IAB Updates Video Definitions, Seeks Input

The Interactive Advertising Bureau (IAB) and its technology arm the IAB Tech Lab officially announced on Thursday a new standard open for public comment with the goal of  defining descriptions for digital video products and their associated advertising formats.

"The Redefining Media Types (RMT) Standard," now open for public comment through August 8, 2026, will provide technical standards to support broad adoption.

During the public comment period, IAB will gather feedback from brands, agencies, publishers, ad-technology partners, networks, and other industry stakeholders.

Definitions for digital video product types and their associated advertising formats will help define the standard.

Those formats include connected TV (CTV), online video, social video, FAST, video podcasting, and retail video.

The definitions consider channels, screens, context, and ad formats, with the goal of serving as a guide for media agencies, publishers, networks, technology partners, and brands.

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“As the video marketplace has expanded across platforms, formats, and viewing experiences, the industry needs a more consistent way to define and classify digital video environments,” stated Jamie Finstein, vice president of the Media Center for the IAB. “The Redefining Media Types Standard is intended to give buyers, sellers, publishers, and platforms a shared, future-proof language that improves planning, execution, and measurement across the entire ecosystem.”

The standard addresses legacy media classifications designed around distribution technology and business models, rather than consumer experience. According to IAB, inconsistent definitions can result in misaligned planning, uneven cross-platform measurement, and media investments that do not match the intended viewing environment.

For publishers and platforms, inconsistent terminology can complicate inventory packaging, monetization, and buyer expectations. For ad tech and measurement providers, the lack of standard classification can hinder interoperability and consistent reporting across systems.

Technical systems still support digital advertising and rely on inconsistent or outdated classifications for video. As video becomes a dominant media across advertising, the framework will help to connect new definitions to technical standards and infrastructure needed to support adoption across the industry, according to Anthony Katsur, CEO, IAB Tech Lab.

Interestingly, the RMT Standard was designed in a “two-layer classification system” to support strategic planning and operational execution.

While the first layer, “Strategic Planning,” organizes video advertising into four macro buckets grounded in consumer viewing experience. The second layer, “Operational Execution,” applies binary impression-level attributes that allow individual impressions to be classified across platforms and devices.

This operational layer gives planners, buyers, measurement vendors, and ad-tech platforms a shared set of signals that can be used at the point of each transaction.

Combined, the layers support planning and technical execution. "The macro buckets give the industry a shared language for strategy and cross-platform planning, while the operational attribute layer provides a framework for impression-level classification that can be encoded into OpenRTB bid requests and Project Eidos taxonomy fields," according to the IAB.

Section 5 | Media Type Definitions | RMT Standard - Attribute & Definiton Context

Sec.

Media type

Attribute

Definition / classification

5.2

Linear television

Lean Back Viewing

Linear TV is a passive, lean-back experience with content consumed in real time on a fixed schedule, aligned to broadcast timing across cable, satellite, and vMVPD environments; VOD extends this experience through time-shifted viewing.

Sound

On — default

Sound is on by default, creating a passive audio environment where ads are heard without user action. This ambient, shared audio signal extends reach across the full household, even during multitasking.

Skippability

Completion-required

Ad pods are non-skippable in live playback, with ads delivered in a fixed sequence during scheduled breaks. While DVR enables ad skipping in time-shifted viewing, live linear delivery remains completion-required.

Screen

Full-screen — primary household display

Linear ads are delivered on a full-screen TV in a shared household environment, where a single impression may reach multiple viewers simultaneously. Co-viewing is a defining characteristic.

Addressability

Household deterministic (vMVPD, advanced TV platforms); non-addressable on traditional linear broadcast

Linear TV offers limited addressability, primarily at the household level in MVPD and vMVPD environments. Traditional broadcast remains non-addressable at the impression level, relying on schedule-based delivery.

