Monitor network bandwidth in real-time. Predictive algorithm for best media over any network or device


Opus is a lossy audio coding format developed by the IETF (Internet Engineering Task Force) for real-time Internet applications.  Opus adjusts seamlessly between narrowband and wideband bitrates, and it has algorithmic delay as low as 5 ms to support interactive conversation and other low latency communications.  Despite its low algorithmic delay, Opus fidelity compares favourably to popular music audio formats, e.g. AAC, MP3, which have algorithmic delay greater than 100 ms.


H.264 is a video compression standard is widely used for recording, compressing, and distributing video content. H.264 provides significant compression by:

Inter-frame Encoding

Inter-frame Encoding

Inter-frame motion estimation, to optimize temporal redundancies.

Intra-frame Encoding

Intra-frame Encoding

Intra-frame prediction, to optimize spatial redundancies.

Entropy Encoding

Entropy Encoding

Entropy encoding, to compress frequently occurring patterns into a smaller number of bits.

H.264 SVC

SVC (Scalable Video Coding) enables the encoding of a high-quality H.264 bitstream that also contains one or more subset bitstreams, including a “base layer” bitstream that can be decoded by an H.264 decoder that does not support SVC. A subset H.264 bitstream is created by dropping packets from a larger H.264 bitstream to reduce the bandwidth required for the subset bitstream. The subset bitstream can represent a smaller picture, lower frame rate, or lower image quality compared to the bitstream it is derived from.

Combined Scalable Video Coding

With AnyConnect you can combine temporal. spatial, and quality compression as best suited for your application or device. SVC is an important feature for Internet video applications, which support a wide range of connection qualities, and devices ranging from mobile phones with small screens and low processing power to PCs with high-definition displays and high processing power.

Related products


  • IETF: RFC 6716 – Opus Audio Codec
  • ITU-T: H.264 – MPEG-4 AVC
  • ITU-T: H.264 SVC – H.264/MPEG-4 AVC Annex G

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Apps, devices, and things using AnyConnect software