I. Introduction
The 3D holographic fan achieves naked-eye 3D stereoscopic effects through high-speed rotation imaging technology, with image clarity, depth perception, and visual quality being highly dependent on video content production standards. To standardize holographic fan content playback and prevent issues such as image blurriness, ghosting, residual images, flickering, edge artifacts, or loss of stereoscopic effect—ensuring consistent, high-definition, safe, and aesthetically pleasing playback—this content design guide is established. The guide focuses on four core production guidelines: black background, playback duration, product animations, and text layout, applicable to content creation and updates for holographic fans in commercial, exhibition hall, retail, and public settings.
II. Core Rules for Basic Imaging (Black Background Specification)
A black background is the fundamental requirement for accurate holographic fan imaging and serves as the core criterion distinguishing it from conventional display screens in video production. All displayed content must strictly adhere to the following specifications:
1. Background requirements: All video and animation backgrounds must be pure black (RGB: 0,0,0). The use of dark gray, dark blue, or other colored backgrounds is prohibited; white backgrounds, watermarks, borders, or residual background colors are also forbidden. Non-pure black backgrounds may cause screen blurring, image greening, and blurred edges when the device rotates, completely eliminating the holographic stereoscopic effect.
2. Image margin guidelines: The main model, animations, and text content must not be positioned at the edges; instead, maintain uniform black borders around the image to align with the fan's circular viewing area. This prevents image cropping, distortion, or corner loss, and avoids post-processing artifacts or edge flickering caused by content extending beyond the visible frame.
3. Eliminate redundant elements: The video must exclude unnecessary icons, logo backgrounds, subtitle backgrounds, or decorative borders. All non-essential areas should remain completely black and transparent to ensure a clean, clear visual presentation and maximize the 3D floating effect.
III. Specifications for Playing Duration Control
Optimize the playback features for holographic fan cycles and public scene rotations, standardize video duration and playback rhythm to prevent frame lag, playback interruptions, and visual fatigue.
1. Video duration: For standard commercial promotions or product showcases, each video should be kept between 8–15 seconds; brand image videos or comprehensive presentations should not exceed 20 seconds. Excessively long videos may cause abrupt loops and viewer fatigue, while overly short videos (under 5 seconds) may result in flickering visuals and playback instability.
2. Frame Transition: All animated videos must feature seamless loop playback from start to finish, with perfect continuity in frames, brightness, and motion between the opening and closing sequences—no pauses, frame jumps, or screen blackouts—to ensure smooth, natural playback around the clock.
3. Frame Rate Standard: The unified video frame rate is 30 FPS. Materials with low frame rates causing stuttering or high frame rates resulting in motion blur are prohibited to ensure stable high-speed rotating images without flickering or trailing effects.
IV. Rules for 3D Product Animation Design
Product animation serves as the core visual presentation of the holographic fan. To ensure clear three-dimensional effects, premium texture quality, and stable imaging, the following production guidelines must be followed:
1. Subject Proportion Guidelines: The 3D product model should be centered, occupying 60%–70% of the effective imaging area. Its size should be moderate—neither too large to fill the entire screen nor too small to appear empty—ensuring optimal three-dimensional floating perception.
2. Animation rhythm: Product rotation and display animations should feature a smooth, uniform speed, with each full rotation lasting 5–8 seconds. Avoid rapid shaking, excessive speed, or frequent motion transitions; ensure actions are simple and continuous, avoiding complex, multi-dimensional movements that may cause blur, ghosting, or dizziness.
3. Lighting and texture requirements: The product shall exhibit soft, natural lighting with clear highlight and shadow gradations. Excessive exposure, intense light flickering, or high-contrast flash shadows are prohibited. Large-scale flickering or alternating light-dark animations must be avoided to prevent visual glare and potential flicker-related safety hazards in public settings.
4. Special Effect Usage Restrictions: A small number of particle effects, soft lighting, and flowing light effects may be used to enhance visual texture, with moderate transparency and gentle motion. Large-scale dense effects, rapid flashing effects, and full-screen dynamic effects are prohibited to avoid visual clutter and diminished subject prominence.
5. Model accuracy requirements: Product models must have clear edges without jagging or blur-induced stretching. Materials with low resolution, pixelation, or stretching deformations are prohibited to ensure naked-eye 3D high-definition stereoscopic effects.
V. Text Content Design and Limitation Specifications
The holographic fan is a high-speed rotating imaging device with low text tolerance for errors. Improper text formatting can easily cause blurring, ghosting, or illegibility. All text content must strictly adhere to the following restrictions:
1. Font selection requirements: Prioritize bold, sans-serif, or rounded sans-serif fonts with uniform and full strokes; avoid thin, decorative, artistic cursive, or serif fonts to prevent overly thin strokes that may result in broken lines, blurring, or poor legibility.
2. Character limit: Text content on single-screen displays should be minimalistic, focusing on concise copy and keywords; the main title should not exceed 8 characters, and supplementary explanatory text should not exceed 15 characters. Long paragraphs and dense text layouts are prohibited.
3. Typesetting Guidelines: Text should be centered, maintained at an appropriate distance from the product's main visual elements, and presented with clear layering. Prohibited practices include text touching edges, spanning multiple areas, or overlapping; dense multi-line arrangements are not allowed—no more than two lines of text per section—to ensure clear readability from a distance.
4. Text color requirements: Prioritize using high-contrast solid colors such as pure white or pure gold for text; maintain a single, clean color scheme. Prohibited are gradient texts, bordered texts, texts with complex shadow effects, and multi-colored composite texts to prevent artifacts like ghosting, jagged edges, or blurring during rotation imaging.
5. Text animation restrictions: Text should be displayed as static or fade in/out slowly. Rapid scrolling, flashing, pulsating, or zooming animations are prohibited to prevent recognition ambiguity and screen jitter caused by dynamic text.
VI. General Prohibition Rules (Mandatory Guidelines)
1. Prohibited materials include white backgrounds, multi-colored backgrounds, watermarks, logo templates, and materials with unnecessary borders.
2. Prohibited visual content featuring high-frequency flickering, abrupt brightness changes, rapid motion, or full-screen pulsations.
3. Long paragraphs, dense text, and bold artistic text content are prohibited.
4. Materials with stretched images, disproportionate layouts, low clarity, or pixel blur are prohibited.
5. Video content with excessively short durations, looped fractures, or frame跳跃-induced lag is prohibited.
VII. Standard Parameters for Content Output
1. Image aspect ratio: Aligned with the holographic fan's circular imaging ratio, uniformly set to a 1:1 square frame
2. Resolution: 1080×1080 or higher, high-definition without compression
3. Frame rate: 30 FPS (fixed frame rate)
4. Format: Universal MP4 format, no compression, no encryption
5. Background: Full black RGB