AI B-Roll 生成器

從靜止畫面和簡短提示詞製作主要場景周圍的建立鏡頭、細節、天氣和轉場,在與你的影片相同的畫布上。

一幅墨水繪畫,畫著導演椅,旁邊有一個擴音器,地上散落著膠片

僅由主要動作剪輯而成的短片會讓人感到窒息:每個場景都從對白中段開始,然後直接跳到下一個。B-roll,也就是圍繞主要動作的輔助鏡頭,例如場地景觀、細節特寫、天氣或轉場畫面,能讓剪輯有呼吸的空間。在 AI b-roll 生成器出現之前,取得這些鏡頭意味著需要二次拍攝,或使用永遠無法完美匹配的素材庫影片。我們從 10 部在 Flick 製作的影片中挑選了 10 個 b-roll 片段,其中九個是從起始畫格動畫化而成,並閱讀了它們背後的每一個提示詞。本頁面展示每個片段及其確切的提示詞、在 Flick 中製作您自己 b-roll 的四個步驟,以及這些提示詞共同擁有的五個習慣。

描述一個 b-roll 鏡頭

描述鏡頭,或選擇下方的實際提示詞之一,它將作為新 Flick 專案中的第一個請求開啟。

什麼是 AI b-roll?

AI b-roll 是輔助影片素材,是剪輯在影片主要動作周圍的鏡頭,由視訊模型從靜態圖像或提示詞生成,而非實際拍攝。
  • 定場鏡頭:廣角視野,告訴觀眾下一個場景發生的地點和時間。
  • 插入鏡頭:剪入場景的特寫細節,例如燈具、手部或標誌。
  • 切出鏡頭:暫時離開主要動作的鏡頭,例如外面的鳥,然後再返回。
  • 轉場鏡頭:將影片從一個場景、地點或時間帶到下一個的鏡頭。

AI 建立鏡頭

定場鏡頭最好是對場地進行一次緩慢的鏡頭移動,並在提示詞中說明光線和時間。
Drone view of a small sedan on a winding autumn road through misty hills
第一幀:Drone view of a small sedan on a winding autumn road through misty hills
第一幀
00:05

無人機在黎明時分從鄉間道路上拉遠鏡頭

Wide cinematic drone shot slowly pulling back from the winding country road as the small sedan cruises forward peacefully through rolling autumn hills. Soft morning mist drifts across the landscape. Autumn leaves swirl gently in the breeze. Golden light filters through the haze. Calm, unhurried movement — peaceful and idyllic.
M.E. Owens 執導的《One More Day》
含義:空拍鏡頭緩緩後退小轎車在秋季山丘間蜿蜒道路上行駛晨霧飄過落葉紛飛金色光線寧靜祥和
Aerial view of an English country garden with hedges and a brick manor
第一幀:Aerial view of an English country garden with hedges and a brick manor
第一幀
00:25

從起始畫面到結束畫面,先平移再推進

Opening establishing shot, 16:9, 25 seconds, one continuous uninterrupted take. The shot begins wide on the open countryside of the start frame and slowly transitions to settle on the painting cottage of the end frame.

Camera Movement: Begin with a slow, smooth lateral pan drifting across the countryside, gliding over rolling fields, water, and treelines, letting the landscape reveal itself gradually. After the pan carries across the vista, the camera eases into a gentle, steady push-in that zooms toward the cottage, tightening from a sweeping wide vista down to a composed medium framing of the painting cottage as it comes to rest. The motion is continuous and cinematic throughout, one flowing move with no cuts, never rushed.

Scene: Soft natural daylight, gentle atmospheric depth and haze on the horizon, subtle drifting of grass and leaves in a light breeze, calm water surface with faint ripples. Serene, contemplative, cinematic mood.

