Mobile game ad cutdowns: one master to 6, 15, 30 and 60 seconds

Four app-install networks publish their video limits, and one master can serve all four if you cut it to length. Mintegral recommends 6, 15, 30 and 60 seconds, Unity allows 60 or less, AppLovin Axon allows up to 60, and Liftoff lists 180 for portrait. Sume's video trim does the cutting.

The limits side by side

A 60 second portrait cut is inside every one of these networks, and a 30 or 15 second cut is too.

The cutdown loop

Each trim job is its own call, with its own idempotency key, so use a key per length. The default precision is a frame-accurate re-encode, so each result is a new MP4 and the master is untouched. Four cuts cost $0.08 at the docs' rate.

The cut starts where you say. A 6 second version needs its own start, usually the strongest beat, so pass a different start per length instead of always 0.

import os
import requests

key = os.environ["SUME_API_KEY"]
cuts = {6: 12.0, 15: 8.0, 30: 0.0, 60: 0.0}
for seconds, start in cuts.items():
    resp = requests.post(
        "https://api.sume.com/v1/video-trim",
        headers={"Authorization": f"Bearer {key}", "Idempotency-Key": f"game-cut-{seconds}"},
        json={
            "video_url": "https://media.sume.com/artifacts/artf_demo/master.mp4",
            "start": start,
            "duration": seconds,
            "mode": "sync",
        },
        timeout=60,
    )
    resp.raise_for_status()
    print(seconds, resp.json())

Limits

If the master is shorter than start plus duration, the docs say the end clamps and the result warns trim_clamped_to_source, so a 60 second request on a 45 second master returns 45. Check duration_seconds.

None of these pages publishes a performance claim for a given length beyond Mintegral's remark that 60 seconds or under generally performs best. Treat the rest as test cells, not rules.