Youtube Pre-roll (TrueView)

Assets overview


YouTube video settings


Resizing your video based on YouTube's best practices recommendations before uploading it will help your videos look better on YouTube.

Please reference our help pages on how to upload your videoaccepted file formats, and optimizing your video.

Video ad settings

  • File format: AVI, ASF, Quicktime, Windows Media, MP4, or MPEG
  • Preferred video codec: H.264, MPEG-2, or MPEG-4
  • Preferred audio codec: MP3 or AAC
  • Resolution: 640x360 (16:9) or 480x360 (4:3) recommended
  • Frame rate: 30 FPS
  • Aspect ratio: Native aspect ratio without letter-boxing (examples: 4:3, 16:9)
  • Maximum file size: 1 GB
  • Click-throughs: A third-party click redirect or click command is acceptable.

Reporting metrics and third-party tracking

Tracking within YouTube video content

Including third-party tracking pixels is optional. However, if you include them, they must meet requirements for third-party ad serving. They must also follow these requirements:

  • Impressions: 1x1 tracking pixel accepted
  • All tracking pixels and any fourth-party calls made within the pixels from daisy-chaining must be SSL-compliant.
  • 1x1 image pixels are allowed on the impression, view, and skip events, but not midpoint and complete events.
  • To include more than one vendor's tracking per event, the client or agency is responsible for piggybacking or daisy-chaining the pixels because only one 1x1 image pixel per event is allowed. JavaScript is not allowed.

Companion banner ads (optional)

If a companion ad isn't provided, no other advertiser's ad will appear next to your pre-roll. When comparing video impressions with companion impressions remember that companion banner ads are not served on all YouTube pages where in-stream ads are served

Companion banners won't show for in-stream ads shown to users watching videos on YouTube Leanback, whether on GoogleTV or in their browser.

Call-to-action (CTA) overlays

CTA overlays are provided for TrueView in-stream ads and in-stream ads bought on reserve in Google AdWords.


Assets overview

  • Headline text: 1 line of 25 characters maximum (any more than 25 will be truncated on some devices)
  • Display URL: The URL displayed to the users on the overlay
  • Destination URL: The URL to which the overlay links. Can be a redirect and/or link to an external site.
  • Thumbnail:
    • Thumbnails must be hosted on YouTube.
    • JPG or GIF only
    • 74x74 pixels

How CTA overlays work

The CTA overlay appears as soon as the video starts playing, and then collapses to show just the thumbnail image after 15 seconds. On desktop browsers, viewers can hover to expand the CTA. On mobile browsers, viewers can click the thumbnail image or arrow to expand it.


Learn more about CTA overlays.