Audio Constraint: No sound. Completely silent shot.
Sandi Jerome 執導的《Churchill's Mum》
含義:鄉村開闊景觀橫移鏡頭掃過田野水面樹林後推進聚焦小屋柔和日光薄霧寧靜沉思氛圍無聲畫面
Wet truck stop parking lot at night with rows of semi-trucks under lamps00:04

夜晚時分從貨車休息站上方俯衝鏡頭

[00:00] camera booms down on the truck stop at night. a large semi-truck "big rig" drives past camera.
Dr. Dreams 執導的《Catch Out》
含義:夜晚卡車休息站鏡頭下降大型半掛貨車駛過畫面
Pastel cartoon spaceship with round portholes drifting through space
第一幀:Pastel cartoon spaceship with round portholes drifting through space
第一幀
00:05

卡通太空船的緩慢漂移

The spaceship travels slowly through space. The thrusters glow and pulse gently. Subtle light glare sliding across the round windows. Very slow, calm, cinematic drift. Do not rotate. Establishing shot mood.
Katrin Ann Orbeta 執導的《Mila & Sasa》
含義:太空船緩慢漂浮於太空中推進器發光脈動圓窗有光暈滑過平靜電影感建立鏡頭

AI 插入和切換鏡頭

對於細節或插入鏡頭,保持攝影機靜止,只描述會移動的那一個物體,這樣畫面在一兩秒內就能被理解。
Oil lamp glowing beside an old theatre poster on a blue wall
第一幀:Oil lamp glowing beside an old theatre poster on a blue wall
第一幀
00:10

用一句話描述閃爍的油燈

The oil lamp’s flame flickers, which makes the shadow flickers accordingly.
Jaime Yao 執導的《In Our Time》
含義:油燈火焰閃爍使陰影隨之搖曳
Black crow on a weathered fence post above a golden prairie
第一幀:Black crow on a weathered fence post above a golden prairie
第一幀
00:05

一隻烏鴉降落,其他一切靜止

A single black crow flies in and lands on top of the weathered wooden fence post. Once perched, it settles its wings and looks around with quick, natural bird movements, tilting and turning its head to survey the surroundings. Subtle feather ruffle in the light breeze. Everything else stays still: the fence, wires, and blurred golden prairie background hold steady with warm late-afternoon light. Grounded, realistic wildlife motion, no camera movement.
Marius Jensen 執導的《Still Time》
含義:黑烏鴉飛落木柵欄柱頂棲息收翅四處張望轉頭觀察環境羽毛微風中輕顫溫暖午後光線

AI 天氣和氛圍鏡頭

氛圍空鏡將所有動態放在天氣上——暴風雨、雨或風——圍繞著原本靜止的畫面。
Metal chamber half buried in sand in an orange sandstorm
第一幀:Metal chamber half buried in sand in an orange sandstorm
第一幀
00:06

鎖定畫面周圍的沙塵暴

GLOBAL SETTINGS:
Duration: 6s. Aspect ratio: 16:9. No background music, no score. Ambient sound effects only — a deafening sandstorm roar, wind howling, sand hissing and rattling against the metal chamber.

@image1 is the start frame — the exterior of the chamber in the storm. Preserve it exactly.

Camera: locked-off and completely static — no drift, no pan, no tilt, no push. The frame stays exactly where it starts.

Color grade: strict palette — deep teals and cool greys for the chamber #161E20, #253534, #1B2727, #3F5153, #545456, #777775, warm amber #F2A462 and burnt sienna #BE704A for the sandstorm and light. No colors outside this palette. Cinematic photorealism, heavy atmospheric haze, film grain.

MOTION (0–6s):
The sandstorm rages around the static chamber. Sand streams and churns across the frame at speed, driven hard by the wind — tan haze billowing and rolling, thickening and thinning unevenly over the six seconds but never clearing. Loose sand blows and drifts against the base of the chamber, small grains kicking up off the ground. The chamber itself is unmoving, sealed, indifferent — everything alive in the shot is the storm. Relentless, violent, uninhabitable. Camera never moves.
Owen Doerr 執導的《Lifeguard》
含義:沙塵暴中金屬艙體靜止不動黃沙狂風呼嘯肆虐濃霧翻滾青藍灰色與琥珀色調固定鏡頭六秒
Stone kitchen window as a sunny day turns to a thunderstorm
第一幀:Stone kitchen window as a sunny day turns to a thunderstorm
第一幀
00:04

