The context of the video ad. Allowed values include: 0: In-stream unknown1: In-stream pre-roll2: In-stream mid-roll3: In-stream post-roll4: Out-stream
${VIDEO_PLAYBACK_METHOD}
How the video was played. Allowed values include: 0: Unknown1: Auto-play, sound-on2: Auto-play, sound-off3: Click-to-play4: Mouse-over5: Auto-play, sound unknown
${VIDEO_PLAYER_WIDTH}
The size of the video player, expressed as player width in pixels.
${VIDEO_PLAYER_HEIGHT}
The height of the video player, expressed in pixels.