Signals

Panel-based; set-top box data; ACR; vMVPD first party data

Signals are derived from a combination of panel-based measurement and large-scale data sources such as set-top box (STB) and ACR data, along with vMVPD first-party data. These inputs are aggregated and modeled to estimate viewership at the household and demographic level, without deterministic individual identity.

Device

TV set

Linear TV is delivered through a television set connected to a broadcast, cable, satellite, or vMVPD feed, enabling scheduled, real-time viewing in a shared household environment with high co-viewing potential.

Ad formats

In-stream pod (30s, 15s standard); sponsorship; branded content integrations

Linear advertising is delivered in structured ad pods within program breaks, typically using 15- and 30-second units. Pod-based delivery remains consistent across broadcast, cable, and vMVPD environments, with growing adoption of dynamic ad insertion in advanced TV contexts.

Measurement

GRP / TRP, reach + frequency, brand lift, attribution via panel + ACR fusion

Measurement is anchored in GRP/TRP currency, with reach and frequency derived from panel-based systems and increasingly enhanced by STB and ACR data. Attribution and outcomes are modeled through panel and big data fusion approaches.

Examples

vMVPD platforms deliver a linear experience via IP but should be classified as linear when inventory is delivered to the TV screen in a live, scheduled context.

NBC, CBS, ABC, Fox, ESPN, CNN, Bravo, local broadcast; YouTube TV, Hulu Live

5.1

Streaming

Lean Back Viewing

Video delivered over the internet to connected devices, enabling on-demand and live viewing

Sound

Variable depending on device (on by default via CTV, user inittiated via mobile)

CTV streaming: mostly sound-on by default (similar to linear)

Mobile/desktop streaming: largely user-controlled and often sound-off by default

Skippability

Completion required (dominant); skip enabled available on select platforms

Most streaming ad inventory is completion-required, particularly across AVOD and FAST environments. Skippable formats exist on select platforms.

Screen

Full screen - primary display

Streaming ads are delivered primarily in full-screen, immersive environments. On CTV, this mirrors the primary household display with co-viewing potential, while mobile and desktop are more personal viewing experiences.

Addressability

2P (login, behaviorial, contextual), ACR, 3P data, 1P data

Platform login enables household or user level identity resolution. OEM ACR data enables content-based targeting enables content-level targeting without requiring platform login. Identity fidelity varies by platform.

Signals

Household Deterministic (login); behavioral (viewing history); contextual (content genre, MVPD); ACR (OEM partnerships)

Signals combine deterministic first-party identity (login), behavioral viewing data, and contextual content signals, supplemented by ACR and third-party data. These inputs enable targeting within platforms and modeled extension across devices.

Device

Connected TV — primary household screen

Mobile device

Desktop (PC)

Streaming is accessed across connected TV devices, gaming consoles, mobile devices, and desktops, spanning both shared household screens (CTV) and personal screens (mobile/desktop) within a single ecosystem.

Ad formats

In-stream pre-roll, mid-roll with standard brand ads (:06/:15:30) or customized formats (e.g. IAB Tech Lab CTV ad portfolio)

Streaming supports in-stream formats such as pre-roll and mid-roll within long-form content, alongside an expanding set of interactive and advanced formats enabled by digital delivery and platform capabilities.

Measurement

Deterministic at the platform level, probabilistic at the ecosystem level

Streaming measurement is partially deterministic within logged-in platforms, but becomes increasingly probabilistic when extended across devices, platforms, and ACR-based signals

Examples

streaming platforms across subscription, ad-supported, and FAST models

Hulu, Peacock, Paramount+, Max, Netflix, Amazon Prime Video

5.3

Online video (OLV)

Personal Screen Viewing

OLV is delivered on desktop and mobile devices outside the TV screen, including both in-stream and outstream video placements within browsers and apps.

Sound

Variable — sound-on for in-stream; sound-off default for outstream

Variable by placement: in-stream formats typically follow the content’s sound state, while outstream formats autoplay muted by default.

