Change video frame rate

“Projector” (a film collaboration tool like Frame.io) receives footage shot at 60fps but needs 24fps for cinematic delivery and 30fps for web.

API

ittybit video \
  -i https://projector-app.com/footage/scene-4.mov \
  --fps 24 \
  --format mp4 \
  --cloud
const task = {
  input: "https://projector-app.com/footage/scene-4.mov",
  kind: "video",
  options: {
    fps: 24,
    format: "mp4",
  },
};

const res = await fetch("https://api.ittybit.com/tasks", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.ITTYBIT_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify(task),
});
const data = await res.json();
import requests

task = {
    "input": "https://projector-app.com/footage/scene-4.mov",
    "kind": "video",
    "options": {
        "fps": 24,
        "format": "mp4",
    },
}

res = requests.post(
    "https://api.ittybit.com/tasks",
    headers={"Authorization": f"Bearer {api_key}"},
    json=task,
)
data = res.json()
TASK='{
  "input": "https://projector-app.com/footage/scene-4.mov",
  "kind": "video",
  "options": {
    "fps": 24,
    "format": "mp4"
  }
}'

curl -X POST https://api.ittybit.com/tasks \
  -H "Authorization: Bearer $ITTYBIT_API_KEY" \
  -H "Content-Type: application/json" \
  -d "$TASK"

CLI

ittybit video \
  -i scene-4.mov \
  -o scene-4-24fps.mp4 \
  --fps 24

ittybit video \
  -i scene-4.mov \
  -o scene-4-30fps.mp4 \
  --fps 30

Common frame rates

FPSUse case
24Film, cinematic look
25PAL broadcast
30Web, general purpose
60Gaming, sports, smooth motion

Reduce frame rate to save bandwidth

A 60fps video at 30fps is roughly 30-40% smaller. For content that doesn’t need high frame rates (talking heads, slides):

ittybit video \
  -i webinar.mov \
  -o webinar.mp4 \
  --fps 30 \
  --quality medium

Low frame rate for previews

For hover-preview thumbnails, 15fps is enough and dramatically smaller:

ittybit video \
  -i clip.mp4 \
  -o preview.mp4 \
  --fps 15 \
  --width 320 \
  --quality very_low