Täielik juhend video tihendamisse (2025)
Video compression reduces file size by removing redundant data while preserving visual quality. Modern codecs analyze each frame and eliminate information your eye can't perceive.
Example: A 10-minute 1080p video (uncompressed) = ~15GB. With H.264 compression = 500MB. That's 97% smaller with no visible quality loss.
Lossy Compression (Recommended)
Removes data your eye can't see. Produces 50-95% smaller files with imperceptible quality loss.
Use for: YouTube, Instagram, email, web, general sharing
Codecs: H.264, H.265 (HEVC), VP9, AV1
Lossless Compression (Rarely Needed)
Preserves 100% of original quality but produces larger files (only 10-30% reduction).
Use for: Professional video editing, archival, mastering
Codecs: ProRes, DNxHD, FFV1
Bottom Line: 99% of users should use lossy compression (H.264 or H.265).
Software installed on your computer. Processes videos locally without uploading to the cloud.
Pros:
Cons:
Web-based services. Upload video to their servers, compress in cloud, download result.
Pros:
Cons:
Use online tools when: True one-time compression, tiny file (<100MB), can't install software
Professional editors with export/compression features (Adobe Premiere, DaVinci Resolve, Final Cut Pro).
Pros:
Cons:
Use editing software when: Already editing video professionally, need precise export controls
Recommendation: For most users, desktop tools like Diwadi offer the best balance of speed, privacy, and ease of use.
Resolution is the number of pixels in your video. Lowering resolution dramatically reduces file size.
| Resolution | Name | Pixels | File Size (10 min) | Best For |
|---|---|---|---|---|
| 3840×2160 | 4K / 2160p | 8.3M pixels | 2-3 GB | YouTube, archives, large screens |
| 1920×1080 | Full HD / 1080p | 2.1M pixels | 500-800 MB | Best general-purpose |
| 1280×720 | HD / 720p | 922K pixels | 200-300 MB | Web, email, social media |
| 854×480 | SD / 480p | 410K pixels | 80-120 MB | Email (<25MB target), web |
Quick Tip: Reducing 4K to 1080p cuts file size by 75% with minimal quality loss on most screens.
Bitrate is the amount of data per second. Higher bitrate = better quality but larger files.
Recommended Bitrates:
Pro Tip: Diwadi's AI automatically calculates optimal bitrate based on resolution and content complexity.
The codec determines how video is compressed. Modern codecs offer better compression with same quality.
H.264 (Recommended for Most)
The universal standard. Plays everywhere, excellent compression, good quality.
Use for: General sharing, YouTube, social media, compatibility
H.265 / HEVC (Best for 4K)
50% smaller files than H.264 with same quality. Essential for 4K video.
Use for: 4K/8K video, reducing file sizes, modern devices (2016+)
VP9 / WebM (Best for Web)
50% smaller than H.264. Great for websites but limited device support.
Use for: Website embedding (with MP4 fallback)
Frames per second. Higher fps = smoother motion but larger files.
Tip: Reducing 60fps to 30fps cuts file size by 50% with minimal quality impact for non-action content.
Settings:
Settings:
Notes:
Platforms re-compress anyway. Use good quality but not maximum.
Settings:
Recommendations:
YouTube accepts large files. Prioritize quality over file size.
Settings:
Why WebM:
50% smaller = faster page loading. Provide MP4 for iPhone compatibility.
Convert to WebM →Problem:
iPhone records in MOV format with huge file sizes (400MB+ per minute of 4K).
Problem: Each compression loses quality. Re-compressing 3-4 times causes noticeable degradation.
Solution: Always compress from original source. If you must re-compress, keep intermediate files.
Problem: 1080p at 500 kbps looks pixelated and blocky.
Solution: Match bitrate to resolution (1080p needs 3-8 Mbps minimum).
Problem: Most phones can't display 4K. You're wasting bandwidth and storage.
Solution: Reduce 4K to 1080p for mobile sharing (75% smaller, no visible difference).
Problem: Old codecs produce 3-5x larger files than modern H.264/H.265.
Solution: Always use H.264 or H.265. Convert old formats to MP4.
Problem: You might compress too aggressively and lose important quality.
Solution: Always preview compressed video before deleting source. Keep originals of important videos.
Mac, Windows, or Linux. 30-second install, no account required.
Download Now →No complicated settings. Just drag your video into Diwadi.
Diwadi's AI automatically optimizes resolution, bitrate, and codec for best quality/size balance.
Your compressed video is ready. 50-70% smaller, same quality.
Diwadi makes video compression simple. Free, fast, and private.
Download Diwadi Free - Mac, Windows, Linux