Skippability

In-stream: time-gated skippability, format-controlled

Outstream: immediate, user-controlled skippability

OLV ads are typically skippable and user-controlled, with viewing dependent on viewer choice and platform-specific formats

Screen

In-stream:and outstream: non-full-screen (in-feed, in-banner)

OLV runs within video players embedded across web pages and apps, including full-width, in-feed, in-banner, and in-app placements alongside surrounding content such as editorial, articles, games, commerce interfaces, and video podcast players.

Addressability

audience-based targeting at the user or device level using deterministic and probabilistic signals.

OLV supports user- and device-level targeting using deterministic and probabilistic signals, with real-time activation at the impression level across web, app, gaming, and commerce environments. Retail and commerce environments enable deterministic targeting using first-party purchase, browsing, and loyalty data.

Signals

Publisher first-party (authenticated); probabilistic ID; cookie-based (deprecating)

Signals include deterministic identity (when available), behavioral data, and contextual signals, along with device-level inputs. Commerce environments contribute purchase, browsing, and SKU-level signals, while gaming environments contribute session-based and engagement signals.

Device

Desktop / laptop; smartphone; tablet

OLV is accessed on personal devices including desktops, laptops, smartphones, and tablets, with viewing typically associated with a single user per device. The same inventory may be delivered across multiple device types. 

Ad formats

Pre-roll, mid-roll, post-roll (in-stream); in-feed, in-banner, interstitial (outstream)

OLV includes in-stream formats such as pre-roll and mid-roll, and outstream formats such as in-feed, in-banner, interstitial.

Measurement

Impression-level

ID-based (user/device)

Event-driven

OLV is measured at the impression level using user or device identifiers, with event-based tracking for delivery and media metrics. In commerce environments, measurement can extend to transaction-based outcomes and closed-loop attribution, while gaming environments enable additional engagement-based signals.

Examples

Direct site video, open exchange video, mobile & app video. Includes video delivered within publisher sites, apps, gaming environments, retail media and commerce networks, and video podcast platforms across web and mobile ecosystems.

Vogue.com, YouTube.com, NYTimes, Amazon.com

5.4

Social video

Personal Screen Viewing

Platform-native short-form and mid-form video in algorithmically curated social feeds on personal devices

Sound

Variable - sound-on for full-screen formats (Reels, Stories); sound-off for in-feed units. 

Sound in social feed environments are variable dependent on the format of the placement. This mirrors the treatment OLV receives ("Variable - on for in-stream; off for outstream")

Skippability

Variable - user-controlled via scroll in feed; completion formats available (e.g., pre-roll before long-form content).

Skippability is treated as a function of whether the ad unit itself provides a viewer-initiated control to bypass the ad, not whether the surrounding environment allows the user to navigate away from it.

Screen

Personal

Social video ads are delivered within a primarily vertical screen that is a personal, feed-based environment where exposure occurs in a scrollable, user-controlled context and co-viewing potential is low.

Addressability

Deterministic

User-level

Platform-contained

Social ads are addressable, using deterministic, logged-in user identity and platform data to enable user-level targeting within closed ecosystems

Signals

Platform 1P; lookalike modeling; pixel-based retargeting

Social video signals are identity-based, behavior-driven, continuously modeled within closed platform ecosystems, and enhanced by pixel and CAPI integrations

Device

Smartphone (primary); tablet; desktop (secondary surface); Connected TV (emerging)

Social video is primarily a mobile media type. Desktop usage exists but the dominant consumption context is smartphone.

