HDR10 Workflow

HDR10 Workflow

Why HDR Matters

HDR（High Dynamic Range）能在同一畫面內同時保留更亮的高光與更深的暗部細節，並配合更寬廣的色域，使天空、雲層、雪地、極光等場景看起來更接近肉眼感受。

Dolby Vision vs HDR10：你需要知道的差異

Dolby Vision 是 HDR 的一種格式，特色是使用 動態中繼資料（dynamic metadata），可做到「逐場景甚至逐影格」的亮度/色彩最佳化；但正式的 Dolby Vision 母版製作通常牽涉授權、工具鏈與更嚴格的監看條件，因此對獨立創作者而言門檻高。

HDR10 則是目前最通用、最容易落地的 HDR 格式：同樣採用 Rec.2020 色域 + PQ（ST2084） 的 HDR 亮度曲線，但通常是 靜態中繼資料（static metadata）。對於展示型作品（風景、天文、極光、縮時）而言，一個調得好的 HDR10，觀感已非常接近你在 Dolby Vision 影片中喜歡的那種「亮、深、豐富、通透」。

關鍵結論（先講清楚）

SDR（Rec.709）影片無法被「真正變成」原生 Dolby Vision。 若素材本身沒有捕捉到足夠動態範圍與位元深度，後期只能做「升轉」與「風格化擴展」，不是原生 HDR。

你用 Canon R5 拍 RAW 照片做縮時，其實是優勢：只要不要在流程中提早降成 8-bit（例如 JPEG），就能做出非常扎實、觀感極強的 HDR10。

---

你的最佳實務流程（Canon R5 RAW → 16-bit TIFF → Resolve 20 → HDR10）

Step 1｜Lightroom：保留 HDR 所需資訊

請避免：RAW → JPEG（會變成 8-bit、動態範圍與色彩資訊大幅縮水）

建議：RAW → 16-bit TIFF

TIFF 的好處：
• 保留高位元深度（避免天空/極光漸層破圖）
• 更寬容的調色空間（更利於 PQ HDR 的亮度重分配）
• 對縮時影格一致性更好

Step 2｜DaVinci Resolve 20：正確的 HDR 專案設定

File → Project Settings → Color Management

建議設定（穩健、好控）：
• Color science：DaVinci YRGB Color Managed
• Timeline color space：DaVinci Wide Gamut
• Timeline gamma：ST2084 (PQ)
• Output color space：Rec.2020
• Output gamma：ST2084 (PQ)
• 勾選：Use separate color space and gamma

Step 3｜匯入影像序列

將 TIFF 以「Image Sequence」方式匯入（不要逐張照片手動拖入）。

Step 4｜HDR 調色重點（以 OLED 為目標）

在 Color Page：
• 使用 HDR Wheels / Scopes（若可用 nits 模式更佳）
• 控制高光不要硬切（避免「亮但刺眼、雲層死白」）
• 暗部保持細節（OLED 黑位漂亮，但不要把暗部全部壓死）

實務目標（給你一個可參考的範圍）：
• 最亮高光：600–800 nits（依你畫面需求與 OLED 實際峰值調整）
• 一般亮區（雪地/亮雲）：300–500 nits
• 暗部：接近 0 但保留層次

Step 5｜輸出 HDR10 Master（給 LG OLED、存檔、未來通用）

Deliver：
• Format：MP4
• Codec：H.265 (HEVC)
• Profile：Main10（10-bit）
• Color Space Tag：Rec.2020
• Gamma Tag：ST2084 (PQ)
• 開啟：HDR10 Metadata（若介面有此選項）

建議 HDR10 Metadata（常見安全值）：
• MaxCLL：1000
• MaxFALL：400

---

LG OLED B4 播放與系統設定（非常重要）

Windows：
• Display Settings → 對該螢幕開啟 HDR = ON

LG OLED B4：
• 建議模式：Filmmaker Mode / Cinema
• 關閉：Dynamic Contrast、過度銳化、Vivid 類模式
• HDMI 端口：開啟 HDMI Deep Color / 4K HDR

