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Blue_MiSfit · 16th February 2019, 21:33

Very cool. I'm playing with this now.

Default settings are quite fast - it did 12 fps for 480p on my i7 7700k with 50% CPU usage and 1.2 GB RAM usage.

Here's the basic usage guide:
https://github.com/OpenVisualCloud/S..._user_guide.md

A sample command:
.\SvtAv1EncApp.exe -i .\beauty_480p.yuv -b out.ivf -w 848 -h 480 -fps 24

Yes, I had to encode at 848x480 and not 854 - comically this encoder requires mod 8 input

Results aren't too bad - the default CQ 50 setting produced a 623 Kbps file that looks marginally okay, and CQ 40 produced a 1.2 Mbps file that looks a lot better. There are some odd artifacts, almost like the edges of objects wiggle a bit every other frame.

However, I'm getting very jerky playback for some reason. I've tried a LAV nightly build in MPC-HC, latest VLC, and ffplay, and they all show the issue. I confirmed my input YUV is 24 fps and the output webm is 24 fps. When I step through it frame by frame it's all there, but for some reason it's jerky on playback. I don't recall seeing this with aomenc encodes, and the decoder isn't close to maxing out one core, so I'm not sure what's up with that...

16th February 2019, 21:33	#1479 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	Very cool. I'm playing with this now. Default settings are quite fast - it did 12 fps for 480p on my i7 7700k with 50% CPU usage and 1.2 GB RAM usage. Here's the basic usage guide: https://github.com/OpenVisualCloud/S..._user_guide.md A sample command: .\SvtAv1EncApp.exe -i .\beauty_480p.yuv -b out.ivf -w 848 -h 480 -fps 24 Yes, I had to encode at 848x480 and not 854 - comically this encoder requires mod 8 input Results aren't too bad - the default CQ 50 setting produced a 623 Kbps file that looks marginally okay, and CQ 40 produced a 1.2 Mbps file that looks a lot better. There are some odd artifacts, almost like the edges of objects wiggle a bit every other frame. However, I'm getting very jerky playback for some reason. I've tried a LAV nightly build in MPC-HC, latest VLC, and ffplay, and they all show the issue. I confirmed my input YUV is 24 fps and the output webm is 24 fps. When I step through it frame by frame it's all there, but for some reason it's jerky on playback. I don't recall seeing this with aomenc encodes, and the decoder isn't close to maxing out one core, so I'm not sure what's up with that... Last edited by Blue_MiSfit; 16th February 2019 at 21:48.