Basis Universal GPU Texture Video Transcoding Test (ETC1S->BC1)
.basis universal GPU texture files can be quickly transcoded directly to any other GPU texture format with little to no quality loss. For static texture content, .basis files are 10-25% smaller than rate distortion optimized (RDO) ETC1S texture data losslessly compressed using LZMA. For video, we achieve bitrates that are significantly lower (average .5bpp vs. 2-3bpp) than I-Frame only (BC1+LZ4) Texture Video approaches such as HAP.
Currently, video is a new use case for .basis files, so video encoding using the reference encoder is quite slow and can require a lot of memory (16-32GB) on larger videos, but it will be optimized over time.
Compared to regular pixel-based video, texture video doesn't utilize the IDCT and doesn't require colorspace conversion, chroma upsampling, SIMD, or deblocking filters.
Thanks to Evan Parker for providing webgl-texture-utils and this test bed.
Some other videos to try: peach.basis, reliant.basis
NOTE: Your browser does not support DXT, so using RGB565
for the texture below. To get DXT, try Chrome 19+
(beta channel as of 2012-04-20; graphics card DXT support also required).