Enabled to store time_end_at for a video w/ the result only
Enabled to store time_end_at for a video w/ the result only

* Output example: https://stat.ink/u/hirok_dev/1129255
* Enabled to consider the video epoch time, even if the video does not call
  the on_game_finish event.

hasegaw/IkaLog,deathmetalland/IkaLog,hasegaw/IkaLog,deathmetalland/IkaLog,deathmetalland/IkaLog,hasegaw/IkaLog