A subset bitstream can represent a lower spatial or temporal resolution or a lower quality video signal (each separately or in combination) compared to the bitstream it is derived from. The following modalities are possible:
- Temporal scalability: the motion compensation dependencies are structured so that complete pictures (i.e. their associated packets) can be dropped from the bitstream. (Temporal scalability is already enabled by H.264/MPEG-4 AVC. SVC has only provided supplemental enhancement information to improve its usage.)
- Spatial scalability: video is coded at multiple spatial resolutions. The data and decoded samples of lower resolutions can be used to predict data or samples of higher resolutions in order to reduce the bit rate to code the higher resolutions.
- SNR/Quality/Fidelity scalability: video is coded at a single spatial resolution but at different qualities. The data and decoded samples of lower qualities can be used to predict data or samples of higher qualities in order to reduce the bit rate to code the higher qualities.
- Combined scalability: a combination of the 3 scalability modalities described above.

"[Standard] / ISO-IEC" 분류의 다른 글
| SVC File Format-based Scalable Video Streaming | 2008/06/10 |
| ISO Standard Download | 2008/05/30 |




하늘을 닮은 호수




SVC File Format-based Scalable Video Streaming.pdf


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