Wikipedia

Danhash

Joined 6 June 2005

Hi! I'm danhash (talk · message · contribs · new pages · count · logs · email). I'm interested in lots of stuff.

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Film project
Page Short description
Accessibility
Preservation/Archival
Technical
DRM
Disc/digital formats
Video games
 Done To do
Film preservation
  • Alternate audio tracks:
    • Hearing Impaired (HI)
    • Visually Impaired-Native (VI-N)
    • Audio description (AD)
    • Second audio program (SAP)
  • Subtitles & Closed Captions: different versions on different releases by region & release type (movie theater, TV, Netflix, streaming, home release)
  • Section (and maybe new article) on preservation of accessibility / assistive technology elements of film (film accessibility preservation)
Accessibility Modes of usability for people with disabilities ✅
  • Sign language for film
Assistive technology Assistive devices for people with disabilities
  • Hearing Impaired (HI) audio
  • Audio description
  • Sign Language Video in theaters
Assistive listening device (ALD)
  • Hearing impaired audio
Hearing loss ✅
  • Hearing Impaired (HI) audio track
  • Sign Language Video in theaters
Sign language Language that uses manual communication and body language to convey meaning ✅
  • Sign Language Video
Brazilian Sign Language (Libras) ✅
  • Sign Language Video
Cinema of Brazil none ✅
  • Sign Language Video in theaters
Sign-language media ✅
  • Sign Language Video in theaters
Digital Cinema Package (DCP) ✅ ✅ ✅
  • Accessibility
    • Hearing impaired audio
    • Audio description
    • Sign Language Video
  • D-BOX
  • Watermarking
  • Subtitles/Closed captioning
  • 4D film effects, ScreenX
  • Films with many versions (such as Gemini Man): how is a specific version determined to be correct for a specific theater
Media Block Component in a digital cinema projection system ✅ ✅
  • Security features
Movie theater Venue for viewing films ✅
  • Hearing Impaired (HI) audio
  • Audio description
  • Sign Language Video
  • D-BOX
  • Closed captioning
  • Subtitles
  • Sources
  • 4DX, ScreenX, & similar technologies, and how it's encoded (fans, side projection, etc.)
  • Early ultra-widescreen formats (3 projector setups & how those films are archived)
3D film
  • Preservation (for example some films were released for home viewing on bundled hard drives)
  • Playback of 3D Blu-ray: PC software & drivers becoming out of date/removing functionality
  • Exclusive distribution/bundle packages, distribution on hard drives
Disney Digital 3-D Brand name by the Walt Disney Company
4D film 3D film with in-theater physical effects
  • Technical encoding
  • Archival
Specific films with special technical details
  • Oklahoma! (1955 film)
  • Gemini Man (film)
  • "Definitive" versions of films which have multiple simultaneous advanced technologies (UHD, HDR, HFR, 3D, 4D)
    • Specific versions hand-created for lower-level technically capable systems (for example 120fps movie released on 60fps on Bluray or 24fps on streaming)
High frame rate (HFR)
  • Home releases
  • Archival
List of films with high frame rates
D-Box Technologies Motion effects company ✅
  • DCP
  • Subscription service for motion codes for movies
  • Format/protocol/decoding for Blu-ray & other media
Audio description (AD)

Visually Impaired-Native (VI-N)

Descriptive Video Service (DVS)

