YouTube - Postbreeze

Quick reference

Field	Value
Title limit	100 characters
Description limit	5,000 characters
Tags limit	500 chars total (sum of tags)
Videos per post	1
Video formats	MP4, MOV, WebM, MKV, FLV, AVI
Max file size	256 GB (or 12 hours, whichever is less)
Max duration	12 hours (verified accounts), 15 minutes otherwise
Shorts duration	up to 60 seconds
Shorts aspect ratio	9:16
Long-form aspect ratio	16:9 recommended
Post types	Video upload (Short or long-form, derived from duration + aspect)
First comment	✅ Posts as a Community comment after upload
COPPA disclosure	✅ Required (`madeForKids` boolean)

Before you start

YouTube requires every upload to declare madeForKids: true | false. The default in Postbreeze is false, but the choice matters — videos flagged Made For Kids have comments, notifications, and personalized ads disabled by YouTube. If you flag it wrong, you have to delete and re-upload. Always set this field explicitly so the decision is recorded in your code.

The connected YouTube channel must:

Have completed the OAuth flow.
Have a verified phone number (YouTube enforces this for any video > 15 minutes).
Have youtube.force-ssl scope granted (Postbreeze requests this by default — covers upload + first-comment).

Each upload counts as 1,600 quota units against the channel’s 10,000-unit daily quota. The first-comment call costs an additional 50 quota units. Postbreeze surfaces quota errors as YT_QUOTA_EXCEEDED. See Platform settings for the full platformOptions reference and Media uploads for the two ways to attach the video file (mediaItems URL ingest vs. pre-uploaded mediaIds).

Quick start

Workspace is inferred from your API key — no workspaceId argument. The flat shape (content + platforms) is canonical; pass YouTube’s madeForKids flag in platformOptions on every upload.

import Postbreeze from "@postbreeze/node";

const postbreeze = new Postbreeze({ apiKey: process.env.POSTBREEZE_API_KEY });

await postbreeze.posts.create({
  content: "60-second product demo",
  scheduledFor: new Date(Date.now() + 30_000).toISOString(),
  mediaItems: [
    { type: "video", url: "https://cdn.example.com/demo.mp4" },
  ],
  platforms: [
    {
      accountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "PUBLIC",
        madeForKids: false,
      },
    },
  ],
});

import os
from datetime import datetime, timedelta, timezone
import requests

API = "https://api.postbreeze.ai/api/v1"

res = requests.post(
    f"{API}/posts",
    headers={"Authorization": f"Bearer {os.environ['POSTBREEZE_API_KEY']}"},
    json={
        "content": "60-second product demo",
        "scheduledFor": (datetime.now(timezone.utc) + timedelta(seconds=30)).isoformat(),
        "mediaItems": [
            {"type": "video", "url": "https://cdn.example.com/demo.mp4"},
        ],
        "platforms": [
            {
                "accountId": "soc_youtube_…",
                "platformOptions": {
                    "platform": "YOUTUBE",
                    "visibility": "PUBLIC",
                    "madeForKids": False,
                },
            },
        ],
    },
)
res.raise_for_status()

curl -X POST https://api.postbreeze.ai/api/v1/posts \
  -H "Authorization: Bearer $POSTBREEZE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "60-second product demo",
    "scheduledFor": "2026-06-01T12:00:30Z",
    "mediaItems": [
      { "type": "video", "url": "https://cdn.example.com/demo.mp4" }
    ],
    "platforms": [
      {
        "accountId": "soc_youtube_…",
        "platformOptions": {
          "platform": "YOUTUBE",
          "visibility": "PUBLIC",
          "madeForKids": false
        }
      }
    ]
  }'

Content types

Long-form video

Any video over 3 minutes, or any video that is not 9:16. The post content becomes the YouTube description; youtubeTitle (if set) becomes the YouTube title. If you don’t pass youtubeTitle, the first line of content (≤ 100 chars) is used.

await postbreeze.posts.create({
  content: "Deep dive on our new dashboard.\n\nChapters, links, and resources below.",
  scheduledFor: "2026-06-10T15:00:00Z",
  mediaItems: [
    { type: "video", url: "https://cdn.example.com/dashboard-deep-dive.mp4" },
  ],
  platforms: [
    {
      accountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "PUBLIC",
        madeForKids: false,
        youtubeTitle: "Our new dashboard — deep dive (16 min)",
      },
    },
  ],
});

Short

A video ≤ 3 minutes in 9:16 aspect ratio. YouTube auto-classifies it as a Short on their end — you don’t pass a Shorts flag; just ensure the file matches Shorts requirements.

await postbreeze.posts.create({
  content: "How we ship on Fridays",
  scheduledFor: "2026-06-10T15:00:00Z",
  mediaItems: [
    { type: "video", url: "https://cdn.example.com/friday-ship.mp4" },
  ],
  platforms: [
    {
      accountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "PUBLIC",
        madeForKids: false,
      },
    },
  ],
});

Unlisted preview

Set visibility: "UNLISTED" to upload without making the video discoverable. Useful for sharing with reviewers before public launch.

await postbreeze.posts.create({
  content: "Reviewer preview — please don't share",
  scheduledFor: new Date(Date.now() + 30_000).toISOString(),
  mediaItems: [
    { type: "video", url: "https://cdn.example.com/preview.mp4" },
  ],
  platforms: [
    {
      accountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "UNLISTED",
        madeForKids: false,
      },
    },
  ],
});

Media requirements

Videos

Property	Requirement
Videos per post	1
Formats	MP4, MOV, WebM, MKV, FLV, AVI
Max file size	256 GB
Max duration	12 hours (verified accounts), 15 minutes (non-verified)
Shorts duration	up to 3 minutes
Shorts aspect ratio	9:16
Long-form aspect ratio	16:9 recommended
Codecs	H.264, VP9, AV1
Frame rate	24–60 fps
Audio codecs	AAC, MP3, Vorbis, Opus

YouTube targets accept a single video. Images, GIFs, and documents are rejected at validation. See Media uploads for the URL ingest vs. pre-upload trade-off.

