—Compression efficiency and bitrate scalability are among the key factors in video coding. The paper introduces novel sub-sequence coding techniques for temporal scalability. The presented coding schemes provide a wider range for bitrate scaling than conventional temporal scalability methods and maintain high coding efficiency at the same time. The proposed sub-sequence techniques are adopted into the latest video coding standard H.264, making it easy to identify subsequences and possible to discard them intentionally. As shown by the extensive simulations, a wide range of applications, from mobile messaging to consumer electronics such as digital TV can benefit from sub-sequences.
Dong Tian, Miska M. Hannuksela, Moncef Gabbouj