Ad formats

Feed-native

Short-form 

vertical

Interactive

Personalized

Platform-native formats vary significantly but are typically feed-native, short-form, and highly interactive, with user-controlled, scroll-based exposure and dynamic personalization

Measurement

Deterministic

Event driven

Platform contained

Social ads are measured using deterministic, impression-level data within platform ecosystems, with event-based tracking and closed-loop attribution enhanced by CAPI-enabled signals

Examples

TikTok, Instagram (Reels, Stories, Feed), Facebook Video, Snapchat, Pinterest Video, X (Twitter) video, Vine, YT Shorts

5.5

Video podcasts

Personal / functional viewing

Video-distributed podcast content combining high audience intentionality with multi-platform delivery

Sound

On — default (audio-primary heritage)

Podcasts are audio-first content consumed with deliberate attention. Sound-on is the baseline expectation regardless of whether the listener is watching or listening. Background audio consumption is common and should be accounted for in measurement.

Skippability

Variable — DAI ads are skip-enabled; host-read integrated content is not skip-enabled

Dynamically inserted pre-roll and mid-roll ads are skip-enabled on most platforms. Host-read and integrated sponsorship units are embedded in the content and not separately skippable. The two formats have different measurement methodologies.

Screen

Variable — full-screen on YouTube; background / lock-screen / audio-only on RSS and HLS distribution

Addressability

Individual deterministic on YouTube; probabilistic or non-addressable on RSS/HLS distribution

Logged-in user graphs enable deterministic individual targeting. Open RSS/HLS distribution uses IP address and user-agent signals per IAB Podcast Measurement Guidelines v2.2, which do not support impression-level individual identity.

Signals

YouTube: logged-in user graph. RSS/HLS: IP + user-agent per IAB PMG v2.2. Hosting platform: download and stream counts

The measurement gap between YouTube and open RSS/HLS distribution is the central standards challenge for video podcasts. The RMT Standard bridges IAB PMG v2.2 and IAB/MRC Digital Video Served Impression guidelines with a phased convergence framework.

Device

Connected TV (YouTube video podcast surface); smartphone; desktop; smart speaker (audio mode)

Device diversity is uniquely high in video podcasts. The same listener may consume the same show across multiple device types in a single week. Cross-device reach measurement is an unresolved challenge.

Ad formats

Dynamic ad insertion (DAI) pre/mid/post-roll; host-read integrated; sponsorship; branded segments

DAI is the dominant programmatic format. Host-read integration commands premium CPMs due to host affinity and contextual relevance. Branded segments (mini-documentaries, branded series) are an emerging premium format.

Measurement

IAB Podcast Measurement v2.2 (audio & video); IAB/MRC Digital Video Served Impression guidelines (streaming); platform-reported (e.g. YouTube Analytics, Spotify metrics)

The RMT Standard recommends applying the download standard from the Podcast Measurement Technical Guidelines for both audio and HLS video, with platform-reported data as a signal for specific channels. IAB/MRC Digital Video Served Impression guidelines (Video Podcasts streamed on Netflix, Tubi, etc.)

Examples

Apple Podcasts launched HLS video podcast support in 2026 with four launch hosting partners (Acast, ART19, Triton Digital/Omny Studio, SiriusXM/Simplecast). Measurement standards for this surface are still maturing.

Spotify, YouTube (video podcast surface), Apple Podcasts, Acast, ART19, Triton Digital / Omny Studio, SiriusXM / Simplecast / AdsWizz

5.6

Retail media video

Personal / functional viewing

Video advertising within retailer-owned and retailer-partnered environments, anchored by first-party purchase data

Sound

Variable — on for in-stream (retailer streaming services); off for on-site video units

Sound state depends on placement context. Retailer streaming (Amazon Prime Video, Walmart+) follows Streaming/OLV norms. On-site video units (product pages, search results) default to muted autoplay.

Skippability

Variable — completion-required for in-stream; skip-enabled for outstream and on-site units

In-stream placements on retailer streaming services follow the norms of the delivery surface (Streaming or OLV). On-site video units are typically skip-enabled or exit-on-scroll.

Screen

On-site: non-full-screen (product page, search, feed); retailer streaming: full-screen

On-site retail video competes with product information and commerce UI elements for viewer attention. Retailer streaming video environments (Prime Video) follow Streaming or OLV norms based on the delivery device.

