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Best Video Format for Social Media in 2026

Published on March 7, 2026

Use MP4 with the H.264 codec. Every major social media platform accepts it, and it gives you the best balance of quality, file size, and compatibility. If a platform only lists one supported format, it is always MP4.

Platform Requirements at a Glance

  • YouTube: MP4, MOV, AVI, WMV, MKV, WebM. MP4 with H.264 is recommended.
  • Instagram (Reels/Stories): MP4 and MOV. 9:16 aspect ratio, under 4GB.
  • TikTok: MP4 and MOV. Max 10 minutes, 72MB on mobile or 10GB on desktop.
  • Facebook: MP4 is recommended. Supports MOV, AVI, and others but may re-encode them.
  • LinkedIn: MP4 only. 5KB to 5GB, 3 seconds to 10 minutes.
  • X (Twitter): MP4 and MOV. Max 512MB, 2:20 duration.

Why MP4 Wins

MP4 uses H.264 for video and AAC for audio, which is the exact combination platforms optimize for. When you upload a MOV or AVI file, the platform re-encodes it to MP4 anyway, adding a generation of quality loss. Uploading as MP4 in the first place skips that step and gives you more control over the final result.

Resolution and Aspect Ratio

Short-form content (Reels, Shorts, TikTok) uses 1080x1920 pixels in 9:16 portrait. Feed posts work best at 1080x1080 (1:1 square) or 1080x1350 (4:5). YouTube long-form is standard 1920x1080 (16:9). Export at the native resolution of each platform to avoid blurry re-scaling.

Recommended Settings

Export at H.264 High Profile, 8-12 Mbps for 1080p, AAC audio at 128-256 kbps, and a frame rate matching your source (usually 30 fps). These settings keep file size manageable while passing quality checks on every platform. If your file is too large after export, run it through a video compressor to bring it under the upload limit.

Converting Other Formats

If you have videos in MOV, AVI, MKV, or WebM format, convert them to MP4 before uploading with our video to MP4 converter. It runs in your browser, so nothing gets uploaded to a server.

For more on video formats, see H.264 vs H.265 (the codecs that matter most), MP4 vs MOV, MP4 vs WebM, and how to compress video for email.