The spec for Facebook Reels
Facebook Reels reward speed, clarity, and vertical design. If you stick to the technical spec and design for attention, your brand video will land cleanly and avoid compression or UI clash.
- Aspect ratio: 9:16 vertical. Target 1080 x 1920 px. Avoid pillarboxing or letterboxing.
- Codec and container: MP4 or MOV, H.264 video, AAC audio, 44.1 kHz or 48 kHz. Bitrate 4 to 8 Mbps for 1080p keeps detail without triggering aggressive recompression.
- Frame rate: 24 to 60 fps. Choose one and stick to it across your project to avoid cadence artifacts.
- Duration: Up to 90 seconds. Aim for 30 to 45 seconds for brand explainer cuts that convert in-feed.
- Sound: Reels generally play sound-on, but a large share of viewers start muted. Design so the core value lands sound-off, then enrich with VO and SFX.
- Captions: Burn-in or upload sidecar captions. Always-on captions are the default for brand content.
- Safe zones: Keep critical text and logos out of the UI overlays. Avoid the bottom 20 percent and right 10 percent. Use a 48 to 64 px margin on all sides for 1080 x 1920.
- Cover image: 9:16 still that communicates the hook. No tiny text. High contrast.
The structure that works
Brand videos on Reels win with a tight arc. You have seconds to earn attention, so compress the beats and keep the camera changing every 2 to 3 seconds. Below are time ranges that fit the cap and respect viewer behavior.
30-second cut - use when testing a new hook
- 0 to 2s - Visual hook: arresting motion or bold headline. No preamble.
- 2 to 6s - Problem in one sentence: the pain your persona feels, stated plainly.
- 6 to 12s - Value proposition: how your brand solves it. Show the outcome, not features.
- 12 to 22s - Proof in action: 2 to 3 quick shots of the product in use, a metric, a testimonial micro-quote.
- 22 to 28s - CTA: tell the viewer exactly what to do next. A URL slug or handle, plus a simple action.
- 28 to 30s - Brand stamp: logo lockup, brand mnemonic, and a 1 line benefit reminder.
45-second cut - use for richer demo or layered proof
- 0 to 2s - Visual hook.
- 2 to 8s - Problem relevance with a stat or scenario.
- 8 to 16s - Value proposition expanded: name the persona, show the before and after.
- 16 to 32s - Demo sequence: 3 beats, each 4 to 5 seconds. Screen capture, physical product shot, result screenshot.
- 32 to 40s - Social proof: customer logo mosaic, rating snapshot, short quote with name and role.
- 40 to 45s - CTA and brand stamp.
60 to 90-second cut - use sparingly for evergreen explainers
- 0 to 3s - Hook.
- 3 to 12s - Problem narrative: quick montage, 2 lines of copy, relatable moment.
- 12 to 28s - Solution overview: 2 features tied to outcomes, not a feature list.
- 28 to 52s - Guided demo: on-screen annotations, zooms, and overlays that teach.
- 52 to 70s - Proof stack: case data, before-after, testimonial clip.
- 70 to 85s - CTA with incentive: limited-time offer, free resource, or try-now angle.
- 85 to 90s - Brand stamp and recall line.
Direction note: keep cuts tight, pace dynamic, and motion purposeful. Use motivated camera moves, text animations, and rhythm aligned to your VO or music.
Hooks that earn attention
Hooks should be native to Reels behavior: fast, visual, and specific. Use formulas, then customize to your audience and product.
- Problem-solution snap: name a common failure, then flip it.
- Formula: "Still [pain]? Try [unique solution] in [time]."
- Example: "Still editing 12 versions by hand? Try one brand-safe master cut in 8 minutes."
- Outcome-first promise: lead with the result your user wants.
- Formula: "Get [outcome] without [pain]."
- Example: "Get studio-grade Reels without studio time."
- Data jolt: a credible stat that reframes the viewer's choice.
- Formula: "[Percent] of [persona] do [inefficient behavior]. Here's the fix."
- Example: "74 percent of marketers still render 5 separate aspect ratios. Here's the fix."
- Challenge hook: invite the viewer to test you quickly.
- Formula: "Give me [time], I'll show you [outcome]."
- Example: "Give me 30 seconds, I'll show you a brand video that survives mute."
- Pattern interrupt visual: start with an unexpected macro or motion.
- Formula: big close-up, then snap to the product in context.
- Example: start on a hand scribbling a messy workflow, smash cut to a clean dashboard animating in.
Brand + voice
A single viral hit is nice, but consistent voice compounds. A clear brand kit turns each cut into another rep toward recognition, which reduces cognitive load in the feed and builds trust.
Anchor your Facebook Reels brand video to a kit:
- Typography: 1 display face for hooks, 1 highly legible UI face for captions. Test at 46 to 64 px on 1080 x 1920.
- Color: 1 dominant brand color, 1 accent, 1 neutral. Define motion color roles, for example hook overlays use accent, CTAs use dominant.