Addressability

Individual deterministic — retailer loyalty ID, purchase history, authenticated account

Retail media offers the strongest purchase-intent-based targeting in digital advertising. First-party retailer data enables audience segmentation based on verified past purchases, category interest, and in-market behavior.

Signals

Retailer first-party purchase + intent data; loyalty program ID; closed-loop purchase attribution; on-site behavioral signals

Ability to connect ad exposure directly to an event within the retailer's own data environment.

Device

Desktop / laptop; smartphone; Streaming (retailer streaming services)

Device mix varies by retailer and placement type. On-site video is predominantly desktop and mobile. Retailer streaming (Prime Video, Walmart+) delivers to Streaming as the primary device.

Ad formats

In-stream pre/mid-roll (retailer streaming); in-feed, sponsored video, product video (on-site); shoppable video

Shoppable video — enabling direct add-to-cart from within the ad unit — is a retail media-specific format with no direct equivalent in other video media types. It is an emerging standard across Amazon, Walmart, and other retail networks.

Measurement

Closed-loop purchase attribution (online + in-store); sales lift, ROAS, new-to-brand buyers, basket analysis, category penetration

Retail media mesurement follows the same guidelines as the digital media in which the ad was rendered (e.g. CTV, OLV, DOOH) and should adhere to the IAB/MRC guidelines that govern: viewable impressions, ad completeion and invalid traffic.  When speciifc Retail Media measurement is concerned the IAB/MRC Retail Media Measurement Guidelines around reporting requirements, outcomes, incrementatlity and attribution.

Examples

Each retail media network operates as a distinct proprietary platform with opportunity for integrations within dsps and ssps. Third-party verification is available (e.g. OMSDK, S2S, clean room integrations)

Amazon DSP (Prime Video, Amazon.com, Twitch), Walmart Connect, Kroger Precision Marketing, Target Roundel, Instacart Ads, CVS Media Exchange, Home Depot Orange Apron

5.7

Gaming video

Personal / functional viewing

Video advertising within interactive gaming environments, game streaming platforms, and esports content

Sound

Variable — on for esports / game streaming; variable for in-game placements

Esports and game streaming content (Twitch, YouTube Gaming) follows OLV norms: sound-on for in-stream pre/mid-roll. In-game video placements are more variable; reward video is typically muted by default to preserve the game audio environment.

Skippability

Reward video: opt-in, skip-enabled; interstitial (mobile): completion-required; in-stream (esports): varies by platform

Reward video is the most distinctive gaming format: the user opts in to watch a full ad in exchange for an in-game reward. This opt-in mechanism produces the highest completion rates of any video format across all media types.

Screen

Console / esports: full-screen; in-game overlay: non-full-screen; mobile interstitial: full-screen

Screen presentation varies significantly by sub-type. Console gaming on a TV screen is functionally a large-format, full-screen environment. Mobile gaming is a small-screen, personal device environment. These are meaningfully different planning contexts.

Addressability

Individual deterministic via gaming account login (console, PC); probabilistic on open web gaming

Console and PC gaming platforms maintain persistent logged-in accounts with strong individual identity resolution. Mobile gaming identity is more fragmented; IDFA deprecation has affected mobile gaming targeting.

Signals

Gaming account ID (deterministic); behavioral (genre, play history, in-game behavior); contextual (game title, ESRB rating)

ESRB rating and game genre are the primary brand suitability signals in gaming. A blanket exclusion of 'gaming' as a category eliminates premium esports and family-friendly casual gaming alongside mature-rated titles. Buyers should apply title- and genre-level controls.

Device

Connected TV (console gaming, esports streaming); desktop (PC gaming, game streaming); smartphone / tablet (mobile gaming)

Gaming spans all device types. Console gaming on a TV is a large-screen, lean-back experience closer to Streaming in viewing environment. Mobile gaming is a personal-device, often short-session experience. Classify by device and placement at the impression level.