透過窗戶,晴天轉變為暴風雨

Pema's POV looking out through the kitchen window. What was a sunny day suddenly turns: heavy rain lashes the glass, a violent thunderstorm rolls in, wind whipping, a flash of lightning, water streaming down the windowpanes. Handheld camera settling at the window as if she has just stopped there. Anamorphic old lens distortion, muted colors, low contrast, soft focus, cinematic realism.
Raj Rishi More 執導的《Seasons》
含義:佩瑪從廚房窗戶望出去,晴天突然變成暴風雨,閃電劈下,雨水沖刷玻璃,變形鏡頭柔焦電影寫實風格。

AI 轉場鏡頭

轉場鏡頭結束在下一個場景可以切換的畫面,例如全黑或空無一人的房間。
Candlelit chapel with hanging oil lamps just before a gust of wind
第一幀:Candlelit chapel with hanging oil lamps just before a gust of wind
第一幀
00:04

一陣強風吹熄所有火焰,然後是黑色畫面

One continuous locked-off shot.
The camera stays in place with visible irregular handheld drift and small natural balance corrections.
The flames flicker naturally. Smoke continues rising slowly through the firelight.

A sudden gust of wind passes through the chapel.

The visible candle flames and hanging oil-lamp flames bend sharply in the same gust, then extinguish rapidly across the room.

The remaining firelight disappears.

The frame becomes completely black.

Hold briefly on full black.
Jaime Yao 執導的《In ’twixt Vows》
含義:教堂內固定鏡頭拍攝燭火,一陣風吹過,所有火焰彎曲後熄滅,畫面完全變黑並短暫停留。
Toy knight in armour raising one hand in a bare room, before he dissolves into pencil powder
第一幀:Toy knight in armour raising one hand in a bare room, before he dissolves into pencil powder
第一幀
00:10

一名騎士消失,留下空蕩蕩的房間

Locked camera.
The little knight raises one hand and looks at it.
The hand starts dissolving into colored pencil powder first.
The powder spreads from the hand to the arm and the rest of the body.
He quickly dissolves completely into colored pencil powder.
No character remains at the end. No backgoround music.
Jaime Yao 執導的《A Proper Introduction》
含義:小騎士舉起手,身體從手部開始逐漸分解成彩色鉛筆粉末直至完全消失。

如何在 Flick 中使用 AI 製作 b-roll?

製作一張符合您場景的靜態圖,用簡短的動作提示詞讓它動起來,保留最佳效果並將其剪輯到您的場景之間。
  1. 第 1 步

    製作相符的靜態圖

    在屬於該場景的相同地點、光線和色調中生成或上傳畫格,就像《One More Day》的這張開場靜態畫面一樣。

    Still of a silver sedan on a country road in autumn hills, the start frame of a drone shot
    M.E. Owens 執導的《One More Day》
  2. 第 2 步

    只描述動態

    以靜態畫面作為起始畫格開啟圖像轉影片功能,並描述什麼在移動,因為畫格已經確定了地點和外觀。

    Miniature market street in late afternoon haze, where one small figure walks across a still crowd
    第一幀:Miniature market street in late afternoon haze, where one small figure walks across a still crowd
    第一幀
    00:10
    Jaime Yao 執導的《The Herder》 · Seedance 1.5 Pro · 圖像轉影片
  3. 第 3 步

    生成多個鏡次

    多次執行提示詞,每次改變一行,然後在畫布上將最佳鏡次與其他鏡次並排保留。

    Wet wooden ladder rising into heavy rain, filmed as the camera climbs rung by rung
    第一幀:Wet wooden ladder rising into heavy rain, filmed as the camera climbs rung by rung
    第一幀
    00:05
    Jaime Yao 執導的《The Herder》 · Seedance Pro · 圖像轉影片
  4. 第 4 步

    在場景之間剪輯

    將建立鏡頭放在場景之前,將插入鏡頭和切換鏡頭放在場景內部,並將轉場放在一個場景過渡到下一個場景的位置。

    Night still of a rail yard behind a chain link fence, written as the opening shot of a scene
    Dr. Dreams 執導的《Catch Out》

什麼讓 b-roll 提示詞有效?

