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The Secrets of Scalable Video Coding

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Video communication promises new ways of interaction between people, but for this service to get to the masses, it is required to adopt ways of dealing with network impairments. The H.264/SVC codec …

Video communication promises new ways of interaction between people, but for this service to get to the masses, it is required to adopt ways of dealing with network impairments. The H.264/SVC codec provide these means. This presentation, explains the concepts behind SVC.

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  • 1. The Secrets of Scalable Video Coding
    Amit Klir
    System Architect
  • 2. Agenda
    SVC in a Nutshell
    RADVISION Scalable Video Engine 
    QoE Over Unmanaged Networks   
  • 3. SVC in a Nutshell
    Scalable Video Coding Demystified
  • 4. Scalable Video Coding – The Promise
    “One ring to rule them all”The Lord of the Rings, J.R.R Tolkein
    Generate a single video stream that can serve multiple users
  • 5. Scalability of Video - Modalities
    Temporal - Change of frame rate (e.g 30 FPS, 15 FPS)
    Spatial - Change of resolution (e.g720p, 480p, CIF)
    Fidelity / SNR - Change of quality (e.g1 Mbps, 512 kbps)
  • 6. Video Layered Structure
    Single Layer (e.g 4CIF@30 FPS)
    H.264
    Enhancement Layer (e.g 4CIF@30 FPS)
    SVC
    Enhancement Layer (e.g CIF@30 FPS)
    Base Layer (e.g qCIF@15 FPS)
  • 7. Layer Thinning
    The process of removing video layers done by a Media Aware Network Element (MANE)
    Enhancement Layer(4CIF@30 FPS)
    MANE
    Enhancement Layer (CIF@30 FPS)
    Enhancement Layer (CIF@30 FPS)
    Base Layer (qCIF@15 FPS)
    Base Layer (qCIF@15 FPS)
  • 8. The Hidden Promise of SVC
    The layered structure of SVC introduces higher error resilience
    The layered structure of SVC allows Unequal Error Protection (UEP)
  • 9. SVC is Not Just a Single Cake
    SVC
    Signaling
    Transport
    Unequal Error Protection
  • 10. RADVISION Scalable Video Engine
    Complete Video Solution at Your Hand
  • 11. Radvision Scalable Video Engine
    SVC
    Signaling
    IIE
    H.264 SVC
    Encoder
    Bandwidth Estimation
    H.264 SVCDecoder
    SVC RTP Payload Format
    IETF Draft 16
    UEP
    FEC Add-On
    Retransmission Add-On
    RS
    RFC5109
    DST
    SRC
    TX
    RX
    NetworkAdaptation
    Media Control Add-On
    AJB
    RTCP-FB
    RTCP-XR
    Transport
    RTP / RTCP Session API
    FW/NATTraversal
    UDP
    TCP
    HTTP(S) Tunneling
    Common Core
  • 12. QoE Over Unmanaged Networks
    Demonstrating the power of SVC
  • 13.
  • 14. Thank You
    Amit Klir
    System Architect

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