Audio Visual Design Guidelines

Playback Methods

95 views November 22, 2018 aetm 0

Video content playback covers the file data delivery, decoding, and playback aspect of a lecture capture system.

Playback of recorded video content depends largely on the content management method, and ICT architecture and guidelines regarding the distribution of digital video assets. A user-managed distribution method may mean that video files are emailed to recipients to view on their personal devices. A video content management system may allow users to playback videos from a large library via a web-browser interface.

Hardware Appliance

A media player device capable of decoding and playback of digital video files and content. A lecture capture hardware appliance is commonly also capable of playback of recorded content.

Hardware appliance common features:

  • Digital video output port (HDMI, DVI, DisplayPort)
  • Line level output
  • Ethernet port (streaming, upload to shared network file system or ftp, third party control)
  • Storage (onboard hard drive, shared network file system, SD card, or USB storage media)
  • Limited video codec compatibility

Video Playback Software

The digital video files may be played directly from a file system and operating system of a computer device. Video playback software is used to open and decode the video file for playback on the user’s computer.

Video playback software considerations:

  • Video files may be stored on the user’s computer or USB storage media
  • Low impact to ICT architecture and network traffic
  • Playback of video files does not require network connection (once transferred to user’s computer)
  • Flexibility to use software for decoding and playback of any video codec
  • User access, and intellectual property controls may be difficult to enforce

Video Delivery via Content Management System

The Video Content Management System is accessed via web-browser interface. Playback of recorded video content is achieved in-browser by using standard HTTP communication. Recorded video content is accessed through a web-browser connecting over LAN, WAN, or internet.

Content Management System common features:

  • May be referred to as “Corporate YouTube” or “Private YouTube”.
  • Many content management solutions have adopted features that are commonplace for video sharing websites
  • Commonly accessed via user’s PC, or mobile device
  • Commonly accessed via web-browser application, although some content management solutions may feature an application for viewing video content
  • May integrate live-streaming capability via Content Delivery Network (CDN)
  • May feature playback of multi-stream recording sessions whereby the user may select from multiple video streams during playback
  • May include webinar instructor-student interactivity
  • May include Unified Communications features
  • User accounts
    • Admin may set video access controls per video per user
    • Viewing history
    • Preferences
    • Notifications
    • Comments
  • Consistent user experience for all users
  • Ubiquitous intellectual property controls may be deployed (ie video playback must be in-browser)

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