Encode quality worse than reference encoder #10
Description
I'm seeing worse quality from vc2hqencode than from the vc-2 reference encoder, even at --speed=slowest:
./vc2-reference/tools/convert_to_16p2 crowd_run_frame_1.yuv
./vc2-reference/src/EncodeHQ-CBR/EncodeHQ-CBR -v -x 1920 -y 1080 -f 4:2:2 -l 10 -k LeGall -d 3 -u 1 -a 2 -s 1296000 crowd_run_frame_1.yuv.16p2 ref_crowd_run_frame_1.vc2
./vc2hqdecode/testprogs/vc2decode ref_crowd_run_frame_1.vc2 ref_crowd_run_frame_1.yuv
./vc2hqencode/testprogs/vc2encode -r=4 --width=1920 --height=1080 -w=legall -d=3 --sliceheight=8 --slicewidth=16 --speed=slowest crowd_run_frame_1.yuv opt_crowd_run_frame_1.vc2
./vc2hqdecode/testprogs/vc2decode opt_crowd_run_frame_1.vc2 opt_crowd_run_frame_1.yuv
ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 59.94 -pix_fmt yuv422p10le -i ref_crowd_run_frame_1.yuv -f rawvideo -vcodec rawvideo -s 1920x1080 -r 59.94 -pix_fmt yuv422p10le -i crowd_run_frame_1.yuv -lavfi "psnr=psnr_ref.log" -f null -
ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 59.94 -pix_fmt yuv422p10le -i opt_crowd_run_frame_1.yuv -f rawvideo -vcodec rawvideo -s 1920x1080 -r 59.94 -pix_fmt yuv422p10le -i crowd_run_frame_1.yuv -lavfi "psnr=psnr_opt.log" -f null -
$ more *.log
::::::::::::::
psnr_opt.log
::::::::::::::
n:1 mse_avg:83.12 mse_y:88.70 mse_u:81.51 mse_v:73.60 psnr_avg:41.00 psnr_y:40.72 psnr_u:41.09 psnr_v:41.53
::::::::::::::
psnr_ref.log
::::::::::::::
n:1 mse_avg:62.31 mse_y:62.94 mse_u:64.03 mse_v:59.34 psnr_avg:42.25 psnr_y:42.21 psnr_u:42.13 psnr_v:42.46
$ wc -c *.vc2
1296053 opt_crowd_run_frame_1.vc2
1296053 ref_crowd_run_frame_1.vc2
vc2hqdecode shows both files with the same wavelet transform parameters:
Transform Parameters:
Wavelet : LeGall 5,3
Depth : 3 levels
Slices : 120 x 135
Files in a zip:
[crowd_run_frame_vc2_issue.zip](https://github.com/bbc/vc2hqencode/files/4940720/crowd_run_frame_vc2_issue.zip