This guide is prepared by the BestAI Editorial Team. It explains recommended workflows, not guaranteed performance. Always review automated output before publishing.
Recommended starting preset
For a talking-head video, start with 9:16, Smart Crop enabled, a 30 to 50 second target, sentence-safe cutting, normal playback speed and subtitles near the lower safe area. Keep the original colour unless the source looks flat or poorly balanced.
Treat this as a starting point rather than a fixed rule. Screen recordings, cinematic clips, music videos and interviews may require different crop and audio choices.
- Ratio: 9:16 for vertical Shorts.
- Smart Crop: On when one face is the main subject.
- Speed: 1.00 for natural speech; small changes only when needed.
- Subtitles: On for dialogue-heavy content.
- Music ducking: On when background music competes with speech.
- Preview: On when testing a new preset.
Duration and clip selection
Choose duration based on the idea, not a trend. Short clips work well for a single reaction or fact. Longer clips work when the viewer needs setup and a payoff. When producing several outputs, evenly spaced selection is useful for coverage, random selection is useful for discovery and sequential selection is useful for a continuous series.
Review every automated selection. An editor can find time ranges, but only you can confirm that the chosen moment is accurate, respectful and complete.
Crop and framing
Use face-focused cropping for interviews and vlogs. Use centre crop for stable subjects and contain mode when the entire frame is important. If the speaker moves from side to side, preview the crop before rendering a large batch.
Avoid placing key text at the extreme top or bottom. Platform overlays, captions and buttons can cover those areas on mobile devices.
Subtitles and text
A simple, high-contrast subtitle style is easier to read than a heavily decorated style. Use a font size that remains readable on a small screen and keep each line short. Highlight only the active word or important phrase when the effect supports the pacing.
Always proofread automatic subtitles. Names, Bangla compound words, English brand names and mixed-language speech often need manual correction.
Audio settings
Keep dialogue near the centre of the mix and reduce background music when speech begins. Vocal separation can help some sources, but it may introduce artefacts when the original audio is heavily compressed or contains overlapping voices.
Sound effects should support a transition or visual action. Repeating a loud effect on every cut can reduce viewer comfort and make the edit feel less professional.
Colour and transitions
Original colour is the safest default. Use a style only when it improves consistency or matches the subject. Strong HDR-like processing can clip highlights and exaggerate skin tones, so compare the result with the original.
For most Shorts, direct cuts or very short transitions feel faster than long fades. Use transitions to connect different scenes, not to decorate every edit.
Frequently asked questions
What is the safest default ratio?
Use 9:16 for a standard vertical Short.
Should I speed up every video?
No. Keep 1.00 when the speaker already sounds natural. Small changes are better than aggressive speed increases.
Do settings guarantee more views?
No. Settings improve presentation, while results still depend on the topic, hook, value and audience response.