Start (parameter: play)

The play action marks the start or continuation of playback.

When to send

When the media starts automatically.
When the user clicks Play.
When playback resumes after a pause.

Rules & Pitfalls

No other events are tracked until a play action has been sent.
With the first play, always send the total length (mt2/clip_length) and, if applicable, media categories (mg1, mg2, …).

Note
If no init action has been sent before, the first play automatically initializes a new media session.

Session behavior

Same media_id + subsequent play ⇒ the existing session continues.
A new init action closes the previous session and starts a new one.

Example request

Browser

Server-to-Server

wt_sendinfo_media(
  "video_16889",          // media_id
  "play",                 // player_action
  "0",                    // mt1 / clip_position
  "600",                  // mt2 / clip_length
  "",                     // media_parameter
  "64000",                // bandwidth
  "100",                  // volume
  "0"                     // mute
);

http://track.wt-eu02.net/111111111111111/wt?p=414,st&mi=video_16889&mk=play&mt1=0&mt2=600&mg1=sports&mg2=language_EN&bw=64000&vol=100&mut=0&x=1253786695416