判斷是否為真 HDR：播放時電視通常會顯示 HDR / HDR10 提示或資訊頁顯示 HDR。

---

為什麼你仍然需要 SDR 與 Projector 版本

1）SDR（Rec.709）版本：給一般螢幕、Facebook、非 HDR TV

大多社群平台與部分裝置會把 HDR 轉成 SDR，若直接丟 HDR10，常見結果是：
• 變暗、發灰、對比不對

解法：在 Resolve 複製專案或加 CST 做 HDR→SDR 轉換，輸出 Rec.709 Gamma 2.4 的版本。

2）Projector 版本：講座/教室投影的必備

多數投影機仍是 SDR（Rec.709）。HDR10 在投影機上常會偏暗、平、灰。

建議：輸出 1080p H.264（Rec.709, Gamma 2.4），並略微提升中間調與暗部，讓夜景與極光在大場地更容易看清。

---

最簡單的交付策略（我自己會這樣整理）

• HDR10 Master（MP4 / HEVC Main10 / Rec.2020 PQ）— 給 OLED、存檔、YouTube HDR
• SDR Master（MP4 / H.264 / Rec.709 2.4）— 給一般螢幕、Facebook、分享
• Projector（MP4 / H.264 / 1080p / Rec.709 2.4）— 給講座與投影系統

一句話總結

對你的創作而言，HDR10 是最實用、最通用、也最接近 Dolby Vision 觀感的「可落地工作流」：只要把 RAW 的高位元深度一路保留下來（16-bit TIFF），在 Resolve 20 用 PQ 正確調色與正確標記輸出，你在 LG OLED B4 上看到的極光與夜景，會比多數一般 HDR 相機影片更乾淨、更細膩。

Red Aurora Banff 班芙紅極光

Red Aurora Banff 班芙紅極光

11 月 11 日之所以在北美和高緯度地區出現大片的純紅色極光，是因為當天地球受到多次高速日冕物質拋射（CME）的連續撞擊，地磁場劇烈擾動，形成 Kp 8–9 的強烈地磁暴。太陽風中的磁場長時間向南，使得地球磁層出現深層重連，並帶來大量粒子注入環電流區。這些條件讓能量較低但速度很快的電子停留在大氣非常高的位置，大約 200 到 500 公里之間，而沒有進入通常會產生綠色極光的較低高度。

在這些高空中，稀薄的大氣讓氧原子能持續發出 630.0 奈米的紅光。因為碰撞很少、光的壽命長，這種紅色輻射會緩慢而均勻地向外散開，看起來像是一整片柔和、廣闊的紅色天空，而不是我們熟悉的跳動綠色光幕。這次的電子能量不足以深入到 100 公里左右的大氣層，因此綠色極光幾乎沒有被激發，整個夜空便呈現罕見的純紅光。

此外，由於紅光來自高空，它更容易水平擴散，加上地磁場線的影響和熱層被加熱後的膨脹，使這種紅色光輝覆蓋範圍極廣，甚至能在遠離極區的地方清楚看到。當晚許多地區還同時拍到類似 SAR 弧的現象，那是一種細長且穩定的紅光帶，通常與環電流的能量傳導有關，也只會在強地磁暴時出現。這些現象加在一起，造就了那晚異常壯觀、如夢似幻的純紅極光景象。



On November 11, the rare display of pure red auroras seen across North America and other high-latitude regions was caused by a combination of an extremely strong geomagnetic storm and high-altitude oxygen emissions. Several fast coronal mass ejections (CMEs) struck Earth in succession, pushing the geomagnetic field into Kp 8–9 storm levels. The solar magnetic field pointed strongly southward for a long period, allowing deep magnetic reconnection and injecting large numbers of particles into the ring current. Under these conditions, fast but relatively low-energy electrons were guided into the upper thermosphere, around 200 to 500 kilometers high, instead of reaching the lower altitudes where green auroras normally form.

