Editing Dirac (video compression format) (section)

==VC-2==

Dirac Pro, an [[I-frame]] only subset of the Dirac specification, was proposed to the SMPTE for standardisation.<ref name="bbc-wp-159" /><ref name="smpte-conf-2008">{{cite conference |publisher=[[IEEE]] |title=Advancements in Compression and Transcoding 2008 and Beyond – Supporting the March to 8K with Dirac and Dirac Pro (SMPTE VC2): The Dirac Family |conference=SMPTE Technical Conference |year=2008 |url=https://ieeexplore.ieee.org/xpl/conhome/7269233/proceeding |access-date=18 December 2023 |archive-date=18 December 2023 |archive-url=https://web.archive.org/web/20231218230037/https://ieeexplore.ieee.org/xpl/conhome/7269233/proceeding |url-status=live }}</ref> Dirac Pro is designed for professional and studio use of high definition video in high bitrate applications.<ref name="bbc-vc-2"/> In 2010, the SMPTE standardised Dirac Pro as VC-2.<ref name="smpte-vc2" /><ref>{{cite web |title=Schroedinger-1.0.9 Released, Other news – SMPTE VC-2 |date=4 March 2010 |work=diracvideo.org |publisher=[[BBC Research & Development]] |url= http://diracvideo.org/2010/03/schroedinger-1-0-9-released/ |access-date=18 October 2010 |archive-date=8 March 2010 |archive-url= https://web.archive.org/web/20100308063136/http://diracvideo.org/2010/03/schroedinger-1-0-9-released/ |url-status=usurped }}</ref>

Although work on the original Dirac codec has largely stopped, the VC-2 codec has continued to be adapted and updated for HD and UHD post-production environments. The SMPTE standards (ST) and recommended practices (RP) are as follows:<ref name="smpte-2042">{{Cite web |title=SMPTE 2042 family of documents (VC-2) |work=SMPTE Document Library |publisher=[[Society of Motion Picture and Television Engineers]] |url=https://pub.smpte.org/doc/2042/ |access-date=18 December 2023 |archive-url=https://web.archive.org/web/20231218075206/https://pub.smpte.org/doc/2042/ |archive-date=18 December 2023 |url-status=live }}</ref><ref name="smpte-2047">{{Cite web |title=SMPTE 2047 family of documents (VC-2) |work=SMPTE Document Library |publisher=[[Society of Motion Picture and Television Engineers]] |url=https://pub.smpte.org/doc/2047/ |access-date=18 December 2023 |archive-url=https://web.archive.org/web/20231218075258/https://pub.smpte.org/doc/2047/ |archive-date=18 December 2023 |url-status=live }}</ref>

* SMPTE ST 2042-1:2022 – VC-2 Video Compression
* SMPTE ST 2042-2:2017 – VC-2 Level Definitions
* SMPTE RP 2042-3:2022 – VC-2 Conformance Specification
* SMPTE ST 2042-4:2018 — Mapping a VC-2 Stream into the MXF Generic Container
* SMPTE RP 2047-1:2023 – VC-2 Mezzanine Level Compression of 1080P High Definition Video Sources
* SMPTE ST 2047-2:2010 — Carriage of VC-2 Compressed Video over HD-SDI
* SMPTE RP 2047-3:2023 — VC-2 Level 65 Compression of High Definition Video Sources for Use with a Standard Definition Infrastructure
* SMPTE ST 2047-4:2011 — Carriage of Level 65 VC-2 Compressed Video Over the SDTV SDI
* SMPTE RP 2047-5:2022 — VC-2 Level 66 Compression of Ultra-High Definition Video Sources for Use with a High Definition Infrastructure
* IETF {{IETF RFC|8450}} — RTP Payload Format for VC-2 High Quality (HQ) Profile