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What to do when your video is too big

Learn how to adjust your file's size and understand the tradeoffs of doing so.

Written by: Madeline B.

Last updated: 26 Aug., 2025

B12 video files are currently limited to a maximum file size of 75MB. If your video is currently too large, consider these steps to reduce its size:

Upload video to YouTube

By uploading your video to YouTube rather than the B12 Editor, you'll be able to embed videos of nearly unlimited size onto your B12 site using YouTube's video player. Because of their video-focused infrastructure, videos hosted by them will load faster as well.

To learn more about how to embed YouTube videos into your B12 site, please click here.

If you plan to use your video as a section background, please keep in mind that this isn't currently possible using YouTube. The items below detail your options when uploading a video background.

Reduce video length

The easiest way to reduce your video's file size is to reduce its total duration. We suggest making this change using a quick and easy online tool like Online Video Cutter, though any video editing software will do.

Lower resolution and framerate

Lowering your video's resolution will decrease its overall image quality. If you're using the video as a background, this might not be extremely noticeable, as customers likely will be focused on your site's foreground elements. Many website visitors visit websites on small screens and low-resolution devices anyway, so they might not even be able to tell the difference between different resolutions.

Generally, we would suggest trying to save the video as a 1080p (1920x1080) video and seeing if the file can be uploaded. If not, reducing your video's resolution to 900p (1600x900) should decrease the file size further. If you still need the file smaller, you can reduce the resolution further to 720p (1280x720).

If you still have issues with file size, reducing your video's framerate could also help. If your framerate isn't set to 30, try setting it to 24 instead.

Change compression type

Changing your compression type is a useful last-ditch if the above options fail. It's the most complicated of the three options and will likely present the smallest reduction in file size, but it can be a useful option if you're right on the edge of the 75MB file size.

One of the easiest ways to compress your videos is to use an online compressor like FreeConvert. If you're familiar with more advanced video editors like Adobe Premiere, these softwares will also allow you to change your compression and encoding options.