Editing HDCAM (section)

==HDCAM SR==
{{pic|HDCAM SR logo.svg|Logo of HDCAM SR}}
[[File:Sony BCT-40SR 20060616.jpg|thumb|HDCAM SR small tape]]

'''HDCAM SR''' was introduced in 2003 and standardised in [[SMPTE 409M]]-2005.<ref name="BPRL">{{Cite web|url=https://pro.sony/en_GB/|title=Sony Professional - Products and Solutions To Redefine Your Business|website=pro.sony}}</ref> It uses a higher particle density tape and is capable of recording in 10 bits 4:2:2 or 4:4:4 [[RGB]] with a video bit rate of 440&nbsp;Mbit/s, and a total data rate of approximately 600&nbsp;Mbit/s.<ref name="hdcamsrfaq">{{Cite web|url=https://pro.sony/en_GB/change-country-region-language?originalUrl=%2F%3Fsite%3Dbiz_en_GB%26contentId%3D1164903089736%26parentFlexibleHub%3D1169220709744&site=biz_en_GB&contentId=1164903089736&parentFlexibleHub=1169220709744|archiveurl=https://web.archive.org/web/20071212001944/http://www.sonybiz.net/biz/view/ShowContent.action?site=biz_en_GB&contentId=1164903089736&parentFlexibleHub=1169220709744|url-status=dead|title=Change Country|archivedate=December 12, 2007|website=pro.sony}}</ref> The increased bit rate (over HDCAM) allows HDCAM SR to capture much more of the full bandwidth of the [[HD-SDI]] signal (1920×1080). Some HDCAM SR VTRs can also use a 2× mode with an even higher video bit rate of 880&nbsp;Mbit/s, allowing for a single 4:4:4 stream at a lower compression or two 4:2:2 video streams simultaneously.<ref name="hdcamsrfaq"/> HDCAM SR uses [[MPEG-4 Part 2]] Simple Studio Profile<ref name="BPRL"/> for compression, and expands the number of audio channels up to 12 at 48&nbsp;kHz/24-bit.

There are 12 channels of audio recorded uncompressed at 24 bit 48&nbsp;kHz sampling. Each channel is capable of recording AES3 non-audio data.

HDCAM SR was used commonly for HDTV television production. In the mid-2000s, many prime-time network television shows used HDCAM SR as a master recording medium,<ref>{{cite web |url=https://www.bbc.co.uk/guidelines/dq/pdf/tv/TechnicalDeliveryStandardsBBCv3.pdf |title=BBC Guidelines to the common technical standards agreed by the BBC, BSkyB, Channel 4, Channel 5, ITV and S4C}} Mentions HDCAM SR to be the only acceptable delivery format.</ref> but it is no longer in widespread use.

Some HDCAM VTRs play back older Betacam variants, for example the Sony SRW-5500 HDCAM SR recorder plays back and records HDCAM and HDCAM SR tapes, and with optional hardware also plays and upconverts Digital Betacam tapes to HD format. Tape lengths are the same as for Digital Betacam, up to 40 minutes for S and 124 minutes for L tapes. In 24p mode the runtime increases to 50 and 155 minutes, respectively.

HDCAM tapes are black with an orange lid, and HDCAM SR tapes black with a cyan lid.

440&nbsp;Mbit/s mode is known as '''SQ''', and 880&nbsp;Mbit/s mode is known as '''HQ'''.

Sony also announced a higher compression mode called SR Lite.<ref>{{cite web |url=http://pro.sony.com/bbsc/ssr/mkt-cinematography/resource.solutions.bbsccms-assets-mkt-cinema-solutions-hdcamsr2.shtml#mxf |title=Sony for Professionals:Open Workflow with MXF and SR Lite}}</ref><ref>HDCAM SR Press Conference "Power Of Images"</ref> As with the 440 and 880 mode, SR Lite utilizes the MPEG-4 Part 2 Simple Studio Profile but decreases the bit rate to 220&nbsp;Mbit/s for 60i and 183&nbsp;Mbit/s for 50i. SR Lite is locked at 4:2:2 color sampling but still maintains 10 bit pixel depth. It also allows for 50 and 60p at the cost of a doubled data rate (440&nbsp;Mbit/s for 60p).

The Sony SRW-5800 HDCAM SR VTR has the ability to record both the left eye and right eye of [[3D film|3D]] content to a single tape. 
It syncs the two eyes together and takes up twice as much space on the tape as a normal recording. Other HDSR decks also support 3D such as the SRW-1 HDCAM SR Portable VTR and the SRW-5500/5000 which can play back either channel A or channel B of the Dual Stream 4:2:2 recording.<ref>{{cite web|url=http://www.sony.co.uk/pro/article/cd-rebuild-1237479395206-1204|title=Broadcast, Professional and Business solutions|website=www.sony.co.uk}}</ref>