Welcome to Clip from Spiral logo

Interactive video lesson plan for: Close-up Streaming Video

Activity overview:

Google Tech Talk (more info below)
May 17, 2011

Presented by Professor Bernd Girod, Stanford University Department of Electrical Engineering.


We review recent advances in the technology and applications of interactive region-of-interest (IRoI) video streaming, which allows each user to interactively control pan, tilt, and zoom during playback. This is familiar for high-resolution stills (say satellite imagery and maps), and not yet ubiquitous for video. A high-resolution video is available at the source, but either bandwidth or display size prohibits the streaming of the full video to a desktop computer, tablet, or smartphone. Solutions can be built in a standards compliant manner by breaking up the video into tiles at different resolution levels and simultaneously streaming multiple sub-videos that make up the overall display. Over-the-top delivery can use a client-server model or, for live multicast to large audiences, a P2P overlay. I will report our experiences with ClassX, an experimental IRoI video streaming platform for capturing lectures and seminars at Stanford University. In addition to IRoI, the system implements sophisticated video analysis techniques for automatic tracking of the lecturer and automatic synchronization of digital presentation slides, thus eliminating most human intervention for producing a compelling interactive viewing experience and reducing cost dramatically. ClassX works with Silverlight and Flash clients and now available as open source software at

Tagged under: google tech talk,interactive video

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

Share on:

Share Close-up Streaming Video on Google+ Share Close-up Streaming Video on Twitter Share Close-up Streaming Video on Facebook Pin Close-up Streaming Video Email Close-up Streaming Video

Ready to see what else Spiral logo can do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.


Carry out a quickfire formative assessment to see what the whole class is thinking


Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices


Turn any public video into a live chat with questions and quizzes

1000s of teachers use Spiral to deliver awesome, engaging activities that capture students' understanding during lessons.

Now it's your turn Sign up

Spiral Reviews by Teachers and Digital Learning Coaches

Review of Spiral by teacher: Kathryn Laster @kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Review of Spiral by teacher: Room 220 Math Stars @3rdgradeBCE

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

Review of Spiral by teacher: Miss Ord @ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

Review of Spiral by teacher: Adam J. Stryker @strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!

Review of Spiral by teacher: Dr Ayla Göl @iladylayla

A good tool for supporting active #learning.

Review of Spiral by teacher: Brett Erenberg @BrettErenberg

The Team Up app is unlike anything I have ever seen. You left NOTHING out! So impressed!

Get the Clip Chrome Extension & Create Video Lessons in Seconds

Add Clip to Chrome