Advertising Technical Specification

Welcome to Story9's Advertising Specifications Guide. This document serves as a comprehensive resource for ensuring your media content meets the technical and creative standards required for seamless delivery and optimal performance across all platforms.

At Story9, we pride ourselves on delivering exceptional media experiences, and consistent adherence to these specifications helps us achieve that goal. Whether it's video, static, or motion content, our guidelines ensure that every piece aligns with industry standards while reflecting the high-quality storytelling that defines our work.

Please review the specifications carefully and let us know if you have any questions or need further assistance. Together, we’ll bring your vision to life with precision and impact.

Social (Meta)

Placement Asset Type Formats Dimensions Aspect Ratio Max File Size Length File Type Delivery Deadline
Facebook / Instagram Feed Image JPG, PNG 1080×1080 (recommended) 1:1 30 MB - Static Image 5 business days
Facebook / Instagram Feed Video .MP4, .MOV 1080×1080 or 1080×1350 1:1 or 4:5 250 MB 1–120 seconds (up to 240 min for in-feed) H.264 (recommended) 5 business days
Stories / Reels Image JPG, PNG 1080×1920 9:16 30 MB - Static Image 5 business days
Stories / Reels Video .MP4, .MOV 1080×1920 9:16 250 MB Up to 60 seconds (15 sec segments auto-split) H.264 (recommended) 5 business days
Carousel Image / Video JPG, PNG, .MP4, .MOV 1080×1080 (per card) 1:1 30 MB (image) / 250 MB (video) Video: Up to 240 min
Image: Static
H.264 for video 5 business days

Additional Considerations

  • Use highest resolution available that maintains aspect ratio
  • Text overlays should be minimal (Meta recommends <20% text coverage)
  • Safe zone for stories: Keep key elements centered to avoid cropping
  • Use sRGB color profile for consistent rendering across devices
  • Max frame rate: 30fps (recommended)
Display Creatives

HTML5 display creatives need to meet the following requirements to serve on various exchanges. Please adhere to all other guidelines issued by the IAB.

Content requirements

Below are the most common display ad sizes, but different sites, apps, and regions support other sizes.

Square and rectangle: 300 × 250
Skyscraper: 120 × 600, 160 × 600, 300 × 600
Leaderboard: 468 × 60, 728 × 90, 970 × 90, 970 × 250
Mobile: 300 × 50, 300 × 100, 320 × 50, 320 × 480

Asset requirements

Clickthroughs HTML5 display ads must use click tags to direct users to a landing page from the ad.

The click tag should be easy for the ad server to read. Don't use a code minifier on the click tag.

When someone clicks the ad, the landing page must open in a new tab or new window.

Animation Ads can animate for no longer than 30 seconds.
Autoplay Ads that autoplay audio are prohibited.

Ads can autoplay video, as long as the audio is muted.

Pop ups Ads that spawn popups or surveys are prohibited.
Download size Display & Video 360 limits the total file size of all creative files downloaded by a person's browser when an ad serves to a maximum of 5 MB. Keep in mind that publisher specifications may require a smaller download size.
Cookies A maximum of 25 cookies can be set per ad.
HTTP calls An HTTP call is any external file or resource loaded by your ad (for example, an impression tracker from a third-party). A maximum of 100 HTTP calls are allowed per ad.

Supported file types

HTML5 creatives must be compressed in a ZIP file. You can include the following file types inside an HTML5 ZIP file:

HTML, style, and script files .html, .htm, .css, .js
Images .jpg, .jpeg, .gif, .png, .svg
Font .dfont, .eot, .otf, .tte, .ttf, .woff, .woff2
OOH

Guidelines for Out of Home creatives

Out of home providers often have varying specifications for the differing executions they supply. Below outlines some common specifications, but for specific locations we have linked to the suppliers for more details.

Content requirements

To run on out of home supplier platforms, all creatives must follow the guidelines for the specific provider.

Common display ad sizes

Digital 6 Sheet - Commonly found on station platforms

48 Sheets - Commonly found as posters on the London Underground Tube, opposite the platforms

Specification Details
Format JPEG, MP4
Size w1080 x h1920 pixels
Rotation Portrait
Slot Length 6 seconds
Content Type Static and motion content
Connected TV
Requirements Formats Length Resolution Max File Size Frame Rate Bitrate Audio Sample Rate Delivery Deadline
One version required (lengths may vary) .MP4 :15, :30 1920×1080 10 GB 23.98 or 29.97 FPS 15,000 kbps – 30,000 kbps 48 kHz 5 business days
.MP4 :15, :30 1920×1080 See below 23.98 or 29.97 FPS 4,000 kbps – 6,500 kbps 48 kHz 5 business days
.MP4 :15, :30 1280×720 See below 23.98 or 29.97 FPS 1,200 kbps – 3,500 kbps 48 kHz 5 business days
.MP4 :15, :30 1920×1080 10 GB 23.98, 24, 25, 29.97, 30 fps 10,000 kbps – 40,000 kbps 49 kHz 6 business days
Asset Required Duration Supported Formats Length Resolution Max File Size Aspect Ratio Bitrate (Min & Recommended) Video Frame Rate Min Audio Bitrate Audio Sample Rate Delivery Deadline
Streaming TV Ads UK/DE/AT/FR/IT/ES/MX: 15, 20, 30, 40, 60
US/CA: 15, 30, 45, 60
Video: H.264, MPEG‑2, or MPEG‑4; Audio: PCM or AAC :15, :30 1920×1080 500MB 16:9 Min: 15 mbps
Recommended: 50 mbps
23.976 (recommended), 24, 25, or 29.97 192 kbps 44.1kHz or 48kHz 5 business days

