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birdie · 7th October 2022, 12:59

AV1 looks like crap, sorry.

Last time I used it with these libaom 3.5 final release options and it smears out the details like there's no tomorrow:

Code:

./aomenc --end-usage=q --cq-level=12 --cpu-used=4 --threads=16 --bit-depth=10 --lag-in-frames=48
    --enable-fwd-kf=1 --enable-qm=1 --enable-chroma-deltaq=1 --quant-b-adapt=1 --mv-cost-upd-freq=2 
    --sharpness=3 --enable-keyframe-filtering=2 --arnr-strength=1 --disable-trellis-quant=0 -o out.webm out.y4m

cq-level=12 !!! That's almost lossless.

I'm disappointed as hell. Now trying vvenc-1.6.1 which is slow as hell but on a first attempt it looks much better:

Code:

./vvencapp --preset slower -qp 20 -i out.y4m --output=bit.266

Edit: at qp=20 the bitrate matches the bitrate of the original H.264 video. LOL.

Modern codecs are something. Weird.

Truth to be told I don't know how to use x264 properly. My source is encoded at 40Mbit/sec. I can only get comparable quality if I encode it at ... 35MBit/sec despite the source being produced by a terrible HW encoder and the result produced by the latest revision of x264 with the following flags:

Code:

ffmpeg -i source.mp4 -c:a copy -c:v libx264 -preset veryslow -x264opts keyint=180:min-keyint=30:bframes=16 -crf 17 -tune grain result.mkv

7th October 2022, 12:59	#4 \| Link
birdie Artem S. Tashkinov Join Date: Dec 2006 Posts: 345	AV1 looks like crap, sorry. Last time I used it with these libaom 3.5 final release options and it smears out the details like there's no tomorrow: Code: ./aomenc --end-usage=q --cq-level=12 --cpu-used=4 --threads=16 --bit-depth=10 --lag-in-frames=48 --enable-fwd-kf=1 --enable-qm=1 --enable-chroma-deltaq=1 --quant-b-adapt=1 --mv-cost-upd-freq=2 --sharpness=3 --enable-keyframe-filtering=2 --arnr-strength=1 --disable-trellis-quant=0 -o out.webm out.y4m cq-level=12 !!! That's almost lossless. I'm disappointed as hell. Now trying vvenc-1.6.1 which is slow as hell but on a first attempt it looks much better: Code: ./vvencapp --preset slower -qp 20 -i out.y4m --output=bit.266 Edit: at qp=20 the bitrate matches the bitrate of the original H.264 video. LOL. Modern codecs are something. Weird. Truth to be told I don't know how to use x264 properly. My source is encoded at 40Mbit/sec. I can only get comparable quality if I encode it at ... 35MBit/sec despite the source being produced by a terrible HW encoder and the result produced by the latest revision of x264 with the following flags: Code: ffmpeg -i source.mp4 -c:a copy -c:v libx264 -preset veryslow -x264opts keyint=180:min-keyint=30:bframes=16 -crf 17 -tune grain result.mkv Last edited by birdie; 7th October 2022 at 17:05.