Advances in the scalable amendment of H.264/AVC

A Tutorial on H.264/SVC Scalable Video Coding and its Tradeoff between Quality, Coding Efficiency and Performance

“…dyadic) adopts the 2:1 relation between neighbor layers, although H.264/SVC also contemplates non-dyadic ratios (Segall & Sullivan, 2007). This last solution demands the inclusion of a new class of algorithm called Extended Spatial Scalability (ESS) (Huang et al, 2007). The approaches of previous scalable encoders basically consist of reusing motion prediction information from lower layers in order to reduce the global stream size.…”

“…In fact, the CGS strategy can be regarded as a special case of spatial scalability when consecutive layers have the same resolution (Huang et al, 2007).…”

“…One of such remarkable features of H.264/SVC is the support for video bit rate adaptation at NAL (Network Application Layer) packet level, which significantly increases the flexibility of the video encoder. Alternative scalable solutions, however, only support adaptation at the level of slices or entire frames (Huang et al, 2007). Furthermore, H.264/SVC improves the compression efficiency by incorporating an enhanced and innovative mechanism for inter-layer estimation, called ILP (Inter-Layer Prediction).…”

Mconf: An Open Source Multiconference System for Web and Mobile Devices

“…an output composed by multiples streams. A special stream, called as base layer, allows the video reconstruction with minimum detail level, while the others streams, called enhancement layers, can increase the video quality in a complementary way (each layer enhances the video generated by the previous one) [Huang, 2007].…”

Combined Source and Channel Strategies for Optimized Video Communications

“…The SVC technology is based on the coding tools available in H.264/AVC, but includes also specific hierarchical and inter-layer predictive coding techniques. For further details on SVC, see (Schwarz et al, 2007) and (Huang et al, 2007). SVC provides a way to encode a video sequence into a single compressed bit-stream composed of a H.264/AVC compatible base layer and multiple additional layers that enhance spatial resolution, frame rate and quality.…”