7 Solutions to Reduce Video Size (2025)
Gmail, Outlook, and most email providers limit attachments to 25MB. A 1-minute 1080p video can be 100MB+.
✓ Solution:
Compress to 720p or 480p with 1-2 Mbps bitrate. A 10-minute video will fit under 25MB.
Websites, social media, and platforms have varying upload limits. Discord: 8MB (free), Instagram: 100MB, TikTok: 287MB.
✓ Solution:
Compress to target size: 720p for most platforms, convert to WebM for 50% smaller files (web use).
iPhone records in MOV format with minimal compression. A 1-minute 4K video can be 400MB+.
✓ Solution:
Convert MOV to MP4: 50-70% size reduction with no visible quality loss. Plus better Windows/Android compatibility.
Video libraries accumulate quickly. 100 videos at 1GB each = 100GB storage used.
✓ Solution:
Batch compress entire library: Compress 100s of videos at once. Free up 50-70% storage space.
Batch Compress Videos →Large files take 15-30 minutes to upload with typical internet speeds. 1GB file = 20-30 min upload at 10 Mbps.
✓ Solution:
Compress before uploading: Reduce file size by 50-70%. Upload time drops from 30min to 10min. Or use desktop tool (no upload wait).
Ultra-high-resolution videos are massive. 10-minute 4K video = 5-10GB. 8K is even larger.
✓ Solution:
Reduce resolution or use H.265: 4K → 1080p = 75% smaller. Or keep 4K but use H.265 codec (50% smaller than H.264).
Discord has strict limits: 8MB (free users), 100MB (Nitro). Even short videos exceed these limits.
✓ Solution:
Compress to target size: 480p or 360p for 8MB limit, 720p for 100MB limit. Lower bitrate to fit.
Compress for Discord →Compress to 720p - Should fit most platforms. Reduce bitrate if still too large.
Compress to 720p or 480p - Aggressive compression needed for email/Discord.
Compress to 480p or reduce bitrate - Or convert MOV to MP4 if from iPhone.
Reduce resolution significantly - 4K→1080p→720p. Use H.265 codec. Consider trimming video length.
Use modern compression (H.264 or H.265 codec) to reduce file size by 50-90% without visible quality loss. Fastest and most effective solution.
How it works:
If your video is from iPhone/Mac, it's likely MOV format which is uncompressed. Converting to MP4 reduces size by 50-70%.
Convert MOV to MP4 →Lowering resolution dramatically reduces file size. 4K→1080p = 75% smaller. 1080p→720p = 50% smaller.
Example: 10-minute 4K video (3GB) → 1080p (750MB) → 720p (375MB)
Bitrate controls quality vs file size. Reduce from 8 Mbps to 3 Mbps for 1080p = 60% smaller with good quality.
Note: Desktop tools like Diwadi automatically optimize bitrate. Manual adjustment only needed for specific targets.
Remove unnecessary intro/outro, silent sections, or mistakes. Cutting 30% of video = 30% smaller file.
Trim Video →H.265 (HEVC) produces 50% smaller files than H.264 with same quality. Essential for 4K video.
Note: H.265 requires newer devices (2016+). Use H.264 for maximum compatibility.
WebM format is 50% smaller than MP4 for same quality. Great for website embedding but limited device support.
Convert to WebM →Bottom Line: Desktop tools are faster, more private, and support unlimited file sizes. See detailed comparison →
| Platform | Max File Size | Recommended Settings |
|---|---|---|
| Gmail / Outlook | 25MB | 720p or 480p, 1-2 Mbps |
| Discord (Free) | 8MB | 480p or 360p, low bitrate |
| Discord (Nitro) | 100MB | 720p, 2-3 Mbps |
| 100MB | 1080p, 3-5 Mbps | |
| TikTok | 287MB | 720p, 3-5 Mbps |
| Twitter/X | 512MB | 1080p, 5-8 Mbps |
| 10GB | 1080p, 5-8 Mbps | |
| YouTube | 256GB | 1080p or 4K, high quality |
Diwadi compresses videos automatically with AI-powered settings. Free, fast, and private.