Understanding the Size and Duration of Facebook Ads Video: Technical Specs That Actually Matter

Behind every high-performing Facebook video ad is a set of technical choices that most people ignore. But if you truly care about understanding the size and duration of Facebook ads video, you need to know the specs that shape delivery, placement, and viewer experience. This article breaks down what Meta wants—and how you can give it to them for better ad performance. Keep reading—I’ll make it simple. Meta’s 2025 Video File Requirements (And Why They Matter) Uploading a random .MOV file won’t cut it anymore. Meta’s ad delivery system is engineered to favor content that meets specific file and format standards. Required File Format Acceptable types : MP4 or MOV Video codec : H.264 only Audio codec : AAC (or silent) Avoid other formats like AVI or WMV—they’ll either fail to upload or get compressed poorly, making your ad look bad. File Size Max size : 4 GB Optimal size : Under 1.75 GB for faster loading Bitrate : Use at least 2,500 kbps for 1080p quality ...