想降低 AI 創作成本,可以先用短秒數、低解析度的影片測試提示詞與參考素材。確認結果符合預期後,再生成完整長度的影片。如果需要更高的輸出解析度,最後再放大成品。

1. 先用短秒數、低解析度測試
DomoAI 提供多種影片創作方式,可依現有素材選擇合適的工具:
- 全方位參考:結合圖片、影片與音訊參考素材,引導新影片的生成。
- 圖片轉影片:讓靜態圖片中的主體動起來,並加入鏡頭移動。
- 多幀轉影片:依模型支援方式,使用首尾幀或多個關鍵影格引導影片生成。
- 角色轉影片:使用參考影片,讓圖片中的角色動起來。
- 文字轉影片:透過文字描述場景,生成影片。
- 影片轉影片:保留原影片的動作,轉換視覺風格。
本教學使用「全方位參考」中的 Seedance 2.5。加入參考圖片或影片、選擇模型後,先以 4 秒、480P 進行測試。設定畫面比例與音訊選項,並在生成前確認預估扣除的積分。
短片生成可能會將提示詞中的多個場景濃縮成節奏較快的片段。可以藉此檢查影片是否符合構想:場景順序是否正確、主體外觀是否一致,以及有沒有明顯的畫面錯誤。
如果 480P 無法清楚呈現小字或產品細節,這次測試可以改用 720P。
2. 檢查測試片段
先以正常速度觀看,再於看起來不對勁的地方暫停。
- 場景順序符合預期嗎? 檢查是否有遺漏的場景、非預期的切鏡,或事件順序錯亂。
- 有明顯的畫面錯誤嗎? 留意臉部變化、身體扭曲、道具消失,以及物件出現在不該出現的位置。
- 動作有確實完成嗎? 人物是拿起杯子,還是只伸手靠近?動作是否完整?
- 鏡頭有拍到需要的內容嗎? 檢查是否出現不必要的變焦,並確認重要動作都在畫面內。
- 音訊符合需求嗎? 如果需要聲音,請檢查台詞、聲線、背景音,以及嘴型是否與聲音同步。
進行下一次測試前,先選出最主要的問題。如果問題只出現在片尾的一小段,也可以考慮直接剪掉是否就夠了。
3. 提供更清楚的參考素材與指令
指令不夠清楚時,修改提示詞;參考素材缺少重要細節時,更換素材。每次只調整其中一項,模型與其他設定維持不變。
明確指定每份參考素材的用途
參考素材可以補足文字難以說清楚的細節。若想了解如何分配每份素材的用途,請參閱Seedance 2.5 工作流程指南。
角色參考圖應清楚呈現需要的臉部、服裝與配件;動作參考則應展示預期動作。移除細節互相矛盾的素材,例如穿著不同服裝的圖片。
使用介面顯示的參考標籤,說明每個檔案的用途。下方生日影片範例以 @Image1 指定狗狗的身分與外觀,並要求重新生成背景、姿勢和燈光。
清楚描述場景與鏡頭移動
只要各段用途明確,詳細的提示詞也能發揮作用。生日影片提示詞將參考素材指令、視覺風格、七個場景和鏡頭規則分開描述。
逐一說明每個場景發生什麼事,以及鏡頭如何移動。保持順序清楚,刪除互相衝突的指令。透過短片測試,可以觀察模型如何處理完整的場景序列。
依輸入模式調整指令
圖片轉影片的起始圖片已經呈現主體與構圖,因此提示詞可以著重動作。使用多份參考素材時,則需要說明每份素材要採用哪些元素。圖片編輯的提示詞應交代要修改什麼、保留什麼。
了解提示詞與參考素材如何引導 AI 生成,有助於判斷該調整哪一項輸入。
如果改用 MiniMax H3,可以參閱MiniMax H3 提示詞指南中的各模式範例。
4. 生成完整長度的影片
測試片段符合預期後,使用相同的提示詞與參考素材生成完整影片。選擇需要的秒數與生成解析度,確認積分用量後再生成。
範例:狗狗生日影片
短片測試快速呈現幾個主要場景:從特寫拉遠露出狗狗、摸頭、禮物袋、五隻狗狗並排,以及生日結尾。透過這段測試,可以初步檢查場景順序、狗狗外觀和明顯的畫面錯誤。
4 秒測試呈現了預定的場景順序,沒有明顯的畫面錯誤。接著使用相同的提示詞,生成 20 秒影片。
4 秒測試 · 直式
20 秒影片 · 橫式
較長的版本讓每個場景有更多時間展開,包括狗狗從禮物袋探出頭,以及鏡頭橫移拍攝五隻並排的狗狗。
查看完整提示詞
Create a premium minimalist birthday film featuring the dog from @Image1.
