JVET-AE0172 Update on multilayer coding support for VVenC [S. Iwamura, S. Nemoto, A. Ichigaya (NHK)]

This contribution reports an information update on multilayer coding support for VVenC, which is firstly reported in JVET-AB0086, where the initial support of multilayer coding was implemented on VVenC-1.4.0. The base software was updated to VVenC-1.6.1 and the latest results of VVenC-multilayer over VTM-20.2 is reported as follows:

• Faster BD-rate: {36.69%, 33.07%, 35.95%}, Encoder speedup:170.8x
• Fast BD-rate: {29.02%, 24.08%, 29.52%}, Encoder speedup: 94.2x
• Medium BD-rate: {10.59%, 10.54%, 10.37%}, Encoder speedup: 35.4x
• Slow BD-rate: {5.07%, 4.16%, 3.25%}, Encoder speedup: 10.5x
• Slower BD-rate: {0.52%, 0.29%, -0.98%}, Encoder speedup: 1.4x

The latest version of multilayer support on top of VVenC-1.6.1 is available at GitHub managed by NHK (https://github.com/nhkrd/vvenc.git).