Ghost(Pro) upload limit: 5 MB Starter, 100 MB Publisher

If your newsletter runs on Ghost(Pro), the plan decides whether you can upload a video at all: the limits page lists 5 MB for Free trial and Starter, 100 MB for Publisher, 250 MB for Business and 1 GB for Custom. A newsletter-to-video clip of a few seconds is the realistic fit on Publisher; on Starter, host the video elsewhere and link it.

The limits Ghost lists

Ghost's media file size page (read 2026-10-10) gives the per-plan upload cap and says there is no limit on the number of files. It does not list supported video formats on that page, so check the editor's video card before a big batch.

Cut the issue to the part that fits

Sume's video inspect can transcribe a clip and return sentence segments with timestamps, at $0.01 per audio minute, so you can pick the one section of an issue worth showing. Then video trim cuts a [start, end) range into a new MP4 for $0.02 per job. The duration is 0.2 to 900 seconds, audio can be kept or dropped, and an optional output object conforms width, height (256 to 2160) and fps for an exact cut.

Sume has no bitrate or file-size field, and the trim and timeline pages reject codec and crf fields, so file size tracks duration and pixel size. Shorter, smaller and silent are the three levers you have: cut fewer seconds, set a smaller output, or send audio as drop. Measure the downloaded file against the Ghost row for your plan; do not guess.

curl -X POST https://api.sume.com/v1/video-trim \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: ghost-teaser-001" \
  -d '{
    "video_url": "https://media.sume.com/artifacts/artf_demo/issue-recap.mp4",
    "start": 12,
    "duration": 10,
    "audio": "drop",
    "output": { "width": 1280, "height": 720, "fps": 24 }
  }'

A Q4 newsletter plan

Holiday issues often reuse last year's template, so keep one trim request and change only start and duration. Re-read Ghost's page before upgrading a plan for video, because the numbers are Ghost's and can change.

• Publisher: one 10-second silent teaser per issue, burned captions only if the text is needed.
• Starter: keep the video on your own hosting and embed or link it; do not try to squeeze under 5 MB.
• Business: a recap clip with sound, tested against 250 MB before the send.
• Captions: if you want text on the clip, standalone captions are $0.20 for videos up to 60 seconds.