REFERENCE USAGE
@Image1 defines the dog’s exact identity and appearance.
Preserve the same dog throughout the entire film:
- same face and facial proportions
- same eyes, nose, ears, and expression style
- same fur color, markings, texture, and coat length
- same body proportions, size, and age
Use @Image1 only as the dog’s identity reference.
Do not copy its background, pose, lighting, camera angle, or composition.
Every dog shown in the film must clearly be the same dog from @Image1.
VISUAL STYLE
Pure white seamless studio background, soft white floor, subtle natural contact shadows, bright diffused lighting, extremely clean composition, generous negative space, and precise centered framing.
The entire film should feel elegant, playful, modern, and highly designed — like a premium product reveal rather than a traditional birthday party.
Use a pure white and warm ivory palette.
Avoid colorful party decorations, crowded props, busy backgrounds, excessive balloons, heavy confetti, or childish birthday styling.
SHOT 1 — MACRO REVEAL
Begin with an extreme macro close-up of @Image1 dog’s nose filling most of the frame.
Slowly and smoothly pull the camera backward.
Reveal the eyes, then the full face, then the entire dog sitting perfectly centered in the white studio.
Preserve the dog’s exact facial identity throughout the pullback.
The dog wears only a very minimal birthday collar with one small elegant ivory accent.
SHOT 2 — PORTRAIT INTERACTION
Clean centered medium portrait of the same dog.
Large amounts of empty white space surround the dog.
The dog slowly looks slightly upward.
A human hand gently enters from above and softly pats the dog once on the head.
Keep the dog calm and natural.
No change to the dog’s face, fur, proportions, or identity.
SHOT 3 — GIFT REVEAL
Hard cut.
A large minimalist ivory-white gift bag stands alone in the center of the studio.
The same dog from @Image1 slowly lifts its head out of the bag and naturally rests both front paws over the edge.
Keep the dog fully recognizable.
No extra decorations.
SHOT 4 — BIRTHDAY COLLECTION
Hard cut to an extreme wide shot.
One tiny version of the same dog sits alone in the center of a huge white space.
After a brief pause, the lineup expands outward from the center.
First, one matching dog appears on the left and one on the right of the original center dog.
Then, one more matching dog appears farther to the left and one more farther to the right.
Finish with five versions of the exact same dog standing side by side in a perfectly symmetrical horizontal lineup, with the original dog remaining in the center.
All five must share exactly the same face, fur, body proportions, and identity from @Image1.
Only the birthday styling changes:
1. minimal ivory party hat
2. small white bow tie
3. tiny ivory birthday cape
4. soft minimal ivory outfit
5. original clean look
All five dogs face forward.
Even spacing.
Perfect symmetry.
No variation in breed, face, fur color, or body shape.
SHOT 5 — LINEUP DETAIL
Cut closer.
Perform one slow, perfectly smooth horizontal camera move across the five identical versions of the dog from left to right.
Each dog remains calm and mostly still.
Emphasize the same recognizable face, detailed fur texture, and subtle styling differences.
The movement should feel like a luxury product commercial.
SHOT 6 — THE BIRTHDAY MOMENT
Hard cut away from the five-dog lineup.
