Captions, Trickplay, and Advertising Metaboxes
These metaboxes appear on video posts when Enable Legacy Controls (Legacy Controls section on General Settings) and the specific Meta Controls sub-options are on. See General Settings → Legacy Controls.
Closed Captions / Subtitles
Metabox: Closed Captions/Subtitles
Add repeatable caption tracks:
| Field | Description |
|---|---|
| File URI | URL to .vtt (WebVTT) or .srt file. WebVTT works on Roku and HTML5; SRT is Roku-only. |
| Language | BCP 47 language code (e.g. en, es). |
| Type | CLOSED_CAPTION or SUBTITLE |
Convert SRT to VTT with online tools if needed for cross-platform support.
Trickplay (deprecated)
Metabox: Trickplay — Deprecated in 3.0.0
BIF trickplay files enable scrub preview thumbnails on Roku:
| Field | Description |
|---|---|
| BIF file URI | URL to .bif file |
| BIF definition | HD or FHD resolution |
Avoid new BIF workflows unless maintaining legacy Roku channels.
Advanced Controls
Metabox: Advanced Controls
| Field | Description |
|---|---|
| Validity start date | Content available from this date |
| Validity end date | Content expires after this date |
Useful for licensed content windows and live-event replays.
Advertising Controls
Metabox: Advertising Controls (not shown on Series posts)
Configure per-video ad breaks when feed ad type is Scheduled or Scheduled w/ Automatic Fallback (from prior configuration or JSON import).
| Field | Description |
|---|---|
| Ad breaks | Repeatable cue points (time offsets) |
| Custom mid-roll timer | Override default mid-roll interval for automatic modes |
Enabling these metaboxes
- General Settings → Enable Legacy Controls — on
- Enable the specific control: Subtitles, Trickplay, Advanced, or Advertising