Which Sume video clips carry audio for the Shorts editor split
YouTube Shorts now separates audio and video tracks. Which Sume video models return sound, which can mute, and what a $0.01 detach adds.
The YouTube Shorts editor is reported to separate audio and video tracks (reported by HeyOrca, read 2026-10-07). Before you rely on that split for a generated clip, check whether the clip has a track to separate. On Sume that depends on the model.
Audio by model
Prices are Sume billable rates (provider list x 1.25, rounded up to the cent per job), read 2026-10-07.
| Model | Audio on the clip | Audio price line |
|---|---|---|
| Wan 3.0 | generate_audio, default true | none |
| MiniMax H3 and H3 Max | native stereo, always on | none |
| Gemini Omni Flash 1.1 | native, always on | none |
| Kling 3 | on or off | $0.14 off, $0.21 on per second |
| Grok Imagine Video 1.5 | silent | none |
Practical pick
Audio detach splits a clip that does have sound into a file you can edit separately. It costs $0.01 per job, needs a media.sume.com video and an Idempotency-Key, and writes wav by default (mp3 is 128 kbps). Detach on a silent Grok clip has nothing to extract, so plan for that case with the error post linked below.
A 10-second Kling 3 clip is $1.40 with audio off and $2.10 with audio on. For the other models the sound is in the price already.
- Need a clean split with separate music later: generate on H3 or Wan, detach for $0.01.
- Need silence from the start: Kling 3 with audio off, or Grok Imagine Video 1.5 for image-to-video.
- Not sure: read the live catalog before you pay.
Sources
Related posts
More in Models
- Which Sume video models accept an audio reference (audio_url)?
Seedance 2.x, Wan 3.0, MiniMax H3 and H3 Max take audio and video references on Sume. Gemini Omni Flash 1.1 and Recast do not. Rates and limits.
- Which Sume video models take an audio_url reference, which do not
Sume video rows list supported_input_references per model. The docs show seedance-2 with audio_url, H3 Max with audio, and Gemini Omni Flash 1.1 without it.
- YouTube Shorts max out at 1080p, so don't generate at 4K
YouTube's Shorts help page caps uploads at 1080p. Sume's Gemini Omni Flash 1.1 offers 360p to 4K in 9:16, so request resolution 1080p and skip the higher tier.
- An OpenRouter-compatible video API: sume/auto or a pinned model
Sume's POST /v1/videos follows OpenRouter's video generation API field for field. Let sume/auto pick the model, or pin a catalog id like seedance-2.5.
Written by Sume