In this rare high-altitude region, the thin air allows oxygen atoms to emit red light at 630.0 nm for a long time without being quenched by collisions. Because this red emission spreads slowly and smoothly across the sky, it appears as a broad, soft, diffuse glow rather than the familiar dancing green curtains. Since the electrons did not have enough energy to penetrate down to 100–120 kilometers — the layer that produces green auroras — the green band was never activated, leaving the sky dominated by red light.

Red auroras at such high altitudes also spread widely across the horizon. The thin atmosphere, the way magnetic field lines map across the globe, and the heating and expansion of the upper atmosphere all help the red light stretch over huge distances, allowing even areas far from the auroral zone to see it clearly. Many observers also recorded features resembling SAR arcs — long, steady red bands linked to energy flowing from the ring current — which commonly appear during major geomagnetic storms. These combined effects created the extraordinary and dreamlike all-red aurora show of that night.

Aurora Time-Lapse Workflow

Aurora Time-Lapse Workflow

Purpose

This post documents a complete, practical Aurora Time-Lapse workflow using only built-in tools in DaVinci Resolve Studio. It is optimized for:

• High-resolution RAW aurora stills (Canon R5 vertical 5464×8192)
• 100+ frame image sequences
• Natural motion (not “too fast”)
• Smooth transitions
• Minimal flicker
• High-quality archival master + social versions

---

# 1. Prepare Files (Before Resolve)

1) Show file extensions (Windows)
File Explorer → View → Show → ✔ File name extensions

2) Ensure a clean numeric sequence

Example:
Aurora_0001.jpg
Aurora_0002.jpg
Aurora_0003.jpg
…

If needed, rename with Adobe Bridge / FastStone / Bulk Rename Utility.

3) Keep folders “one sequence per folder”
This prevents Resolve from accidentally grouping different nights/locations together.

---

# 2. Import Properly (Image Sequence)

1) Go to the MEDIA page (recommended for clean ingest)

2) Media Storage panel → three-dot menu
✔ Show Image Sequences = ON

3) Confirm Resolve displays ONE clip
Example: Aurora_0001–Aurora_0100

4) Drag that single sequence clip into the Media Pool
This guarantees correct ordering and consistent playback.

---

# 3. Project Settings (Master Setup)

File → Project Settings → Master Settings

Timeline resolution (Master)
Option A (Maximum detail / archive): 5464×8192 (vertical master)
Option B (Practical master for wider compatibility): 3840×2160 (4K) with your vertical sequence framed inside

Timeline frame rate
• 24 fps (cinematic, recommended)
• 30 fps (also fine if you prefer)

Color management (SDR workflow)
• DaVinci YRGB (or Color Managed)
• Rec.709 Gamma 2.4 (unless you are mastering HDR)

---

# 4. Build the Timeline

Go to the Edit page → drag the sequence clip to the timeline.

Rule of thumb:
100 frames at 24 fps ≈ 4.17 seconds

---

# 5. Make Aurora Motion Feel Natural (Speed Control)

Aurora often looks “too fast” in a raw time-lapse. Choose one method:

Option A — Change Clip Speed (simplest)
Right-click clip → Change Clip Speed:
• 25% (4× slower)
• 20% (5× slower)

Option B — Interpret Frame Rate (professional)
Right-click clip → Clip Attributes → Video Frame Rate:
• 24 fps → 6 fps (4× slower)
• 24 fps → 4 fps (6× slower)

Then place into a 24 fps timeline.

