Reddit · video

Reddit video ad specs

Reddit video ads are MP4 or MOV up to 1GB, 2 seconds to 15 minutes, at 1:1 (1200x1200), 4:5 (1200x1500) or 16:9 (1920x1080). 5 to 30 seconds is the recommended range.

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Reddit video ad specs

From Reddit's Ads help center.

Video

1200x1500

Feed · Conversation

Ratios
1:1, 4:5, 16:9, 4:3, 3:4
Minimum
1200x1200 square, 1920x1080 landscape
Files
MP4, MOV
Max file
1GB
Length
2 seconds to 15 minutes (5 to 30 seconds recommended)
Headline
300 max, 100 or less recommended

Up to 30 frames per second. In the conversation placement video is click to play.

What real Reddit video ads are shaped like

By format the mix is 59.1% image, 26.6% video, 14.3% carousel. Reddit creative is the whole post, so the shape that matters is the one the feed gives it: 1:1 or 4:5.

Reddit ads library

How to use it

Make it 4:5 for the mobile feed, where it takes the most screen, and keep a square cut as the shape every placement accepts.

The headline sits above the video in the post's own type. It is the first thing read, and the video plays muted under it.

Image and carousel specs are on Reddit ad specs; real promoted posts are in the Reddit ads library.

Make Reddit ads in every size

Ask Sprites for Reddit image ads and it builds one creative, then recomposes it to each size below in the same run. No cropping by hand, no second brief.

How ad generation works
1080x14401080x13501920x10801440x10801080x1080
  • Reddit Cross-device (Landscape 4:3)
  • Reddit Mobile (Square 1:1)
  • Reddit Mobile (Portrait 3:4)
  • Reddit Mobile (Portrait 4:5)
  • Reddit Landscape (16:9)

Keep going

Reddit video ad specs: questions

What size should a Reddit video ad be?

1200x1500 at 4:5 for the mobile feed, or 1200x1200 at 1:1. 16:9 at 1920x1080 also runs on mobile.

How long can a Reddit video ad be?

2 seconds to 15 minutes. Reddit recommends 5 to 30 seconds.

What is the Reddit video file size limit?

1GB, MP4 or MOV, up to 30 frames per second.

Do Reddit video ads autoplay?

In the feed, yes. In the conversation placement, video is click to play.

Every size, from one prompt

Sprites builds image ads in every placement size for Meta, Google, LinkedIn, Reddit and TikTok from one prompt.