Raw smartphone recordings from iPhones and Android devices—as well as screen captures—use ultra-high fixed bitrates (25 Mbps to 60 Mbps) so the hardware encoder can write frames in real time without dropping frames. As a result, a 30-second 1080p clip easily exceeds 80 MB, failing Discord, Slack, Gmail, and CMS upload limits.
Instead of blindly crushing every frame to a fixed bitrate, our Video Compressoruses libx264Constant Rate Factor (CRF) psychovisual quantization alongside 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 |
Every exported MP4 also applies -movflags +faststart, relocating the MP4 moov index atom to the front of the file so browsers and mobile apps begin streaming playback on the first byte.