---

# 6. Reduce Flicker (Resolve Studio Built-In)

Go to the Color page:

1) Add a Serial Node
Right-click node graph → Add Node → Add Serial

2) Apply Deflicker
Effects → search “Deflicker” → drag onto that node

Practical starting values
• Strength: 2–4
• Sensitivity: Low / Medium

Note:
Deflicker can also smooth some natural aurora pulsing; keep it moderate to avoid “flattening” the light.

---

# 7. Add Gentle Camera Motion (Ken Burns)

Edit page → Inspector → Transform (keyframe Zoom/Position)

Start keyframe
• Zoom: 1.00
• Position: centered

End keyframe
• Zoom: 1.10–1.20 (subtle is best)
• Small X/Y drift (optional)

Smoothing
Open keyframe curves → apply Ease In / Ease Out

---

# 8. “Smoothing Transitions” — The Correct Way

Important:
If your time-lapse is imported as one image-sequence clip, you cannot apply cross dissolves between frames unless you first create cuts. In practice, you have two clean options:

Option A — Keep as one clip (recommended)
Use:
• Deflicker (for exposure jumps)
• Mild Noise Reduction (to calm shimmer/noise)
• Optional Optical Flow only when needed (see Step 11)

Option B — If you truly want dissolves
This is only recommended for short segments:
Convert the sequence into individual frame clips (or import as individual stills)
Then add very short dissolves (e.g., 2–4 frames)

Caution:
Doing this across hundreds/thousands of frames becomes heavy and usually unnecessary.

---

# 9. Color Correction (Practical Node Recipe)

Color page:

Node 1 — Base Balance
• Exposure / contrast balance
• White balance (aurora scenes often look natural around 3500–4200K, but trust your eyes and scopes)

Node 2 — Contrast & Curves
• Gentle S-curve
• Avoid crushing shadows (keep star field / landscape separation)

Node 3 — Saturation Control
• Increase saturation carefully
• Keep greens/purples natural (avoid neon clipping)

---

# 10. Noise Reduction (Use Lightly)

Temporal NR (Studio):
• Frames: 2
• Motion Estimation: Better
• Apply more to Luma than Chroma (start subtle)

Guideline:
Too much NR can erase fine aurora texture and create “plastic” gradients.

---

# 11. Optional: Ultra-Smooth Slow Motion (Optical Flow)

Inspector → Retime and Scaling:
• Retime Process: Optical Flow
• Motion Estimation: Enhanced Better

Use this selectively:
• Good for slow, flowing curtains
• Risky for fast corona bursts or sharp star fields (can warp/ghost)

---

# 12. Export (Master + Social Versions)

A) Archival Master (highest quality)
Deliver:
• Format: QuickTime
• Codec (Windows-friendly): DNxHR HQX (10-bit)
• Codec (Mac-friendly): ProRes 422 HQ
• Resolution: timeline resolution
• Frame rate: 24 fps

This is your “forever master” for future re-edits.

B) Efficient High-Quality Master (smaller file)
• Format: MP4
• Codec: H.265 (HEVC)
• 10-bit if available (Main10)
• 4K deliver (recommended): 3840×2160
• Bitrate: 60–120 Mbps (depends on detail and motion)

C) Social / Mobile
• YouTube: 4K MP4 (H.265 or H.264 High)
• Instagram Reels / Shorts: 2160×3840 vertical (or 1080×1920)
• Keep titles minimal; avoid heavy sharpening (social platforms re-compress aggressively)

---

Final Summary (one paragraph)

Import your aurora stills as a properly grouped image sequence, build a 24 fps timeline, and slow the clip to a natural pace (25% speed or interpret to 6 fps). Use Resolve Studio’s Deflicker to suppress exposure jumps, add subtle Ken Burns motion for cinematic life, and apply restrained color/NR to preserve aurora texture and gradients. Export a true archival master (DNxHR/ProRes), then create separate 4K and vertical social versions for online sharing.

