on the market that can output frames in less than real time. These can be used to output DPX data file, but are too slow for HDTV. For some digital intermediate work 4k data is needed. These large 4k display resolution files cannot be transferred in real time.
See also
- Digital cinematography
- Direct to Disk Recording
- Fernseh
- Hard disk recorder
- Lustre (file system)
- Telecine
Further reading
- Kaufman, Debra (April 2003). "A Flexible Finish". American Cinematographer. Retrieved 2024-05-06.