Caption Music Burner
Under maintenancePricing
Pay per usage
Go to Apify Store
Caption Music Burner
Under maintenanceBurns SRT/ASS captions into MP4 and mixes background music. Supports Hormozi-style ASS captions with DejaVu Sans, yellow color, anti-crash animation.
Pricing
Pay per usage
Rating
0.0
(0)
Developer
gg
Maintained by CommunityActor stats
0
Bookmarked
4
Total users
4
Monthly active users
14 days ago
Last modified
Categories
Share
Burns SRT or ASS subtitle captions into an MP4 video and optionally mixes background music.
Features
- Accepts raw SRT or ASS caption content as a string input
- Auto-detects ASS format (Hormozi-style animated captions supported)
- Burns captions with ffmpeg using DejaVu Sans font
- Optionally downloads and mixes background music at configurable volume
- Outputs the final MP4 to a Key-Value store as
output.mp4
Input
| Field | Type | Required | Description |
|---|---|---|---|
videoUrl | string | ✅ | Direct URL to the input MP4 video |
srtContent | string | ✅ | SRT or ASS subtitle content |
musicUrl | string | ❌ | Optional URL to background music MP3 |
musicVolume | number | ❌ | Music volume 0–1 (default: 0.2) |
fontSize | integer | ❌ | Caption font size in px (default: 28, SRT only) |
Output
The final video is saved as output.mp4 in the run's default Key-Value store.
Dataset output includes status, captionsAdded, musicAdded, sizeBytes, and kvStoreId.
Notes
- ASS captions bypass the
fontSizesetting and use embedded ASS styles - Music is looped to match video duration and mixed at the specified volume
- Built for vertical 9:16 short-form content (TikTok, Reels, Shorts)
