interpolate special substrings in POST to HTTP endpoint: "/show-toast"
summary:
* "{{video-uri}}"
- video URI
- ex: "http://example.com/video.mp4"
* "{{video-caption}}"
- caption URI
- ex: "http://example.com/video.srt"
* "{{video-req-headers}}"
- video HTTP headers
- ex: "Referer: http://example.com/videos.html
Origin: http://example.com
User-Agent: Chrome/90"
* "{{video-drm-scheme}}"
- DRM scheme
- ex: "widevine"
* "{{video-drm-server}}"
- DRM license server URL
- ex: "http://widevine.example.com/"
* "{{video-drm-headers}}"
- DRM HTTP headers
- ex: "Authorization: Bearer <TOKEN>
Cookie: token=<TOKEN>
User-Agent: Chrome/90"
