Koningsplein webcam, Amsterdam

TERENA (Trans-European Research and Education Networking Association) coordinates and carries out technical activities and provides a platform for discussion to encourage the development of a high-quality computer networking infrastructure for the European research and education community.

Location

The camera is mounted on the outside of our office, on the 4th floor. The office is in central Amsterdam above the Singel canal and the busy junction between the flower market (off-screen right) the roads that run between the shops, hotels, cinemas and restaurants at Leidseplein (bottom right corner) and the popular shopping areas of Spui (top left) and Kalverstraat (top centre). Check the Contact page for details and a photo of the office building. To be specific, the camera is located below the turret, a little to the right.

The webcam is undergoing maintenance and we hope to get it back online soon. Unfortunately it is not possible to estimate when this will be.

Technical details

Camera

The physical camera is an Axis Q1755 surveillance camera. This model is able to deliver up to 1080i H.264 compressed RTSP streams. The camera has an onboard microphone, but we still use the external microphones we used in the past because they seem to offer better quality. You can hear the sounds of the street, the trams, people talking, etc. The camera is a fixed model, which means that there is only one viewing angle possible. It is not possible to move the camera.

Server software

The streaming media server is running Wowza Media Server 3.5, and relays the RTSP stream from the Axis.

Infrastructure

The server is a VMware ESXi 4.1 VM running Ubuntu 12.04.1, configured with 2 GB of RAM and 4 vCPUs.

Network set-up

The VM is connected to our SURFnet6 internet connection, which provides IPv4 and IPv6 connectivity to the internet at 1 Gbit/s. Since 2002 our entire network is running dual stack, which means that all our services are offered via IPv4 and IPv6. The streaming server is no exception. Visitors with IPv6 connectivity automatically watch the web cam via IPv6.

FAQ

The video keeps hicking up, especially during daytime. This might be caused by your internet connection. The stream is around 500 Kbps at night (when there is less information in the dark picture), but during daytime it can go up to 4 Mbps. If your connection is 4 Mbps or slower your might experience hickups. We do plan to offer a lower quality version of the stream in the future.

The sound is mono. The current set-up does not support stereo sound.

The image is too far zoomed in/out. There is no "best" zoom level for everyone. Live with it.

Feedback

Please send any comments to the webcam admins.