Videos are now a major focus on X (formerly Twitter), making it easier than ever to share engaging content. With the introduction of a dedicated video tab on its mobile app, users can seamlessly scroll through short-form videos—just like on TikTok or Instagram.
For businesses, creators, and everyday users, this shift presents a powerful opportunity to reach a wider audience in 2025. But to maximize engagement, you need to upload videos in the right format and optimize them for the platform.
In this guide, we'll walk you through everything you need to know about how to post videos on X - from formatting and captions to best practices for boosting visibility.
How to Post a Video on X?
Uploading videos on X is simple, but using the correct format ensures they display properly and get featured in the video tab.
Steps to post a video:
- Open X and tap the “+” icon to create a new post.
- Select the media icon to upload a video from your device.
- Add a caption, hashtags, or location to your post.
- Tap Post to share your video.
Your video will appear in both the main feed and the dedicated video tab. In the main feed, captions are placed above the video, while in the video tab, they overlay at the bottom.
Best Video Format for X
- Recommended aspect ratio: 9:16 (vertical video for full-screen display)
- Supported formats: MP4 and MOV
- File size limit: 512MB (higher limits for premium users)
- Video length limit: 140 seconds for users without a subscription (longer uploads available for premium users)
Note: Widescreen videos (16:9) are also supported, but they appear smaller in the video tab compared to vertical videos.
Can I Edit Videos on X?
Before uploading your video, it's important to edit it beforehand, as X offers only basic editing features. Currently, the only built-in editing tool is video trimming.
However, X does provide a few video content settings to manage how your video is shared:
- Download permission toggle – Choose whether viewers can download your video.
- Content warnings – Flag videos containing sensitive content such as nudity or violence.
Access the settings by selecting the gear icon on the video editing screen.
Note that these settings do not necessarily enhance engagement. To ensure your videos are polished and engaging, edit them before uploading using an external tool.
This allows you to:
- Add captions (which increase watch time by 80%)
- Adjust brightness, contrast, or color
- Overlay text or graphics
- Add audio to video, etc.
Resizing your video in advance ensures it displays properly on X.
How to Resize Videos for X?
As mentioned earlier, optimize the content for mobile viewing and X's new vertical video tab by resizing it to a 9:16 aspect ratio (vertical format)!
With Video2Edit's - Resize Video tool, resizing your video is quick and easy!
Here's how to do it:
- Upload your video – Drag and drop your file onto the Resize Video tool's dashboard or click the upload button to select a file from your device.
- Choose the correct aspect ratio – Under "Resize by aspect ratio", select 9:16.
- Start the process – Click START to begin resizing.
- Download your resized video – Once processing is complete, save the new video to your device.
By resizing your video beforehand, you ensure it displays properly in X's vertical video feed, maximizing its visibility and engagement!
Read more: How to Resize Video Online
How to Add Captions to X Videos?
X does not provide automatic captions on mobile or desktop, but you can upload an SRT file to include closed captions.
Steps to add captions on X (desktop only):
- Upload your video as a post.
- Click upload caption file (.SRT) below the video.
- Select your SRT file and upload it.
- Viewers can enable captions by tapping the CC button.
Captions will appear in white text with a black background, but there are no customization options for font style or placement. If you need more control, consider using a third-party editing tool before uploading.
How to Download X Videos?
With the introduction of X's new video tab, video posts are on the rise, and many users may want to download videos to save or share. However, video downloads in the X app are only available for premium users.
Downloading X Videos on the App:
- Tap the share icon in the bottom right corner of the video post.
- Select Download (represented by the same share icon).
- If you have a premium subscription, the video will automatically save to your device.
For free users, a pop-up will indicate that downloads are restricted to premium subscribers. Even with a premium upgrade, keep in mind that some users may disable video downloads in their settings, preventing certain videos from being saved natively.
💡 Alternative Solution: Many video editing apps provide a simple way for free users to download X videos.
In Conclusion
As X continues to evolve, video content is becoming a key part of the platform. Whether you're a creator, marketer, or casual user, knowing how to post and optimize videos can help increase engagement and reach a wider audience.
By following the right format, adding captions, and resizing your videos, you can ensure your content stands out in the growing video landscape of X!
