Ang raw smartphone recordings mula sa iPhones at Android devices—pati ang screen captures—ay gumagamit ng ultra-high fixed bitrates (25 Mbps hanggang 60 Mbps) para makapagsulat ang hardware encoder ng frames in real time nang hindi nagda-drop ng frames. Dahil dito, madaling lumampas sa 80 MB ang 30-second 1080p clip, na hindi papasa sa Discord, Slack, Gmail, at CMS upload limits.
Imbes na blindly i-crush ang bawat frame sa fixed bitrate, ginagamit ng Video Compressornamin ang libx264Constant Rate Factor (CRF) psychovisual quantization kasama ang optional resolution scaling:
| Compression Preset | CRF Value | Typical File Size Reduction | Best Use Case |
|---|---|---|---|
| High Quality | CRF 23 |
35% – 50% smaller |
Client presentations, portfolio reels, archival HD |
| Balanced (Default) | CRF 28 |
60% – 75% smaller |
Website embeds, Notion docs, Slack & social media |
| Small File | CRF 33 |
75% – 85% smaller |
Discord (<10 MB), WhatsApp, and email attachments |
| Max Savings | CRF 38 |
85% – 92% smaller |
Low-bandwidth previews, bug reports, QA captures |
Ina-apply din ng bawat exported MP4 ang -movflags +faststart, inililipat ang MP4 moov index atom sa harap ng file para makapagsimula agad ng streaming playback ang browsers at mobile apps sa first byte.