Long Black Veil 長黑紗

Long Black Veil 長黑紗

Long Black Veil 長黑紗

Long Black Veil version 1 長黑紗 版本 1

Title: 長黑紗

Artist: Chen (Original AI Folk Ballad)

[Verse 1]
夜色深深　寒光如霜
街燈搖曳　影子成雙
有人倒下　在黑暗中央
眾人驚呼　誤指我為兇狂


[Verse 2]
他們問我　是否能證明清白
我只沉默　不願她受傷害
那夜我們　曾相擁而在
若真相說出　她將永難安然


[Chorus]
她披著長黑紗　夜訪我墳旁
風掠過她髮香
無人知　無人見
唯有我魂在身旁


[Verse 3]
鐘聲迴盪　黑夜無常
月光落下　照我斷想
她在人群裡　無聲淚光
而我微笑　迎向最後一場


[Chorus Repeat]
她披著長黑紗　夜訪我墳旁
風掠過她髮香
無人知　無人見
唯有我魂在身旁


[Outro]
夜風嘯　心微涼
幽魂聽她哭一場



--------------



🎼《長黑紗》音樂影像簡介

練習作品參考 Joan Baez 瓊·拜亞 民謠〈The Long Black Veil〉為主題，結合 AI 生成的音樂與畫面，故事源自一段無法訴說的愛：一名男子被誤指為兇手，明知能證明清白，卻選擇沉默，只為守護他所愛的女子。多年後，女子夜訪他的墳前，披著長黑紗，在月光與霧氣間低語，只有他的靈魂在旁聆聽她的哭泣。

音樂以 柔和女聲與木吉他為主軸，配以 大提琴與古箏的哀調，節奏緩慢而深情。旋律如夜風輕拂墓地，流露一種無言的痛與永恆的守候。

畫面呈現的核心意象：
構圖：女子身著黑紗，靜立於墓碑前，低首而泣，構成一條從月光到墳碑的情感軸線。
光影：明月如魂魄之眼，冷色光灑落於黑紗之上，象徵記憶與悲傷的交融。
氛圍：霧氣與陰影彷彿時間的迷霧，隱喻秘密的愛與未盡的悔。
風格：結合 哥德浪漫主義與寫實油畫質感，既具視覺張力，又帶靜謐的詩性。




✨ Brief English Summary

Aspired by the Joan Baez's “The Long Black Veil” , the film clip created is a Mandarin folk song paired with an AI-generated visual — a woman in a long black veil visiting her lover’s grave at midnight. The man, wrongly accused of murder, stayed silent to protect the woman he loved, choosing death over her disgrace. Now she returns at night, whispering to his grave under the pale moon.

The image captures her sorrow and secrecy — cold moonlight, drifting mist, and gothic romantic tones. The music, blending acoustic guitar, cello, and guzheng, echoes her grief with gentle, haunting beauty. It is an artistic meditation on love, sacrifice, and the silence that outlives death.



🎧 Suno Music Prompt

A slow, emotional Mandarin Chinese folk ballad with female vocal and acoustic guitar, blended with soft cello and guzheng. The song tells of a man wrongfully accused of murder who stays silent to protect the woman he loves. After his death, she visits his grave at night, veiled in black, whispering to the wind. Poetic, melancholic, and cinematic — 70 BPM, delicate phrasing, emotional and timeless tone.



🎨 MidJourney Prompt:

a woman in a long flowing black veil visiting a grave at midnight under a full moon, her face half-hidden, the veil swaying softly in the cold wind, surrounded by mist and ancient tombstones, a sense of sorrow, silence, and eternal love, she touches the gravestone gently as moonlight filters through drifting fog, the background filled with dark trees and silver mist, fine art cinematic realism, gothic romantic atmosphere, oil-painting texture, chiaroscuro lighting, soft diffusion, highly detailed fabric folds, emotional depth, moody color palette of deep blue, grey, and pale silver, volumetric light, painterly composition, masterpiece, evocative mood, art by Caspar David Friedrich and John Atkinson Grimshaw style