wiki:Other/Summer/2015/hVideo

Version 7 (modified by kushoza94, 9 years ago) ( diff )

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Dynamic Video Encoding

Table of Contents

  1. 2015 Winlab Summer Internship
    1. Projects
    1. Indoor Localization
    2. Introduction
      1. Motivation
      2. What is ORBIT Lab?
      3. Overall Approach
      4. Resources
      5. Procedure
      6. Plan of Action
      7. Weekly Presentations
      8. Team
    1. SDR in ORBIT: Spectrum Sensing
      1. Introduction
      2. Team
      3. Objectives
      4. Weekly Progress
      5. Experiments
    1. LTE Unlicensed (LTE-U)
      1. Introduction
      2. Objectives
      3. Theory
      4. Analyzing Tools
      5. Experiment 1: Transmit and Receive LTE Signal
      6. Experiment 2: The Waterfall Plot
      7. Experiment 3: eNB and UE GUI
      8. Experiment 4: Varying Bandwidths
      9. Experiment 5: Working with TDD or FDD
      10. Experiment 6: TDD with Varying Bandwidths
      11. Experiment 7: TDD Waterfall Plot
      12. Poster
      13. Members
      14. Materials
      15. Resources
    1. Distributed Simulation of Power Grid
      1. Introduction
      2. Objectives
      3. People
      4. Resources
    1. Context-Aware IoT Application on MobilityFirst
      1. Introduction
      2. Objectives
      3. System Architecture
      4. Network Diagram
      5. Experiment Tools
      6. Results
      7. Future Work
      8. Team member
    1. Real-Time Cyber Physical Systems Application on MobilityFirst
      1. Github Repo
      2. Introduction
      3. Preliminary Goal
      4. Outline of the Project
      5. Tasks
      6. Image Processing
      7. Weekly Summary
      8. Team
      9. Presentation Slides
    1. GNRS Assited Inter Domain Routing
      1. Introduction
    1. GNRS Management
      1. Introduction
      2. Work Milestones
    1. Effective Password Cracking Using GPU
      1. Introduction
      2. Objectives
      3. GPU
      4. Experiment
      5. Tools and Resources
  11. Body Sensor Networks
    1. Introduction
    2. Project Overview
    3. Data Collection
      1. Initial BCI data
    4. Data Analysis
    5. Tools/ Resources
    1. Unity Traffic Simulation
      1. Introduction
      2. Objectives
      3. People
    1. Mobile Security
      1. Introduction
      2. Motivation
    2. Resources
    1. Dynamic Video Encoding
      1. Introduction
      2. What We've Accomplished So Far
      3. Goals
      4. Background Information
      5. People

Introduction

Live-streaming video from a device to the Internet in an efficient manner can be a tricky task. The concept of video-streaming itself is simple; the device records whatever is going on and then streams the video file information live to a video-hosting website. The problem arises with the nature of internet/data/WiFi connections. Having an unstable connection will result in a low, partially corrupted, and blurry video file on the streaming server. The original video file can always be uploaded later on to wherever the video was streamed to, but just simply re-uploading the same video file is a waste of bandwidth and time. Bits and pieces of the video file were already sent to the streaming server during the live-streaming process; why not use the information previously sent to figure out and upload whatever is missing? That's the goal and name of our project: Dynamic Video Encoding.

What We've Accomplished So Far

-Attempt ORBIT tutorials.
-Establish WiFi connectivity between two nodes in the ORBIT network.
-Simulate video corruption using a network emulator (netem) by transmitting videos from one node to another with varying degrees of packet loss.
-Establish a working knowledge of Ruby.

Goals

-Automation of bash script procedures via Ruby scripts.
-Dynamic adaptive streaming over HTTP (DASH).

Background Information

-Anatomy of a Video File:

  1. Container

Defined by file extension
Holds various audio/video streams
Specifies contained encoding scheme
Encoding scheme defines algorithm(s) used to encode/decode video

  1. Content stream

Contains encoded audio/video streams
Limits video use to only specific codecs

What is a CODEC?
Encoder-Decoder
Algorithms defined in compression standard
Can sometimes encode/decode several compression algorithms
Popular compression algorithms include JPEG/MPEG family

People

Professor Anand Sarwate
Professor Roy Yates
Danny Ayoub
Kush Oza

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