TikTok Spark Ad (Boosted Post) ads are vertical 9:16 video clips, up to 600 seconds long, delivered as MP4 or MOV. They run in the For You Feed placement on TikTok. Encode with H.264 video with AAC audio for clean playback across devices. Use these requirements to brief designers, validate uploads, and avoid creative rejections in TikTok's ad manager.
| Aspect ratios | 9:16, 1:1, 16:9 |
|---|---|
| Orientation | portrait |
| File types | MP4, MOV |
| Max duration | 600 sec |
|---|---|
| Video codec | H.264 |
| Audio codec | AAC |
Boosts an organic TikTok post. Inherits the original post's specs and caption (max 2,200 chars). Renders in the For You feed, so TikTok's standard safe-zone template applies for 9:16 creative: ~130px (7%) top icon area, ~480px (25%) bottom for caption/handle/music, and ~140px (12%) right for the icon rail.
Official source: https://ads.tiktok.com/help/article/spark-ads