Baidu Search Ad Video Format Guide: Specs, Settings, and Best Practices

Video is no longer an optional format on Baidu search ads — it is becoming the default. Baidu's algorithm now gives more display opportunities to video creatives than to traditional Big Image (large static image) formats. In our campaigns, video consistently outperforms static images on click-through rate, making it one of the most effective levers available in the Baidu PPC account today.

This guide covers everything you need to know: the exact video specifications, where to set up video in your account, the three levels of video deployment, and how to use Baidu's free video resources if you do not have your own assets.

🔵 Baidu PPC 🎬 Search Video Ads 🔍 Paid Search
≤500MB
Max Video Size
MP4, FLV, MOV, and more
≥6s
Min Duration
No maximum limit
16:9
Desktop Spec
≥1280×720
9:16
Mobile Spec
Also supports 1:1

🎬 Why Video on Search Ads?

Baidu has supported video creatives in paid search for years, but adoption remained low among advertisers. The landscape changed when short video exploded in China — Douyin (TikTok), Kuaishou, and WeChat Channels trained users to expect video content everywhere, including search results.

Baidu responded by adapting its search ad algorithm to favor video formats. From our experience managing Baidu accounts for overseas brands, we see two clear trends:

  • More impressions for video: Baidu gives priority display to video creatives over static Big Image assets. A video ad is more likely to be shown in a prominent position than an equivalent image ad.
  • Higher CTR: Video creatives consistently outperform static images on click-through rate. Users are simply more likely to engage with a moving image than a static one.
If you are still only using static images on Baidu search ads, you are leaving engagement and impressions on the table. Video is not the future — it is the current standard that most advertisers have not caught up to yet.

⚙️ How to Set Up Video Ads

Video creative settings are found under the creative management section inside your Baidu paid search account. You can deploy video at three levels, each offering different degrees of control:

LevelScopeBest For
Account levelVideo applies to every ad across all campaignsBrand awareness; one consistent video asset
Campaign levelDifferent videos per campaignCampaign-specific messaging (e.g., one video for brand, another for product launch)
Ad group levelDifferent videos per ad groupGranular targeting; match video content to keyword themes
Recommendation: Start at the campaign level. Account-level is too broad (all your ads show the same video), and ad group level requires too many video assets. Campaign-level gives you meaningful control without overwhelming your production pipeline.

📐 Video Specifications

Getting the specs right is critical. Baidu accepts a wide range of formats but has strict requirements for size, duration, and dimensions.

Supported Formats

Formats MP4, FLV, MOV, M3U8, 3GP, AVI, MPG, ASF, WMV, MKV, TS, WEBM, MXF
Max File Size 500MB
Minimum Duration 6 seconds
Desktop 16:9, ≥1280×720
Mobile (vertical) 9:16, ≥720×1280
Mobile (square) 1:1, ≥800×800
⚠️
Note on mobile: Baidu's mobile search traffic now accounts for over 80% of total search queries. If you can only produce one video, prioritize the mobile 9:16 vertical format. It reaches the largest audience segment and performs better in feed-style placements.

🎥 What If You Do Not Have Video Assets?

Lacking video production capability is not a barrier to running video search ads on Baidu. The platform offers two free resources:

ResourceWhat It DoesHow to Access
Baidu Video PoolA library of free stock videos and pre-made templates you can use directly in your adsAccessible from the creative section of your Baidu account
Baidu Video EditorAn online editor that can resize, trim, and reformat your existing videos to meet Baidu's spec requirementsAvailable inside the ad creation workflow
💡
Practical tip: If your existing ad video does not fit Baidu's 16:9 or 9:16 aspect ratio, try the Baidu video editor before outsourcing the work. It handles common adjustments like cropping, adding background fill, and format conversion. In most cases, it can fix spec mismatches in under a minute.

✨ Video Best Practices for Baidu Search

Based on our campaign experience, here are the approaches that deliver the best results:

  • Keep it short and front-loaded: The first 2-3 seconds are critical. Hook the viewer immediately with your key message or a visually compelling frame. Baidu auto-plays video without sound by default, so make sure your message is clear even without audio.
  • Match video content to keyword intent: A user searching for "industrial air compressor" wants to see a product demo, not a brand story. Align your creative with what the searcher expects to find.
  • Add text overlays: Since Baidu search ads often play without sound, include on-screen text that communicates your value proposition. Use bold, high-contrast text that is readable on mobile screens.
  • Test at least 2-3 variations: Run A/B tests with different video creatives to identify which style drives the highest CTR. Compare product demos vs. testimonial-style vs. animated explainer formats.

✅ Key Takeaways

  • Baidu's algorithm now prioritizes video over static Big Image in search ad placements.
  • Video consistently delivers higher CTR than static image creatives in our campaigns.
  • Video can be set at account, campaign, or ad group level — start with campaign-level.
  • Specs: MP4, ≤500MB, ≥6s duration, 16:9 (desktop) or 9:16/1:1 (mobile).
  • Baidu offers a free video pool (stock footage) and video editor (format conversion).
  • Prioritize mobile 9:16 vertical format — it reaches the largest audience.

Ready to Add Video to Your Baidu Campaigns?

We help overseas brands produce and deploy video creatives that meet Baidu's specs and deliver results. From concept to creative to campaign — we can handle it all.

Get Started with Video Ads →