Ad formats

Reward video (opt-in, skip-enabled); interstitial / full-screen (mobile); in-stream pre/mid-roll (esports, game streaming); in-game overlay and native

For in-game ads: Use the IAB IIG Guidelines 2.0 to define when an impression is valid, how video ads are counted, and how event-dependent or advergame ads are measured. For AR ads: Use the IAB/MRC AR Guidelines 1.0 to define delivery, viewability, engagement, and attribution for interactive AR formats, while excluding fully immersive VR and non-digital placements

Measurement

Completion rate, opt-in rate (reward video), viewability (in-game), brand lift, reach by game title and genre, attention metrics

Attention measurement is gaining traction in gaming given the active engagement state of the viewer. Opt-in rate for reward video is a gaming-specific metric with no equivalent in other video media types.

Examples

Gaming video is not a homogeneous category. Esports streaming, console in-game, PC in-game, and mobile gaming each represent meaningfully different ad environments requiring separate planning and buying strategies.

Twitch, YouTube Gaming, Xbox / Microsoft in-game, PlayStation Network, Activision Blizzard Media, EA, Unity Ads, IronSource, Roblox Advertising

5.8

Digital out-of-home (DOOH)

Public Ambient Display

Video on digital screens in public and venue-based environments with group or ambient audience exposure

Sound

Off — default; ambient audio in venue contexts (bars, airports, stadiums)

DOOH screens do not assume audio. Creative must communicate without sound, as most environments are silent or unpredictable. Venue-based ambient audio (e.g., bars, airports, stadiums) may be present but is not consistent or controllable.

Skippability

Completion-required — auto-play loop; no user control over ad exposure

DOOH screens run continuous content loops without user control. The viewer cannot skip, pause, or replay. Exposure duration is governed by dwell time in the environment, not by viewer intent.

Screen

Full-screen on the display unit; non-personal, shared viewing surface

A single screen delivers to multiple viewers in a shared, ambient environment without user-initiated viewing.

Addressability

Contextually and probabilistically addressable; no individual identity resolution

DOOH does not support individual-level targeting or identity resolution. Targeting is based on location, venue, time, and modeled audience data derived from foot traffic and mobility signals. Addressability operates at the group and contextual level rather than the individual or household level.

Signals

Screen location; venue type/category; daypart; dwell time; mobility patterns; impression/audience modeling; contextual signals (weather, events)

DOOH signals are location-centric, with targeting driven by venue, time, and context; programmatic executions leverage real-time bid signals and dynamic triggers, while direct buys rely more on pre-defined location, audience modeling, and scheduling

Device

Public digital display — roadside, transit, retail, venue, stadium, airport, cinema

DOOH is delivered on public, fixed-location digital displays designed for shared viewing. These are distinct from personal devices and are defined by their non-personal, environment-based nature within physical spaces.

Ad formats

Loop-based formats (static and video); dynamic creative; daypart and trigger-based execution

DOOH creative runs in short loops as part of a rotating content playlist, typically featuring static and/or motion formats. Creative duration varies by network and placement. Dynamic creative optimization based on time, weather, or real-time triggers can be enabled through programmatic DOOH.

Measurement

Modeled impressions; opportunity to see (OTS); reach modeling; brand lift (survey); mobile-based attribution

DOOH measurement is modeled using traffic, dwell time, and visibility inputs to estimate impressions. Standard metrics include Opportunity to See (OTS), Likelihood to See (LTS), and audience reach. Brand impact is measured through surveys, while attribution is commonly enabled through mobile device graph methodologies that link exposed audiences to subsequent online or in-store actions.

Examples

DOOH runs across diverse public and venue-based environments, including roadside, transit, retail, hospitality, fitness, and entertainment locations

JCDecaux, Clear Channel, GSTV, Outfront Media, Screenvision

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