샷마다 가장 좋은 AI 영상 모델을 고르는 법
6가지 기준과 빠른 비교 테스트로 샷마다 맞는 AI 영상 모델을 고르는 법을 배우세요. 그리고 비용을 줄이세요: 드래프트를 먼저 뽑고, 승자만 완성합니다.
이 강의에서 배울 내용
- AI 영상 모델을 고르는 6가지 기준: 일관성, 움직임, 얼굴, 사운드, 길이와 해상도 제한, 비용과 속도
- 두세 개 모델을 공정하게 나란히 테스트하고 결과를 채점하는 법
- 녹화 당시 ScreenWeaver가 제공하는 영상 모델과, 서사가 있는 씬에 추천하는 기본값
- Seedance 2.5 드래프트 모드로 비용 아끼는 법: 480p로 드래프트를 뽑고, 이긴 테이크만 1080p로 완성
- 씬 전체를 클립 하나로 생성할 때와 샷별로 갈 때
- 생성 버튼을 누르기 전에 생성 사운드를 샷마다 정해야 하는 이유
AI 영상 모델을 고르는 일은 시장에서 최고의 모델을 찾는 것이 아닙니다. 모델은 몇 달마다 바뀌니, 이 강의는 모델보다 오래 살아남는 방법을 줍니다. 영화에 맞춰 6가지 기준(일관성, 움직임, 얼굴, 사운드, 길이와 해상도 제한, 비용과 속도)의 순위를 정하고, 같은 레퍼런스와 프롬프트로 같은 샷을 두세 개 모델에서 돌려 결과를 나란히 채점합니다. The Photo의 마지막 클로즈업을 예로, 가장 비싼 모델이 결말을 끌고 가는 샷에는 그만한 값어치가 있지만 단순한 설정 샷에는 그렇지 않은 이유를 봅니다. 녹화 당시 ScreenWeaver에서 쓸 수 있던 Seedance 2.5, Veo 3.1, Kling 3.0 등 영상 모델 둘러보기, AI 영상 비용을 통제하는 드래프트 후 완성 전략, 씬당 클립 하나 또는 샷당 클립 하나를 생성하는 실용적인 원칙도 배웁니다.
전체 스크립트
영어 내레이션의 스크립트입니다.
0:04There is no best video model. There's the best model for a given shot on a given day. Models change every few months. So in this lecture, you'll learn a method that outlives them. The criteria that matter, a quick test to compare models, and a strategy to keep your costs under control.
0:23Here are the criteria. First, consistency. Does the model respect your reference sheets, shot after shot? Second, motion. Are bodies, hands, and objects physically believable? Third, faces. Some models refuse photorealistic faces as references. Fourth, sound. Some generate dialogue and ambiance, others don't. Fifth, duration and resolution limits. And sixth, cost and speed. Rank these for your film before you look at a single demo reel.
0:56Then, test. The same way every time. Take one representative shot with the same references and the same prompt and run it on two or three models. Put the results side by side and score each one on your criteria. Write the scores down. After a few films, that notebook will be worth more than any ranking you'll find online.
1:17Here's what a test can look like for the close -up that ends the photo. Model A keeps her face, but the tears look painted. Model B gets the emotion, but changes her scoff. Model C nails both, but costs twice as much. For the one close -up that carries the whole ending, Model C wins. For a simple establishing shot, it probably wouldn't be worth it.
1:42Here's what you'll find in Screenweaver at the time of this recording. Seedance 2 .5, the default, references, start and end frames, sound, and clips from 4 to 15 seconds, longer in some modes. Veo 3 .1, up to 4K and shorter clips. Cling 3 .0, in standard and pro versions, plus a motion control variant. Minimax H3, then Grok Imagine Video, both with sound always on, and Seedance 2 .0. My recommendation for narrative scenes today is Seedance 2 .5. But run your own test. That's the whole point of this lecture.
2:20Now the money strategy. Draft first, finish later. Seedance 2 .5 has a draft mode, at 480p, for quick and cheaper previews. You generate your takes as drafts, pick the winner, and then finish that one draft to 1080p. For even higher resolution, you can upscale a finished video with topaz, up to 4K. You pay full price only for the shots that made the cut.
2:49And check the limits before you plan. Some models cap the length of a clip, some only offer their highest resolution in short clips, and some always generate sound. Read the options of the video node before you write your shot list, not after.
3:06Next decision. One clip per shot, or one clip per scene. Some models, like Seedance 2 .5, can generate several shots in a single clip, with real cuts between them. The four shots of the photo were generated that way, as one continuous clip, so the light, the rain, and the actors stay identical across the cuts. Generating shot by shot gives you more control over each one, but more chances for things to drift between them. For short, intimate scenes, one clip per scene is often the safest choice.
3:43A practical rule, if a scene has only a few shots, one location, and the same characters throughout, try one clip for the whole scene first. If it has many shots, several locations, or complex action, generate shot by shot, or in small groups of shots.
4:00And think about sound before you click generate. When a model generates audio, it can deliver the dialogue and the ambience in the same take. In the photo, Thomas' line and the rain on the glass were generated with the picture. But if you plan to design the sound yourself, switch the audio off and you'll get a clean picture to build on. Decide shot by shot, and write it down in your shot list.
4:26One last tip. Match the model to the shot, not to the film. A dialogue scene, a wide establishing shot, and a fast action beat don't have the same needs. It's perfectly fine to use one model for most of your film, and a second one for the two shots where it struggles. Just keep your references and your art direction identical across both, so the audience never feels the switch.
4:51Your exercise, list your six criteria in order of importance for your film. Pick one representative shot, test it on three models with the same references and prompt, and score the results. Then decide your default model and your draft and finish strategy. In the next lecture, we'll write the prompt itself, the way a director briefs a crew.