Why You Need This
Each social media platform has its own video duration limits and aspect ratio preferences. Instagram Reels max out at 90 seconds, TikTok allows up to 10 minutes, and YouTube Shorts are capped at 60 seconds. Posting a video that exceeds these limits means the platform will either reject it or auto-crop it in ways you cannot control.
Getting the timing right requires precision. You want your content to start strong and end cleanly within the platform limit. A sloppy trim with leftover intro footage or an abrupt ending can make your content look unprofessional.
FastCut Pro gives you frame-accurate trimming in the browser. You load your video, set exact start and end points using the timecode input or timeline handles, and export a perfectly timed clip ready for upload. There are no watermarks, no account required, and no file upload to slow you down.
Step-by-Step Guide
- Step 1: Open fastcut.cc and import the video you want to trim for social media.
- Step 2: Check the current duration in the timeline. Identify the best segment that fits within your target platform limit.
- Step 3: Drag the start handle to skip any unwanted intro. Drag the end handle to cut precisely at the duration limit.
- Step 4: Use the timecode display to verify the selected segment length. For example, ensure your clip is under 60 seconds for YouTube Shorts.
- Step 5: Choose MP4 as the export format for maximum social media compatibility. Use H.264 video and AAC audio.
- Step 6: Export and upload the trimmed clip directly to your social media platform.
Why Use FastCut Pro
- No Upload Required — Trim your video instantly without waiting for a cloud upload and download cycle.
- Lossless Quality — Keep the original recording quality so your content looks sharp on every platform.
- 100% Free — No watermarks means your content looks professional from the start. No paid upgrades needed.
- Privacy First — Your unedited footage stays private on your device until you choose to publish it.
Pro Tips
- For vertical platforms like TikTok and Reels, record in portrait mode to avoid cropping. If you have landscape footage, use FastCut Pro to trim the best segment before uploading.
- Keep the most engaging moment in the first three seconds. Social media algorithms favor videos with high early retention.
- Export multiple versions of the same video trimmed to different durations so you can post optimized clips across all platforms.