✅ ✅
  • DCP
  • Preservation
Second audio program (SAP) ✅ ✅
Subtitles Textual representation of events and speech in motion imagery ✅ ✅
  • Preservation
Closed captioning (CC) ✅ ✅
  • CC on DVDs
  • Preservation
  • Vertical blanking interval
Rear Window Captioning System (RWC) ✅
Second screen none
Lost film Feature or short film that is no longer known to exist ✅
Digital dark age Degradation and loss of digitally-stored information ✅
Disc rot Tendency of optical discs to become unreadable
Copy protection
List of Compact Disc and DVD copy protection schemes
  • Include Blu-ray
Compact Disc and DVD copy protection
  • Include Blu-ray
Data position measurement (DPM)
DVD Shrink Optical disc authoring software
DVD region code Characteristic of DVDs
  • Consider an updated title, as this article also talks about region codes for Blu-ray, UMD, and video game consoles
Universal Media Disc (UMD)
Burst cutting area (BCA)
China Blue High-definition Disc (CBHD)
Compact Disc subcode Data contained in a compact disc in addition to digital audio or user data
CloneCD Control File File format
Digital Visual Interface (DVI)
  • Copy control
    • HDCP
    • DTCP
    • SCMS
    • CCI - can be conveyed through DVI-D
Digital Display Working Group (DDWG)
Gigabit Video Interface (GVIF) Copy protection
  • HDCP
Digital Transmission Content Protection (DTCP)
  • All interfaces it's compatible with
  • Comparison to HDCP
  • Trigger mechanisms
  • Protocols
    • FireWire
    • DVI
    • HD-SDI
    • MoCA
Multimedia over Coax Alliance (MoCA)
  • Copy control
    • CCI
ATSC standards Standards for digital television in the US
  • Broadcast flag
Copy Control Information (CCI)
  • Copy control
    • HDMI supports CCI through HDCP
    • CCI information is transmitted along with HDCP to tell the display what restrictions to apply
  • Cinavia (Cinavia#DVD-Audio)
Broadcast flag Bits in a digital television program that indicates recording restrictions
  • A type of CCI for broadcast television content
  • Protocols
    • DVI, especially when HDCP is supported
Image Constraint Token (ICT)
Selectable Output Control (SOC)
  • Technical implementation details
  • HDCP
MiniDisc Magneto-optical storage medium, mainly for audio (1992–2013)
  • Further info on SCMS copy protection
  • Archival/preservation
Serial Copy Management System (SCMS)
  • MiniDisc recorders
  • Protocols
    • DVI
    • HD-SDI
Optical disc drive Type of computer disk storage drive
  • Copy protection
    • Firmware: limitations & modifications (LibreDrive, RPC)
    • Region code
    • Bus encryption
    • Other forms of copy protection
  • Riplock
  • Ripping game discs
  • DiscT@2, LabelFlash, LightScribe, LabelTag
PowerDVD Media player software for Microsoft Windows
  • AnyDVD ability to bypass PowerDVD's detection of Cinavia
  • Requirement to have a certain type of disc drive to play certain types of disc rips
  • Restrictions for UHD Blu-ray such as BD-ROM drive certification, bus encryption, iGPU-only support, HDCP version, BD+, etc.
  • Playing UHD Blu-ray rips/ROMs
  • BD-J/interactive content (such as Sin City Blu-ray), Bonus View, etc.
  • BD+ - any compatibility issues?
  • CC for DVD
  • Support for advanced audio/video formats (HDR versions, Dolby Vision, Dolby Audio, virtual surround in headphones, Windows Sonic for Headphones/Dolby Access/DTS:X on Windows)
  • Compatibility with other formats: HDCD, SACD, DVD-A (including stereo vs. surround sound, quality), HFPA, various CD formats (such as those designed not to work on PC) & handling of CD subcodes (copyright flag, pre-emphasis)
  • HD-DVD, Advanced Content, Xbox 360 HD DVD Player
  • HFR, 3D, HDR, D-BOX
  • 8K Blu-ray
Analog hole Inevitable vulnerability in copy protection
Videocassette recorder (VCR)
VCR/DVD combo Converged electronic device
VCR/Blu-ray combo
LaserDisc Optical analog video disc format
LaserDisc player
Laserdisc game
Interactive film Video game genre
Interactive cinema Style of cinema
Interactive video
Video CD (VCD) / Super Video CD (SVCD) / China Video Disc (CVD)
  • Menu support via software
  • Accessibility features
  • Copy protection
DVD Optical disc format
  • Copy protection
DVD-Video Format used to store digital video on DVD discs
  • Copy protection
  • D-BOX
  • Interactivity, virtual machine, and games
DVD formats
DVD player Device that plays DVD discs
  • Copy protection
Progressive scan DVD player
  • Fix stub
  • Integrate with DVD player, or expand and add a section to that article that links to this one
DVD recorder Optical disk technology
  • Copy protection
  • Which analog signals are honored (or are passed along to the DVD)
Display Data Channel (DDC)
  • Communication channel for HDCP authentication and key exchange
  • HDCP handshake
Extended Display Identification Data (EDID)
  • Find out if devices can send identifying text/model information via EDID and if so how
  • EDID states HDCP support
Software Guard Extensions (SGX)
  • Effect on UHD Blu-ray
Ultra HD Blu-ray (UHD)
  • Requirements for PC playback: update to include all the restrictions, such as BD-ROM drive restrictions, bus encryption, iGPU-only support