Platform-specific fields

Field	Type	Required	Description
`platform`	`"YOUTUBE"`	Yes	Discriminator.
`visibility`	`"PUBLIC"` \| `"UNLISTED"` \| `"PRIVATE"`	No (default `PUBLIC`)	Honored by YouTube exactly as set.
`madeForKids`	boolean	No (default `false`)	COPPA disclosure. Disables comments + personalized ads when true. Set explicitly on every upload.
`youtubeTitle`	string	No	Override for the title (≤ 100 chars). Falls back to first line of `content`.

Full schema in Platform settings → YouTube.

First comment

YouTube exposes a commentThreads.insert endpoint that lets the channel owner post a top-level comment on a video they own. Postbreeze calls it after the upload completes — it costs 50 quota units, comes back with a commentId, and posts as the channel itself (not as a personal Google account).

await postbreeze.posts.create({
  content: "Our new dashboard in 60 seconds",
  scheduledFor: new Date(Date.now() + 30_000).toISOString(),
  mediaItems: [
    { type: "video", url: "https://cdn.example.com/demo.mp4" },
  ],
  platforms: [
    {
      accountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "PUBLIC",
        madeForKids: false,
      },
      firstComment: "Timestamps in the description ⬇️",
    },
  ],
});

If the video has comments disabled (e.g. madeForKids: true, or you’ve set channel-wide comments off), the first-comment call fails with YT_COMMENTS_DISABLED and the warning banner appears on the post. The main upload still succeeds.

Comment limit: 10,000 characters.

Analytics

Metric	Available
Views	✅
Watch time (minutes)	✅
Avg view duration	✅
Likes	✅
Dislikes	❌ (YouTube removed this from the public API)
Comments	✅
Subscribers gained from video	✅
Shares	✅
Click-through rate (impressions → views)	✅
Audience demographics	✅ (channel-level)

Refresh cadence: every 14 days. Per YouTube’s retention rule, raw MetricSnapshot rows are purged on disconnect or on platform 404 (video deleted, channel suspended).

Common errors

Error	Meaning	Fix
`YT_QUOTA_EXCEEDED`	Channel hit the 10,000-unit daily quota	Wait for the daily reset. The first-comment call is skipped if the upload alone burns most of the budget.
`YT_COMMENTS_DISABLED`	First-comment failed because the video doesn’t allow comments	Disable `madeForKids` for the video, or accept that first-comment is impossible on this content.
`YT_INVALID_VIDEO_FORMAT`	Container or codec YouTube doesn’t accept	Re-encode to H.264 + AAC.
`YT_MADE_FOR_KIDS_REQUIRED`	The COPPA disclosure was missing	Pass `madeForKids` explicitly.
`YT_UPLOAD_QUOTA_EXCEEDED`	More than the daily upload count for unverified accounts	Verify the channel’s phone number.
`YT_TITLE_TOO_LONG`	Title > 100 chars	Trim.
`YT_DESCRIPTION_TOO_LONG`	Description > 5,000 chars	Trim.
`YT_TOKEN_EXPIRED`	OAuth refresh failed	Reconnect.

What you can’t do

❌ Edit video metadata after upload (planned for v2)
❌ Schedule using YouTube Studio’s native scheduler (we run our own queue)
❌ Upload to a Brand Account other than the connected one
❌ Set a custom thumbnail via API (works only for long-form videos on verified channels and isn’t exposed in v1)
❌ Pass tags, override the category, or flag synthetic media — Postbreeze applies server-side defaults (category 22 — People & Blogs)
❌ Add to playlists at upload time
❌ Premieres or Live streams
❌ Community posts (text/poll/image posts) — only video uploads + first-comments
❌ Set end screens or cards

Full control: nested shape

The nested shape (caption + targets, socialAccountId per target) is the lower-level surface the flat shape compiles down to. Use it when you want a single payload that targets multiple platforms with distinct per-platform captions or media. The YouTube platformOptions are identical.

import Postbreeze from "@postbreeze/node";

const postbreeze = new Postbreeze({ apiKey: process.env.POSTBREEZE_API_KEY });

await postbreeze.posts.create({
  caption: "60-second product demo",
  scheduledAt: new Date(Date.now() + 30_000).toISOString(),
  mediaIds: ["med_video_…"],
  targets: [
    {
      socialAccountId: "soc_youtube_…",
      platformOptions: {
        platform: "YOUTUBE",
        visibility: "PUBLIC",
        madeForKids: false,
        youtubeTitle: "Our new dashboard in 60s",
      },
      firstComment: "Timestamps in the description ⬇️",
    },
  ],
});

​Quick reference

​Before you start

​Quick start

​Content types

​Long-form video

​Short

​Unlisted preview

​Media requirements

​Videos

​Platform-specific fields

​First comment

​Analytics

​Common errors

​What you can’t do

​Full control: nested shape

Quick reference

Before you start

Quick start

Content types

Long-form video

Short

Unlisted preview

Media requirements

Videos

Platform-specific fields

First comment

Analytics

Common errors

What you can’t do

Full control: nested shape