"Vibby is a new service for breaking YouTube videos into segments and inserting comments into those segments. To segment a YouTube video on Vibby simply grab the URL for the video and paste into the Vibby editor. Once inserted into Vibby you can highlight a segment on the video timeline. Vibby then play only the sections you've highlighted. Click on a highlighted section to add a comment to it. Videos edited through Vibby can be shared via email, social media, or embedded into a blog or website."
VideoNot.es has got to be one of the most widely applicable tools in educational technology I've seen in a very long time. The video revolution has transformed the amount of online video used in instruction and this tool is a fine way to improve how students are using video to support their learning. It enables a user to create time-stamped notes along side a video while the video is playing on screen. The notes are archived in one's Google Drive (and can be shared like any other Drive file). Students may return to the notes, click on any time stamped line to interact with the notes and replay any segment of the video to re-learn or clarify the content.