Best Video Resolution for Reposting TikTok to Instagram Reels

If you're cross-posting your TikToks to Instagram Reels — or saving someone else's TikTok to repost on your Reels page — quality matters. Reels compresses heavily, so starting with the best source file is the difference between sharp and mushy.

The numbers that matter

• Resolution: 1080 x 1920 (full HD vertical)
• Aspect ratio: 9:16
• Frame rate: 30 fps (60 fps if the source has it)
• Bitrate: 5–8 Mbps for video, 128+ kbps for audio
• Codec: H.264 (Reels also accepts H.265 but H.264 is safest)
• File size: keep under 100 MB to avoid Reels' upload re-compression hitting harder

Why a clean MP4 source matters

Reels re-encodes every upload. If you start with a watermarked, screen-recorded copy of a TikTok, you're feeding Reels a file that's already been through one round of compression. The re-encoded result looks awful — soft edges, blocky shadows, washed colors.

If you start with the original unbranded MP4 that Snaptok extracts, Reels' compression has clean source data to work with. Result: a noticeably sharper final video.

Workflow

1. Save the TikTok via SnapTok — pick HD (no watermark).
2. Open the file in CapCut (free) or InShot.
3. Trim if needed. Don't add filters that crush contrast.
4. Export at 1080p, 30fps, "high quality" preset.
5. Upload to Reels via the Instagram app (not the website — the web uploader is more aggressive).

What about TikTok to YouTube Shorts?

Same numbers, same workflow. Shorts is slightly more forgiving on bitrate but otherwise identical.

Get the clean source MP4 →