The spec for Facebook Reels
Facebook Reels favor crisp vertical talking-head videos that deliver value fast. Hit these specs to avoid quality downgrades and layout surprises:
- Aspect ratio: 9:16 vertical - record native portrait on your phone or a vertical camera setup
- Resolution: 1080 x 1920 recommended - keep text in the central safe area to avoid UI overlays
- Duration: Up to 90 seconds - aim for 35 to 60 seconds for strongest completion
- Frame rate: 30 fps standard, 60 fps is fine if motion heavy
- Codec: MP4 with H.264 video and AAC audio at 44.1 kHz
- Audio behavior: Many viewers autoplay muted - design for sound-off first and reward sound-on
- Captions: Expected - add burnt-in captions or enable platform auto captions and review
- Safe margins: Keep critical text inside a 1080 x 1920 frame with at least 120 px from edges
Plan your talking-head shoot around these constraints so the hook lands in the first second, text remains readable, and your call to action survives the feed UI.
The structure that works
A talking-head Reels format thrives on tight beats, punchy delivery, and visible proof. Use this map to hit the feed window and maintain velocity:
- 00:00-00:02 - Hook: A sharp, specific promise or tension. The first 2 seconds decide retention.
- 00:02-00:05 - Setup: One sentence on who this is for and the payoff.
- 00:05-00:20 - Context: Show the problem quickly. Cut in a minimal overlay, prop, or screen for credibility.
- 00:20-00:45 - Solution: Deliver the fix. One to three steps. Keep pace brisk, sentences short.
- 00:45-00:55 - Proof: A quick before or after, a metric, or a concise demo clip that visualizes the win.
- 00:55-01:05 - CTA: One action. Comment keyword, save for later, or tap to see the full guide. Avoid multi-CTA.
- 01:05-01:20 - Optional bonus: Rapid Q&A lightning round or one extra tip if you are still above 50 percent retained.
Each beat should be scannable with captions. Fill dead air with B-roll, overlays, or tight jump cuts. If a sentence does not serve the hook, cut it.
Hooks that earn attention
Great hooks start specific, create immediate contrast, and signal a tangible outcome. Use these formulas and examples:
- Formula: Stop doing X, do Y instead - Example: Stop recording 4K for Reels, use clean 1080 vertical and your captions will pop
- Formula: The one setting that changes everything - Example: The one mic setting that removes room echo in 10 seconds
- Formula: You are losing Z because of X - Example: You are losing 40 percent retention by putting your CTA at the end
- Formula: I tested A vs B, here is the winner - Example: I tested jump cuts vs one-take on Reels - jump cuts win by 22 percent
- Formula: If you do X, this saves you Y - Example: If you post talking-heads daily, this 3-line caption template saves 30 minutes
Make your hook a spoken line plus on-screen text. Reading plus hearing cements the point and covers sound-off viewing.
Brand + voice
One viral post is lucky. A consistent brand kit and voice turns every post into a compounding asset. Your audience learns to trust your framing, pacing, and outcomes across videos, which lifts repeat views and save rates.
A strong brand kit includes color system, type scale, caption style, lower-third, logo lockup, and CTA phrasing. Keep voice traits explicit - tone, jargon level, sentence length, pace, and what you never say. Set constraints like unified verbs for CTAs, capitalization rules, and maximum on-screen words per beat.
Per-project brand kits in HyperVids make this simple. For each reel you can lock a caption style, font pairing, color contrast rules, lower-third placement, CTA wording, and a visual hierarchy tuned to 9:16. The kit keeps your output consistent even as topics change.
Consistency beats novelty on Facebook Reels because viewers get very little context in feed. If your voice and design telegraph familiarity within the first second, you clear the trust hurdle and earn more completions.