  • BD+ - used for additional watermarking/privacy implications?
  • HFR, 3D, HDR, D-BOX
Advanced Access Content System (AACS)
  • v2 & v2.1
Security of Advanced Access Content System
Analog Protection System (APS)
  • Trigger & detection mechanisms (VHS, DVD, Blu-ray, set-top boxes, etc.)
  • Compare to ACP
  • Compare to CGMS-A
  • Vertical blanking interval
Analog Copy Protection (ACP) / "Macrovision"
  • Trigger & detection mechanisms (VHS, DVD, Blu-ray, set-top boxes, etc.)
  • Compare to APS
  • Compare to CGMS-A
  • Protocols
    • VGA - dedicated line to trigger Macrovision in VCRs
    • Composite video
    • S-Video
AACS LA
Encrypted Media Extensions (EME)
Protected Media Path Set of technologies
  • Relation to UHD Blu-ray PC requirements
CloneCD
  • Evolution of ownership
  • Unsupported DRM
ImgBurn
Xbox Series X and Series S Home video game consoles developed by Microsoft
  • Blu-ray/UHD BD interactive content with color-code buttons on remote (example; Sin City Blu-ray)
  • BD+, BD-J, Bonus View
  • Blocking of 3rd-party non-approved controllers
No-disc crack Disc copy protection circumvention
SafeDisc Copy-protection software
Denuvo Anti-tamper software
ARccOS protection
Cinavia Analog watermarking and steganography system
  • Connection to broader subject of digital watermarking
  • AnyDVD ability to bypass PowerDVD's detection of Cinavia
  • DVDFab's method of copying Cinavia-protected discs without removing the watermark
  • DVD-Audio / CCI / SDMI (Cinavia#DVD-Audio)
Video Encoded Invisible Light (VEIL)
  • CGMS-A / Broadcast flag / VBI
Digital watermarking Marker covertly embedded in a signal
  • Cinavia
  • DCP/Media Block
  • Comparison to analog watermarking techniques (ACP, CGMS-A)
  • Comparison to setting "bits" (such as Macrovision bit on DVD) vs. embedding a watermark itself
  • BD+
Audio watermark Electronic identifier embedded in an audio signal
  • Cinavia
Content Scramble System (CSS)
Xbox controller Controller for Microsoft's Xbox console
Xbox 360 controller Primary game controller for the Xbox 360
Xbox Wireless Controller Primary game controller for the Xbox platform
  • Firmware updates
Game accessibility
IMAX Large-screen film format
CGMS-A Copy protection mechanism for analog TV signals
  • Trigger & detection mechanisms
  • Compare to ACP/APS
  • Vertical blanking interval
  • Broadcast flag
  • VEIL
Vertical blanking interval (VBI)
  • CGMS-A
  • Analog Protection System (APS)
  • Closed captioning
Advanced Content
BD-J Java Blu-ray specification
  • JVM games/interactive content on discs (example: Sin City Blu-ray)
  • BD-J homebrew (example: Doom) & emulation/preservation
  • Emulation/preservation in software
BD+ Component of the Blu-ray Disc digital rights management system
  • Used for additional watermarking/privacy implications?
ROM Mark
FireWire/IEEE 1394/iLink
  • Copy control
    • DTCP
    • CCI
    • Broadcast flag
HD-SDI
  • Copy control
    • DTCP
    • SCMS
    • CCI
DisplayPort Digital display interface
  • Copy control
    • HDCP
    • DisplayPort Copy Protection (DPCP)
High-Definition Multimedia Interface (HDMI)
  • Copy control
    • HDCP
    • CCI
High-bandwidth Digital Content Protection (HDCP)
  • How it is triggered in DVD, Blu-ray, etc.
  • Challenges with A/V equipment such as Crestron/Biamp
  • Protocols
    • HDMI
    • DisplayPort
    • DVI
    • GVIF
    • UDI
    • WirelessHD
    • Miracast
    • FPD-Link
  • Selectable Output Control (SOC)
HDCP repeater bit
Ripping Copying digital media to a data storage device
AnyDVD DVD ripping software
  • Evolution of ownership
  • AnyDVD ability to bypass PowerDVD's detection of Cinavia
  • UHD discs, including need to be online to rip certain discs
CloneDVD Proprietary DVD cloning software
  • Evolution of ownership
RedFox / SlySoft
  • Evolution of product ownership
DVDFab
  • Create article
  • Evolution of ownership
  • Method of copying Cinavia-protected discs without removing the watermark
  • Supported DRM
  • Disc compatibility: DVD-A, DVD, BD, UHD BD, HFPA
MakeMKV
  • Create article
LibreDrive
RipGuard
Field-programmable gate array (FPGA)
  • Use in gaming
Hardware emulation Emulating hardware devices in IC design
  • Use in gaming
Clone console
  • FPGA
  • Hardware emulation
Video scaler System which converts video signals from one display resolution to another
  • Use in gaming
  • Integer scaling for retro games
  • Interlacing types (bob, etc.)
Coded anti-piracy (CAP)
  • Comparison to DCP watermarking
Traitor tracing Method of tracing the source of leaked data
  • DCP watermarks
  • CAP
Streaming media Multimedia delivery method
  • Accessibility features
Streaming media player
  • Accessibility features
Copy attack
  • Links to/from relevant articles
  • Add details with sources
  • Add examples (Cinavia, etc.)
BDMV
  • Change from redirect to an article
  • Authoring of BDMV
  • Comparison/relation to BD-J
High Fidelity Pure Audio (HFPA)
  • DRM
  • Archival
Template:Blu-ray
  • Review links & update as needed
New page: Music preservation / High resolution audio archival
  • Legal challenges
    • DRM
      • restrictions on circumvention (even when copies are legal)