Return to one single dog only — the original dog from @Image1.
The dog sits alone in the center of the white studio, wearing a simple elegant birthday hat.
A small minimalist white birthday cake sits directly in front of the dog.
On top of the cake is one clearly visible number “6” candle with a soft glowing flame.
The dog looks at the cake, then looks toward the camera with a happy, gentle expression, as if celebrating its birthday.
Only one dog appears in this scene.
SHOT 7 — FINAL BIRTHDAY PULLBACK
Continue with the same single dog wearing the birthday hat and the same birthday cake.
The camera slowly and continuously pulls backward.
Medium shot → full body → wide shot → extreme wide shot.
The single dog and cake gradually become smaller while remaining centered in the large white studio.
In the final 1–2 seconds, display:
“Happy Birthday!”
Add a few subtle ivory ribbons, tiny stars, and delicate celebratory accents around the outer edges of the frame.
Keep the dog, cake, number “6” candle, and text clearly visible.
End with only the single birthday dog and cake in the center of the frame.
CAMERA RULES
Smooth controlled camera movement only.
No handheld movement.
No random zooms.
No fisheye distortion.
No dramatic camera shake.
Mostly frontal and symmetrical compositions.
Use hard cuts between major setups.
Within each shot, use only one clear camera movement.
CHARACTER CONSISTENCY — STRICT
The dog from @Image1 is the only character identity reference.
Do not change:
breed,
face,
eye shape or color,
nose,
ear shape,
fur color,
fur markings,
fur texture,
coat length,
body proportions,
size,
or age.
The five-dog lineup consists of five identical versions of the same dog, not five different dogs.
DESIGN RULES
Pure white and warm ivory color palette.
Soft realistic contact shadows.
Premium commercial studio lighting.
Minimal props.
Large negative space.
Clean geometry.
Photorealistic dog and fur.
No visible logos.
No clutter.
No colorful birthday-party background.
No excessive decorations.
OVERALL FEELING
The dog from @Image1 is presented like the most important new product of the year — elegant, slightly humorous, extremely cute, premium, and unmistakably birthday-themed.5. 放大最終影片
如果成品需要更高的輸出解析度,請將影片上傳至影片放大(Video Upscaler)。選擇輸出解析度、確認積分用量,再處理確定要使用的版本。
成本試算:先做短片測試,再生成 20 秒影片
以下以使用 Seedance 2.5 生成一支 20 秒、720P 的影片為例。
第一種方式是生成三次完整影片,並保留第三次的結果;第二種方式是先測試三次短片,再生成一次完整影片。
| 階段 | 直接生成完整影片 | 先做短片測試 |
|---|---|---|
| 測試 | 三支 20 秒、720P 影片:625 × 3 = 1,875 積分 | 三支 4 秒、480P 影片:30 × 3 = 90 積分 |
| 最終 20 秒、720P 影片 | 已包含在第三次生成中 | 625 積分 |
| 合計 | 1,875 積分 | 715 積分 |
在上述假設下,先做短片測試可節省1,160 積分,約 61.9%。兩種方式最後得到的都是直接以 720P 生成的影片。
此計算假設三次短片測試後已得到滿意結果,且只需生成一次完整影片。若需要更多次嘗試,總積分用量也會增加。
另一種方式:以 480P 生成,再放大
也可以先以 480P 生成完整影片,再放大至 1080P:
| 階段 | 預估積分用量 |
|---|---|
| 三次 4 秒、480P 測試 | 90 積分 |
| 一支 20 秒、480P 影片 | 280 積分 |
| 使用 Video Upscaler V2 放大至 1080P | 40 積分 |
| 合計 | 410 積分 |
這種方式的預估積分用量是三者中最低的。不過,放大至 1080P 的影片,在細節與動態表現上可能與直接以 720P 生成的影片不同。單看解析度數字,無法判斷哪個效果更好。
撰文日期:2026 年 10 月 22 日。



