Timeline

Overlay a logo across scenes

Clips drawn over the WHOLE video however it is cut, so a watermark spans every scene without being repeated in each one.

Shown on A watermark over two scenes

Before · the same request without it
After · rendered from the request below

The entry

Put it on the clip itself, beside its asset.

{
  "asset": {
    "type": "image",
    "src": "https://cdn.rendobar.com/compose/showcase/media/logo.png"
  },
  "transform": {
    "scale": 0.18,
    "position": {
      "x": "85%",
      "y": "15%"
    }
  }
}

Every setting and default is in the docs

Run it

The whole request behind the render above. Paste it as it is, or swap the file for your own.

job.ts
import { createClient, outputUrl } from "@rendobar/sdk";


const rb = createClient({ apiKey: process.env.RENDOBAR_API_KEY });


const job = await rb.jobs.run({
  type: "compose",
  params: {
    schemaVersion: 1,
    output: {
      format: "mp4",
      resolution: {
        width: 960,
        height: 540
      }
    },
    timeline: {
      scenes: [
        {
          duration: 3,
          clips: [
            {
              asset: {
                type: "video",
                src: "https://cdn.rendobar.com/compose/showcase/media/coast-a.mp4"
              },
              start: 0
            }
          ]
        },
        {
          duration: 3,
          transition: {
            transition: "crossfade",
            duration: 0.6
          },
          clips: [
            {
              asset: {
                type: "video",
                src: "https://cdn.rendobar.com/compose/showcase/media/coast-b.mp4"
              }
            }
          ]
        }
      ],
      overlays: [
        {
          asset: {
            type: "image",
            src: "https://cdn.rendobar.com/compose/showcase/media/logo.png"
          },
          transform: {
            scale: 0.18,
            position: {
              x: "85%",
              y: "15%"
            }
          }
        }
      ]
    }
  },
});


console.log(outputUrl(job));

Install with npm i @rendobar/sdk. jobs.run() submits and waits, so it returns the finished job in one call.

terminal
curl https://api.rendobar.com/jobs \
  -H "Authorization: Bearer $RENDOBAR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type":"compose","params":{"schemaVersion":1,"output":{"format":"mp4","resolution":{"width":960,"height":540}},"timeline":{"scenes":[{"duration":3,"clips":[{"asset":{"type":"video","src":"https://cdn.rendobar.com/compose/showcase/media/coast-a.mp4"},"start":0}]},{"duration":3,"transition":{"transition":"crossfade","duration":0.6},"clips":[{"asset":{"type":"video","src":"https://cdn.rendobar.com/compose/showcase/media/coast-b.mp4"}}]}],"overlays":[{"asset":{"type":"image","src":"https://cdn.rendobar.com/compose/showcase/media/logo.png"},"transform":{"scale":0.18,"position":{"x":"85%","y":"15%"}}}]}}}'

Returns immediately with a job id. Poll GET /jobs/{id} or register a webhook rather than blocking on the request.

Questions

What does the overlays effect do in compose?

Clips drawn over the WHOLE video however it is cut, so a watermark spans every scene without being repeated in each one.

How do I add overlays to a video with an API?

Send a compose job to the Rendobar API with this entry in the timeline: {"asset":{"type":"image","src":"https://cdn.rendobar.com/compose/showcase/media/logo.png"},"transform":{"scale":0.18,"position":{"x":"85%","y":"15%"}}}. Put it on the clip itself, beside its asset. The request on this page is complete and renders as shown.

Footage and sound

More features

Scenes Sequential segments instead of tracks. Each scene holds its own clips and an optional transition into it, which is the shape most edits actually have. Composition A whole timeline used as one clip, so a group of layers moves, scales and fades together instead of one at a time. Background The colour behind every clip, wherever nothing else is drawn. Here a wide shot in a tall box leaves bars, and the background decides what colour they are. Color A warm cinematic grade: the light pulled towards gold, contrast and color lifted a little, skin left believable. LUT A film grade from a LUT file: shadows toward teal, skin and highlights toward orange, the look a colourist hands over as a .cube. Looks The whole archive look in one word: sepia, grain, dust, scratches, projector flicker and a vignette together.

See all 117 features →