Advanced annotations in Youtube. How is this done?

See this clip, around the 1.01 mark.
http://www.youtube.com/user/movieclips?ob=0

See how there are links to other videos inside the video. Is this done via the usual "in embed" annotations, that anyone can do, or is it done through some special service that this very popular YT channel has access to? Is it done through the API or is it done manually?

I would like to know how one could go about to:
1. Specify other videos to watch in the same way
2. Have the videos chosen from the same category in my channel.

I know this is a pretty complicated question. But I am certain there is some geek out there that knows how this works.

So looks like the images of the other videos are part of this video. Which lead me to the question about how to bulk annotate videos. And a quick google search led me to this very forum. I love this site http://www.blackhatworld.com/blackhat-seo/youtube/160367-bulk-youtube-annotations.html

They look like simple annotations. Just the video creator do the timing pretty well and they look like part from the video (the posters).

Yes, it is possible to link to other videos via annotations.
When you add an annotation like Speech bubble or note. You will find a link (checkbox) at the bottom. You can use it to add annotations which links to other video or channel. I donno if there is a software tat can do this, if you find any software let me know buddy

Looks like autoannotate is currently non functional. In touch with someone else now to maybe have this thing custom built.

cooldude2020 said:

Yes, it is possible to link to other videos via annotations.
When you add an annotation like Speech bubble or note. You will find a link (checkbox) at the bottom. You can use it to add annotations which links to other video or channel. I donno if there is a software tat can do this, if you find any software let me know buddy

Click to expand...

ThreadKiller said:

Looks like autoannotate is currently non functional. In touch with someone else now to maybe have this thing custom built.

Click to expand...

Awesome! Maybe once when its done, you can give me a review copy