lossless-test.sh

#!/bin/bash

REC=$1
ODVD=$2

# Display the last frame.
xhost +

cat <<EOF > script.sh
rm -fr opendlv.proxy.* last-frame*
cluon-rec2csv --rec=$REC --odvd=$ODVD
cat opendlv.proxy.ImageReading-0.csv | tail -1 | cut -f10 -d";" | cut -f2 -d"\"" | base64 -d > last-frame.h264
WIDTH=\$(cat opendlv.proxy.ImageReading-0.csv | tail -1 | cut -f8 -d";")
HEIGHT=\$(cat opendlv.proxy.ImageReading-0.csv | tail -1 | cut -f9 -d";")
ffmpeg -f h264 -i last-frame.h264 last-frame.yuv

# 1. Encode the YUV frame with x264 using certain settings into an H264.
x264 --profile baseline --preset veryfast --tune zerolatency --input-res \${WIDTH}x\${HEIGHT} --bitrate 25000 -o last-frame-lossy.h264 last-frame.yuv

# 2. Decode the H264 back into YUV.
ffmpeg -f h264 -i last-frame-lossy.h264 last-frame-lossy.yuv

# 3. