Ubiquitous Video Conferencing Faculty Advisors: Dr. Helen Boussalis Dr. Charles Liu Dr. Darrell Guillaume Dr. Chivey Wu Dr. Khosrow Rad Student Assistants: Sergio Mendoza Jorge Estrada JohnPaul Adigwu Adrienne Lam Neil Arellano Evan Tsai Gabriel Nuñez Aleksander Milshteyn Sergio Beltran 6/19/2015NASA Grant URC NCC NNX08BA44A1

Ubiquitous Video Conferencing 2NASA Grant URC NCC NNX08BA44A6/19/2015 Semantic Network Ubiquitous Video Conferencing Technology Active Directory

Purpose of Ubiquitous Video Conferencing 6/19/20153NASA Grant URC NCC NNX08BA44A Interaction that goes beyond desktop environment in everyday life Visual and Audio collaboration in real time between two or more locations

Scalability Clients on a distributed server network. 6/19/20154NASA Grant URC NCC NNX08BA44A

UVC Streaming Server User 1 User 2 User 4 6/19/20155NASA Grant URC NCC NNX08BA44A Header Data Client 1Client 2 Client 3Client 4 Header Data Header Data User 3 Header Data Server (Multipoint Connection) Client 2 Client 3Client 4 Server (Multipoint Connection) Client 1

UVC User Interface 6/19/2015NASA Grant URC NCC NNX08BA44A6

Bandwidth Considerations Bandwidth measurements exhibit degree of variability Reserve at least 20% of Client’s bandwidth for other simultaneous applications during videoconferencing - , Internet browsing, Misc. downloading Upload speed varies from download speed on different networks User Adjustments for Bandwidth and Memory Control: 1) Change Webcam Output Resolution 2) Incoming Video Window Resizing 3) Do not use video. Use audio/chat instead. 6/19/20157NASA Grant URC NCC NNX08BA44A

Memory Tests using MPEG-2 and Dell T3500s 6/19/2015NASA Grant URC NCC NNX08BA44A 8 Number of Simultaneous Video Streams RAM (MB) Exp. 1 RAM (MB) Exp. 2 RAM (MB) Exp. 3 Average RAM (MB)

Bandwidth Experiment # Mbps Network 6/19/2015NASA Grant URC NCC NNX08BA44A9 FPS Network Utilization (Mbps)

Bandwidth Experiment # 2 – 25 fps 6/19/2015NASA Grant URC NCC NNX08BA44A10 Number of Video Stream Pairs Network Utilization Exp. 1 (Mbps) Network Utilization Exp. 2 (Mbps) Network Utilization Exp.3 (Mbps) Average Network Utilization (Mbps)

Average Network Utilization versus Number of Parallel Video Streams 6/19/2015NASA Grant URC NCC NNX08BA44A11

Bandwidth Experiment # 3 – Audio Only 6/19/2015NASA Grant URC NCC NNX08BA44A12 Number of Audio Streams Network Utilization Exp. 1 (Mbps) Network Utilization Exp. 2 (Mbps) Network Utilization Exp. 3 (Mbps) Average Network Utilization (Mbps)

Bandwidth Experiment # 4 – Audio with Video 6/19/2015NASA Grant URC NCC NNX08BA44A13 Number of Audio/Vide o Streams Network Utilization Exp. 1 (Mbps) Network Utilization Exp. 2 (Mbps) Network Utilization Exp.3 (Mbps) Average Network Utilization (Mbps)

UVC Status Key Goals Phonon/Qt Multimedia compatibility // Complete Successfully record/play an analog signal using Phonon // Complete Successfully open files // Complete Transmit /Receive audio/video stand alone streams // Complete Successfully transmit/receive parallel audio/video streams // Complete Negate/minimize streaming problems // In Progress Integration of UVC to network // In Progress 146/19/2015NASA Grant URC NCC NNX08BA44A

UVC Technology Integration 6/19/2015NASA Grant URC NCC NNX08BA44A15

Any Questions? 6/19/2015NASA Grant URC NCC NNX08BA44A16