Captions + accessibility
Assume sound-off and build for legibility on a small screen. Follow these caption rules:
- Always-on captions: Burn them into the video or enable auto-captions and audit the transcript
- Character limit: Aim for 28-34 characters per line, maximum 2 lines
- Font size: Minimum 60 px at 1080 x 1920, with a generous x-height for readability
- Contrast: Maintain at least a 4.5:1 contrast ratio. Use a semi-opaque background plate if your footage is busy
- Placement: Bottom third is typical, but avoid the lowest 240 px. Stay inside a 120 px margin from all edges
- Casing and punctuation: Sentence case reads faster. Avoid full caps blocks. Keep punctuation light
- Timing: Pop the caption within 200 ms of the spoken line. Don't lag more than half a second
- Keywords: Bold or color-highlight one keyword per line, not more
For accessibility beyond captions, avoid red-green combinations, keep motion subtle behind text, and never layer essential text over high-frequency patterns. Test your reel at 25 percent playback speed to catch flashing or hard cuts that may be uncomfortable.
A sample HyperVids prompt
Here is a single-line prompt you can drop in, assuming your brand kit is already configured:
"Talking-head - Facebook Reels - 9:16 - 45s - Hook: Stop crippling your mobile retention with low-contrast captions - Show: demo of caption color swap and 18 percent lift - CTA: comment 'contrast' for the color kit"
With a brand kit applied, HyperVids will generate a beat-timed script, shot list, talking points, caption overlays that meet the contrast rule, and a lower-third styled to your kit. The /hyperframes skill maps your hook, solution, and CTA into time-bound shots with cut points aligned to retention-friendly beats. You get a finished vertical video or editable timeline that respects the Reels constraints.
Common failure modes
- Soft hooks and slow starts: If your first sentence is vague or takes more than 2 seconds, expect early swipes
- Audio haze: Room echo or clipping destroys perceived quality. Use a lav or dynamic mic, record close, and add light noise reduction
- Wrong framing: Eyes too low or too high breaks connection. Anchor eyes at the top third grid line
- Text overload: More than two caption lines or small fonts become noise. Trim copy and increase size
- Busy backgrounds: High-detail backdrops make captions unreadable. Add a subtle blur or neutral wall
- Overlong demos: The fix must fit within 20-25 seconds. Push deeper details to comments or a follow-up post
- No visual proof: Claims without a quick metric or comparison feel like fluff. Add one proof beat
- Muddy brand signals: Inconsistent colors, fonts, or CTA language erode trust. Lock a kit and stick to it
- Low energy delivery: Monotone and slow cadence loses retention. Shorten sentences and add micro-pauses on keywords
- Premature CTA: Asking for comments or follows before delivering value causes drop-offs. Earn the ask after proof
Conclusion
Facebook Reels reward speed, clarity, and consistency. Start with a specific hook in the first 2 seconds, compress your solution into 25 seconds, show proof, and make a single CTA. Keep captions legible with strong contrast and tight line lengths, and maintain a consistent brand kit and voice across posts. Treat each reel like a repeatable template you can iterate weekly.
Use tooling that enforces structure and accessibility so you spend your energy on insight rather than layout. The right guardrails turn a talking-head format into a reliable growth engine.
FAQ
Should I shoot native vertical or crop from horizontal?
Shoot native 9:16. Cropping a landscape frame reduces perceived resolution, complicates caption placement, and often yields awkward eye lines. If you must crop, frame loose, keep eyes near the top third, and test caption legibility before posting.
What is the ideal length for most talking-head Reels?
35-60 seconds generally balances depth and completion. If your hook is ultra-tactical, 20-30 seconds can outperform. If you show proof plus a brief Q&A, 60-75 seconds can still retain, but watch your audience drop-off in analytics and trim accordingly.
How do I make my audio sound clean in a noisy room?
Get the mic close, face soft furnishings, and reduce gain to avoid clipping. Add a high-pass filter around 80 Hz, light compression at 2:1, and gentle noise reduction. Record room tone for 5 seconds and use it to profile noise if your editor supports it.