      • technical challenges on circumvention (DRM can change even from disc to disc within a format)
      • future access to media which has DRM (such as when licensing bodies no longer exist & official or unofficial hardware/software is no longer maintained or available)
      • out-of-spec formats (for example, even if technical details on decoding CD audio are preserved, some discs may be unreadable due to tricks and intentional out-of-spec disc authoring)
      • newer hardware which lacks ability to read or decode older formats or which may not be able to enforce the correct output encryption (what happens to "official" DVD playback in the future when home formats have moved beyond HDMI/HDCP)
    • Copyright: restrictions on copying and distribution
    • Content owners change over time
  • Logistical challenges
    • storage/organization of physical media
    • storage of digital media and required storage space
    • preserving discs which degrade over time
    • not all formats are easily preserved or played back (e.g. HDCD)
    • Other technical challenges: maintenance of codec libraries, software, preservation of hardware and its documentation/manuals
    • Differing regional releases (foreign/import versions with extra tracks)
    • Remixes, censored versions, radio edits, extended mixes, bonus tracks
    • Album art
    • Metadata (including CD-Text)
  • Audio masters & archives
    • Legal ownership of audio masters
    • Physical format and condition of audio masters
    • Loss or destruction of audio masters
    • Loss of Myspace music deletion
  • Censorship/Alternate edits
    • Music released only in censored form (e.g. some of D12's songs)
    • Versions of music videos without the censored version
    • Radio edits (not just censorship, but songs made shorter such as So Cold by Breaking Benjamin)
    • Single versions (such as Down by blink-182, where on the single version the song doesn't flow directly into the next track)
  • Multiple versions:
    • Different release formats (Vinyl, MiniDisc, CD, etc.)
    • Different digital resolutions/processes (CD side vs. SACD side on a Hybrid SACD; DVD-Audio stereo mix compared to CD mix, example: 14 Shades of Grey)
    • Re-releases (loudness war)
    • Dolby NR on audio cassette tapes: detection and processing
    • Pre-emphasis on CDs: how
    • Promo versions: Angels & Airwaves pre-release/promo album version had changes to songs and to track order
    • Differences between released version and music video version
    • Differences in dynamic range in different releases of the same content (Loudness War)
  • Handling of CD subcodes (copyright flag, pre-emphasis)
    • CDs ripped with incorrect pre-emphasis: detection and repair
    • Detection of HDCD (how is HDCD format signaled? Also add this to HDCD article)
    • Detection of HDCD audio ripped as normal CD audio, so that the user/decoder knows to use HDCD decoding
    • CDs replicated incorrectly (not gapless)
  • Multiple formats (MiniDisc, CD, HDCD, DVD-A, audio on DVD, SACD, HFPA, streaming, HDtracks)
  • Other formats/processes: Super Bit Mapping vs. the same release without it
  • Note if any of these items utilize audio watermarking to trigger decoding modes (as opposed to digital "bits" or codes, such as CD subcodes)
  • Gapless audio and its preservation / Gapless on modern platforms (such as Spotify, Tidal, and YouTube)
  • Hidden tracks / pre-gap audio
  • Fake lossless (ex. Tidal)
  • Other streaming topics:
    • Master Quality Authenticated (MQA): not lossless, and also not well documented. Used in Tidal. And now defunct. If there was benefit to this format, what happens with its demise? (Additionally, and separately, details are needed on on MQA-CDs, potentially added to the MQA article)
    • "CD-quality" usually not being CD quality
    • Dolby "Atmos" and other "3D" or "enhanced" audio technologies for mobile devices or novel purposes, generally advertised for specific combinations of specific hardware, such as "Atmos" on Tidal on Android and its compatibility with "real" Atmos hardware such as Sonos Arc
    • Multiple versions of Atmos
    • Artists who are on Spotify/Tidal but where some of their music is missing, potentially leading consumers to believe they don't have more music or that the music is inaccessible
  • Songs only ever released in low-quality lossy versions (such as iTunes & Spotify exclusives or MP3 files on enhanced CDs, or the Evanescence bonus track for Fallen for users who authenticated their physical CD via a browser plugin on a website)
  • Surround sound
    • Songs mixed & released in surround sound
    • Songs mixed in surround sound for special purposes (e.g. film) but not released in surround sound
    • Songs recorded in mono and later released/remastered in stereo
  • Dynamic video game soundtracks: Video game music that's responsive to the game conditions (such as location of player character in a level) compared to the soundtrack released
