A possible concise summary is:
The video is a birthday message from Markiplier, a popular gaming YouTuber, to his fans. He reflects on his journey from his old channel to his current one, and shows some of his old videos and statistics. He thanks his fans for their support and shares his passion for entertaining and improving himself. He asks his fans to find and share their favorite video of his, and to remember why they subscribed to him. He ends with his signature farewell and music.
Some possible key facts extracted from the text are:
- The text is a transcript of a video by Markiplier, a YouTube gaming commentator, posted on his birthday in 2017.
- The video is about Markiplier looking back at his old channel and videos from five years ago, when he started his YouTube career.
- The video shows Markiplier's progress, challenges, emotions, and goals as a YouTuber over the years.
- The video also contains some advice and encouragement for aspiring YouTubers and a request for his fans to share their favorite videos of his.