Twitch Stream Display — Mirror-C ads are vertical 4:15 still images, measured at 160×600 px, up to 0.05 MB per file, delivered as JPG or PNG. They run in the Desktop Live Stream placement on Twitch. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Twitch's ad manager.
| Dimensions | 160 × 600 px |
|---|---|
| Aspect ratios | 4:15 |
| Orientation | portrait |
| Max file size | 0.05 MB |
| File types | JPG, PNG |
Twitch Stream Display Ads (SDA) — Mirror-C. Advertiser provides/traffics a 160×600 display creative (JPG/PNG, ≤50 KB) which Amazon's creative resizing tool upscales to the 300×1050 Mirror-C experience, auto-applying top and bottom bands (~84 px) based on the creative's hex color. No borders. Keep the top/bottom of the 160×600 creative one consistent color for a seamless band. ADSP managed-service buying only. Site-served.
Official source: https://advertising.amazon.com/resources/ad-specs/twitch/stream-display-ads