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Search topic: ffmpeg presets help
Learn how compression speed presets affect the final file size and CPU usage of your video tools.
Presets in FFmpeg (like 'ultrafast', 'veryfast', 'medium') tell the encoder how much time to spend on motion estimation and entropy coding.
Since processing happens on your device's CPU, 'Slow' presets can take several minutes for long videos. 'Veryfast' is usually the best choice for browser-based tools.
Ready to try this workflow? Open the Video Compressor and apply the steps above.
Explore more in the Learn Center for related workflows.
Related guides:
Related workflow pages:
| Option | Best For | Tradeoff |
|---|---|---|
| Fast baseline setup | Quick first pass | May need a second refinement pass |
| Balanced quality workflow | Most production use cases | Moderate processing time |
| High precision workflow | Critical final output | More manual review |
Why it happens: Using very slow presets for quick social edits wastes time.
Fix: Choose preset based on deadline and hardware capacity.
Why it happens: Assuming preset alone controls quality can lead to unexpected results.
Fix: Tune quality and resolution alongside preset selection.
Theory: Most size wins come from reducing dimensions before aggressive quality drops.
When to use: Lower width first for mobile/social contexts.
Common mistake: Reducing both resolution and quality too far in one pass.
Theory: Container and codec combinations influence compatibility and efficiency.
When to use: Use MP4 for broad compatibility and WebM when size is priority.
Common mistake: Choosing rare combinations unsupported by target apps.
Theory: Loop length and FPS dominate GIF size; frame selection drives thumbnail CTR.
When to use: Trim short loops and choose high-contrast frames.
Common mistake: Exporting long, high-FPS GIFs that exceed platform limits.
Theory: Encoding presets trade CPU time for compression efficiency.
When to use: Use faster presets when turnaround matters.
Common mistake: Using slow presets where deadline outweighs marginal savings.
You need predictable encoding speed and output size for repeated video workflows.
Yes. This page is tailored for that workflow and maps directly to Video Compressor.
Choose preset based on deadline and hardware capacity.
No. Processing runs in your browser on your device.
You need predictable encoding speed and output size for repeated video workflows.
Choose preset based on deadline and hardware capacity.
Using very slow presets for quick social edits wastes time.
Vishal Bagul is a full-stack developer and performance optimization enthusiast. He built Shrinkify to provide a high-performance, 100% private alternative to traditional cloud-based media tools. Every guide on this site is reviewed for technical accuracy and user privacy compliance.
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