Hacker News new | ask | show | jobs
by corysama 3622 days ago
How is Opus decoding performance coming along compared to Vorbis? I'd love to use Opus in my mobile games (which need more simultaneous channels than the phone's one hardware decoder). But, decode perf is a serious concern. Even decoding once on load is serious business because it affects start-up time and/or frame rate hitching.
2 comments
TD-Linux 3622 days ago
It is slower than Vorbis, but faster than AAC. On my 900MHz rpi2, decoding at 48khz uses about 10% of one core, so you should be alright.
link
mastax 3622 days ago
This mailing list post has some old numbers: http://lists.xiph.org/pipermail/opus/2014-September/002706.h... The "tremolo decoder" is an ARM optimized Ogg Vorbis decoder.

Note this is from before 1.1.1 and 1.1.3 (above) which each contained ARM optimizations so perhaps quite a bit better?

link