- Logo usage: lockup positioning in the top left or bottom right, never in the UI overlay zones. Minimum size 96 px on the short edge.
- Voice: choose tone sliders like direct vs playful, technical vs conversational. Build a 6 line voice crib sheet and reuse it across scripts.
- Motion system: pick 3 transitions and 2 text animations. Reuse them. Consistency beats novelty.
- Audio identity: 2 approved music beds, 5 SFX markers for transitions, and VO normalization at -16 LUFS.
HyperVids supports a per-project brand kit that applies these elements for you. Set logo, color tokens, caption style, safe zones, CTA text, and tone parameters once, then the render pipeline keeps every cut on-brand across hooks and lengths.
Captions + accessibility
Design for sound-off by default. Captions are not an afterthought, they are the scaffolding that carries your message when audio is muted or noisy.
- Always-on: burn-in or upload sidecar. Do not rely on auto-generated captions alone.
- Max characters per line: 32 to 42. Two lines maximum. Avoid triple-line stacks.
- Line timing: 1.5 to 3 seconds visible per line, synchronized with speech. No caption flashes.
- Contrast: minimum 4.5:1 against the background, aim for 7:1. Use a semi-opaque background plate or drop shadow when footage is busy.
- Safe zone: keep captions above the bottom 20 percent to dodge the description and CTA overlays.
- Style: sentence case, minimal punctuation, avoid all caps. Choose a caption font separate from display headlines for legibility.
- Language fit: if your audience is global, avoid idioms that fail in translation. Consider burned-in English plus localized sidecar where appropriate.
- Accessibility: avoid strobe or rapid flashing elements, add descriptive text for non-speech audio like "soft chime" only when it signals meaning.
A sample HyperVids prompt
Here's a realistic one-line prompt you can drop in after you set your brand kit:
"Create a 30-second Facebook Reels brand video that shows how FluxMeter helps retail ops leaders reduce inventory shrink by 22 percent, using our bold blue palette, fast lower-thirds, outcome-first script, captions always-on, and a direct CTA to /demo."
HyperVids ingests the brand context and this single line, then outputs a complete vertical cut: hook headline, VO script, motion cues, shot plan, on-brand captions, safe-zone compliant overlays, and a cover. With the /hyperframes skill and your Claude CLI subscription, it frames shots and writes time-aligned captions that fit the 32 to 42 character rule while keeping the pace tight.
Common failure modes
Patterns that make brand videos flop on Facebook Reels are predictable. Avoid these and your baseline will rise.
- Weak or late hook: if nothing interesting happens in the first 2 seconds, attention is gone. Place your strongest visual right at the start.
- Feature list syndrome: listing features without tying them to outcomes reads like an ad, not a solution. Keep it outcome-first.
- Caption clutter: long paragraphs, tiny text, or captions that overlap UI. Use two lines max and maintain safe zones.
- Low contrast overlays: bright footage behind white text ruins legibility. Add a subtle plate, shadow, or color band.
- Unclear CTA: "Learn more" is vague. Tell viewers exactly where to go and what to do, for example "Tap for a 2 minute demo" or "Try free today."
- Pacing drift: long static shots train the thumb to scroll. Cut every 2 to 3 seconds, even in explainers.
- Inconsistent brand voice: mixing playful lines with dry technical jargon confuses. Use your voice crib sheet.
- Audio imbalance: music overpowering VO, or no VO when the concept needs explanation. Normalize to -16 LUFS and duck music under VO.
- Off-spec export: wrong aspect or bitrate leading to compression artifacts. Stick to 1080 x 1920, H.264, 4 to 8 Mbps.
- Ignoring covers: a hazy frame as the cover kills open rates. Design a cover that restates the hook in 5 words.
Conclusion
Winning brand videos on Facebook Reels are engineered, not improvised. Nail the spec, front-load the hook, speak in a consistent voice, caption for sound-off, and keep the demo outcome-focused. Iterate on short cuts first, then expand into 45 or 60 second explainers as you learn what earns attention. If your pipeline is set up to apply your brand kit and time-aligned captions automatically, you will ship more high-quality cuts with less effort. HyperVids makes that workflow practical by turning brand context and a single prompt into a vertical-ready deliverable you can publish right away.
FAQ
What's the ideal length for a Facebook Reels brand video?
30 to 45 seconds hits the sweet spot. You get room for a hook, a concise outcome-first message, a quick demo, proof, and a CTA without risking drop-off. Save 60 to 90 seconds for evergreen explainers or product launches.
Should I add hashtags to Reels?
Use 3 to 5 relevant hashtags max. Prioritize category and intent tags over generic trends. Place them in the description, not as on-screen text. Focus on a strong hook and clear value, hashtags are secondary.
Can I reuse the same cut on Instagram Reels?
Yes, the spec is compatible. Just check safe zones and cover design against Instagram's UI overlays and test captions for legibility. Export at 1080 x 1920, keep your CTA platform-agnostic, and adjust the handle or URL if needed.