  • Video game music stored as MIDI-style data that's "played" at runtime (ex. Super Mario 64): differences between the audio as played by the original device (ex. N64) and later devices (Wii, Nintendo DS); differences in the "official" soundtrack releases. Documentary/video on YouTube detailing this, find sources
  • Music in a film or game that's not released on the official soundtrack, or differences between the "on-screen" and separately released music
  • How to best archive and ensure the future accessibility of all types of formats/processes for modern & future hardware/software
    • Relevance of Roon's transport protocol
  • Lyrics, etc.
    • CD+G
    • Verified Genius annotations
    • Liner notes
  • Associated media
    • Liner notes/booklets/artwork for all different physical releases
    • Digital data & extras for digital versions (high quality album art, PDF booklets)
    • Software, video, or other data on the physical discs (such as blink-182)
  • Bootlegs, "official" bootlegs, "rare" tracks, "unreleased" tracks and demos
  • Copyright extension collections
HDtracks
National Film Registry Selection of films for preservation in the US Library of Congress
  • How are films available to the public
HDR video
  • Compatibility of various formats
  • Preservation and archival
HD DVD Obsolete optical disc format
  • Accessibility (CC, subtitles, etc.)
DVD-Audio DVD format for storing high-fidelity audio
  • PC compatibility (official), including advanced content (menus, linking to DVD-Video content)
  • Hardware compatibility, including modern & future devices; devices which support both DVD-A and DVD-Video DRM
  • Preservation/archival
  • Ripping
  • See also section
  • DRM, watermarking, watermark detection (what devices/software can detect it, is it transparent, can it be removed)
  • Examples of different stereo mixes from CD releases (such as 14 Shades of Grey)
  • Cinavia (Cinavia#DVD-Audio)
Self-Protecting Digital Content (SPDC)
Video Content Protection System (VCPS)
  • Removed large section of unsourced POV content
  • Was this standard even used? What is its place today?
Comparison of DVD ripper software
  • Lots of old and probably inaccurate info
  • Article needs lots of cleaning up and sources
  • Historical information about previous OS compatibility (such as Windows 98) can probably be removed if not of important historical value
  • Software not notable for current use, historical significant, or some other reason should probably be removed. Software applications that are notable should also have their own dedicated pages (such as DVDFab)
Blu-ray ripper
  • Add UHD Blu-ray & its features and limitations:
    • Intel SGX, drive firmware, etc.
    • Add notes on which software can circumvent and/or remove these additional limitations
  • Audit list of software
    • Add AnyDVD
  • CPU GHz/RAM/HDD requirements not necessary
Comparison of video player software None
Content Protection for Recordable Media (CPRM)
Secure Digital Music Initiative (SDMI)
High-Definition Audio-Video Network Alliance (HANA)
DVB Content Protection & Copy Management (DVB-CPCM)

Sources

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Created templates

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Created pages

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Created from redirect

Pages to create

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Created categories

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Current

Articles:

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Improved/Improving

Interest


Discussions:

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Other

Current/Ongoing


Sources / Research

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Fix It List

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Orphaned talk pages

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Potential scripting opportunities

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(Note: Could potentially use AWB to script all of these)

  • Fixing non-bolded abbreviations of bolded words in lead
  • Fixing bolded parentheses in abbreviations of bolded words in lead
  • Fixing curly apostrophes/quotes to straight apostrophes/quotes (but not touching citations)
  • Fixing single quotation marks to double quotation marks (ignoring apostrophes, citations, single quotation marks inside of double quotation marks, and any other legitimate use of single quotation marks)

Assorted usefulness

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MOS:ORDER and MOS:LEADORDER

Interesting

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To-do list

(recent changes) [edit]

Software

Technology

Bookmarks

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Community/Administrative Procedures

Ways to contribute

Tools

Policies/Guidelines/References

Technical

Templates

Essays

Per-user pages

Sandboxes

Other

Subpages

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Main page: Special:PrefixIndex/User:danhash/

Transclusions

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Templates

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Logs

Currently unused

User talk

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