Doom9's Forum - View Single Post - xvc - a next-generation video codec at xvc.io

colinhunt · 17th March 2018, 23:16

I ran a few encodes today, with the aim of comparing xvc and av1. Now, this is far from a definitive comparison, seeing as I often have trouble finding my own butt with both hands, and generally just mess about with encoders like a drunkard stumbling around in the dark.

Aaanyway, here's how I set up the encodes.

source: 1080p24 8bit 4:2:0 469 frames
xvc: speed mode 2, qp30, explicit setting "aqp_strength 16", single pass
av1: cpu_used 2, tile-columns 6, usage vbr, threads 14, bitrate-target 1370kbps, single pass

Encoder versions

xvc: binary from Jonatans' post #32 in this thread
av1: LigH's binary 0.1.0-8449-g6471e8bd7

Encoding times, reported bitrates and filesizes

xvc: 10984 seconds / 1375 kbps (by encoder) / 3 360 139 bytes (.xvc)
av1: 9120 seconds / 1404 kbps (by Mediainfo) / 3 580 224 bytes (.webm)

It should be noted that xvc ran on a single thread at a cpu load of 4%, while av1 ran on 14 threads at an average cpu load of 20% (bouncing between 4-60%).

Metrics
Red is xvc, green is av1. Higher, i.e. closer to 1.000, is better.

3SSIM

MSSIM

17th March 2018, 23:16	#44 \| Link
colinhunt Registered User Join Date: Dec 2002 Posts: 1,022	I ran a few encodes today, with the aim of comparing xvc and av1. Now, this is far from a definitive comparison, seeing as I often have trouble finding my own butt with both hands, and generally just mess about with encoders like a drunkard stumbling around in the dark. Aaanyway, here's how I set up the encodes. source: 1080p24 8bit 4:2:0 469 frames xvc: speed mode 2, qp30, explicit setting "aqp_strength 16", single pass av1: cpu_used 2, tile-columns 6, usage vbr, threads 14, bitrate-target 1370kbps, single pass Encoder versions xvc: binary from Jonatans' post #32 in this thread av1: LigH's binary 0.1.0-8449-g6471e8bd7 Encoding times, reported bitrates and filesizes xvc: 10984 seconds / 1375 kbps (by encoder) / 3 360 139 bytes (.xvc) av1: 9120 seconds / 1404 kbps (by Mediainfo) / 3 580 224 bytes (.webm) It should be noted that xvc ran on a single thread at a cpu load of 4%, while av1 ran on 14 threads at an average cpu load of 20% (bouncing between 4-60%). Metrics Red is xvc, green is av1. Higher, i.e. closer to 1.000, is better. 3SSIM MSSIM Last edited by colinhunt; 17th March 2018 at 23:44.