這 10 部影片中的 B-roll 提示詞保持鏡頭平穩,明確指出動態和光線,並重複主場景的外觀。
  1. 1. 鎖定鏡頭或放慢移動速度

    10 個提示詞中有 7 個鎖定鏡頭或要求緩慢移動,因為平穩的畫面看起來像是刻意的鏡頭,而非故障。

    Everything else stays still: the fence, wires, and blurred golden prairie background hold steady with warm late-afternoon light.
    Marius Jensen 執導的《Still Time》
    含義:柵欄電線和模糊金色草原背景在溫暖午後光線中保持靜止不動。
  2. 2. 明確指出什麼在移動並保持簡短

    10 個提示詞中有 4 個在 50 個字以內,因為有了起始畫格,提示詞只需描述動作,幾乎不需要其他內容。

    The oil lamp’s flame flickers, which makes the shadow flickers accordingly.
    Jaime Yao 執導的《In Our Time》
    含義:油燈火焰閃爍使陰影隨之搖曳
  3. 3. 描述光線

    在提示詞中指明光線和時段,可以讓 B-roll 與周圍場景保持在同一時間。

    Soft morning mist drifts across the landscape. Autumn leaves swirl gently in the breeze. Golden light filters through the haze.
    M.E. Owens 執導的《One More Day》
    含義:清晨薄霧飄過景觀,秋葉在微風中輕旋,金色光線透過霧靄灑落。
  4. 4. 符合主場景的視覺風格

    在提示詞中重複影片的鏡頭、色彩和顆粒感,讓 B-roll 剪接時不會產生視覺跳躍。

    Anamorphic old lens distortion, muted colors, low contrast, soft focus, cinematic realism.
    Raj Rishi More 執導的《Seasons》
    含義:變形老鏡頭扭曲,柔和色調低對比度柔焦,呈現電影寫實主義風格。
  5. 5. 在鏡頭中設計剪接點

    若要做轉場,請在提示詞結尾描述你想剪接的畫面,例如全黑畫面。

    The frame becomes completely black. Hold briefly on full black.
    Jaime Yao 執導的《In ’twixt Vows》
    含義:畫面完全變成黑色並短暫保持全黑狀態。

人們對 AI b-roll 有哪些疑問?

什麼是 B-roll?

B-roll 是圍繞影片主要動作(A-roll)剪輯的輔助鏡頭:建立鏡頭、細節、穿插鏡頭和轉場,用來建立場景並讓剪接更流暢。

AI 可以生成 B-roll 嗎?

可以。圖像轉影片模型可以將地點或細節的靜態影像轉換成短片,並在提示詞中描述攝影機運鏡和動態。

有免費的 AI B-roll 生成器嗎?

你可以在 Flick 免費製作 B-roll:註冊時獲得 100 點數,加入 Flick Discord 再獲得 200 點數。Free 方案包含 MiniMax H3 Fast、MiniMax H3 Max 和 Pruna Draft 影片,Seedance 2.0 和 2.5 則包含在 Standard 方案中(每月 $20)。

B-roll 鏡頭應該多長?

幾秒鐘即可,足以讓觀眾辨識地點或細節,但又不會拖慢故事節奏。在 Flick 製作的影片中,大多數 B-roll 片段長度為 4 到 6 秒。

如何讓 AI B-roll 符合我的主要鏡頭?

從與主場景相同地點、光線和色調的靜態影像開始製作每個 B-roll 片段,然後在提示詞中再次描述鏡頭、色彩和顆粒感。

B-roll 和切換鏡頭有什麼不同?

切換鏡頭是 B-roll 的一種,短暫離開主要動作然後返回的鏡頭;B-roll 也包括建立鏡頭、插入鏡頭和轉場鏡頭。

哪些鏡頭運動最適合 AI B-roll?

固定鏡頭和單一緩慢運動,例如無人機後拉、平移或搖臂下降,因為一個平穩的運動讓模型需要發明的內容更少。

我可以在商業專案中使用 AI B-roll 嗎?

可以。您在 Flick 上生成的內容可用於個人和商業專案;詳情請參閱使用條款。

更多關於在 Flick 中製作 AI 影片的內容

本頁面的影片

製作場景之間的鏡頭

從場景的靜態畫面開始。建立鏡頭、細節和轉場與您的影片保持在同一個畫布上。

在 Flick 製作 b-roll

免費試用,無需信用卡。

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