Additional Considerations

  • Only available in US, CA, UK, DE, AT, FR, IT, ES, MX
  • Site serving requires an MP4 video file
  • Streaming TV ads are delivered in non-clickable environments so they should not include call-to-action elements that encourage clicking (e.g., a button shape that says “learn more”). Video viewability should be measured using VPAID tags from one of the approved vendors.
  • Not supported: VPAID, VAST 2.0 and VAST 4.0
  • Geo, browser or any other targeting on the third party end
  • Third party redirecting or 4th party tags
VOD / Youtube
Asset Requirements Formats Length Resolution Max File Size Aspect Ratio Frame Rate Delivery Deadline
Recommended Video (1080p HD)
Required (lengths may vary)
.MPG (MPEG‑2 or MPEG‑4) At least 12 seconds and up to 3 minutes 1080p (Full HD)
1920 × 1080px (horizontal)
1080 × 1920px (vertical)
1080 × 1080px (square)
256 GB 16:9 for horizontal
9:16 for vertical
1:1 for square
30fps 5 business days
Accepted Video (720p HD)
Required (lengths may vary)
.WMV, .AVI, .MOV and .FLV
.MPEG‑1, .MP4, .MPEGPS, 3GPP, WebM, DNxHR, ProRes, CineForm & HEVC (h265)
At least 12 seconds (3 minutes + is accepted but not Recommended) 720p (Standard HD)
1920 × 1080px (horizontal)
1080 × 1920px (vertical)
1080 × 1080px (square)
256 GB 4:3 (SD) for horizontal
2:3 (SD) for vertical
24fps 5 business days

Additional Considerations

YouTube Requirements

  • YouTube advertising works best when the recommended specs are followed.
  • YouTube videos must be uploaded to client's channel prior to going live; if this is not possible, the video(s) can be hosted on Story9's YouTube channel instead – the videos must be either Public or Unlisted when uploaded.
  • The client's YouTube channel will need to be linked to Story9's DV360 seat; please provide the email address and the person managing the account and channel URL so the Story9 team can send a request.
  • Please provide URL(s) to correct YouTube videos when ready to go live.
Native
Asset Requirements Formats Dimensions Max File Size Aspect Ratio Color Model Length Delivery Deadline
Logo Required JPG, PNG 100×100 (Minimum) 1,200 KB 1:1 RGB or CMYK - 5 business days
Image Required JPG, PNG 1200×627 1,200 KB 1.91:1 RGB or CMYK - 5 business days
Square Image Optional JPG, PNG 627×627 1,200 KB 1:1 RGB or CMYK - 5 business days
Body Text / Short Description Required - Up to 90 characters - - - Additional text typically displayed below the title – should be optimized for mobile 5 business days
Long Body Text / Long Description Optional (but recommended) - Up to 140 characters - - - Additional text typically displayed below the title – should be optimized for desktop 5 business days
Landing Page URL Required - Up to 1024 characters - - - The web page to direct people to when they click your ad. If linked to CM, URL is determined by CM tracking ad. 5 business days
Headline / Short Title Required - Up to 25 characters - - - Title or headline for the native ad – should be optimized for mobile 5 business days
Long Headline / Long Title Optional (but recommended) - Up to 50 characters - - - Title or headline for the native ad – should be optimized for desktop 5 business days
Landing Page URL Required - Up to 1024 characters - - - The web page to direct people to when they click your ad. If linked to CM, URL is determined by CM tracking ad. 5 business days
Caption URL Required - Up to 30 characters - - - A shorter, friendlier version of the landing page URL (e.g., example.com/explore) 5 business days
Call To Action Required - Up to 15 characters - - - The text on the ad’s call-to-action button or link (e.g., “Explore now”) 5 business days
  • All character counts include letters, numbers, punctuation marks, and spaces
Video
Asset Requirements Formats Length Resolution Max File Size Aspect Ratio Codec Frame Rate Bitrate Audio Sample Rate Audio Bit Delivery Deadline
Video (lengths may vary) .MP4 :15, :30 1920×1080 200 MB 16:9 H.264 23.98 or 29.97 FPS 2,500 kbps min.
Audio: 192 kbps
48 kHz 16 or 24 bit only 5 business days

Additional Considerations

  • Most popular video durations listed above; not all lengths must be used and different lengths can be included depending on availability
  • No black bars
  • No letterboxing
  • Vertical video specs can be provided upon request

YouTube Requirements

  • YouTube videos must be uploaded to client's channel prior to going live; if this is not possible, the video(s) can be hosted on Story9's YouTube channel instead
  • The client's YouTube channel will need to be linked to Story9's DV360 seat; please provide the email address of the person who manages the account so the Story9 team can send a request
  • Please provide URL(s) to correct YouTube videos when ready to go live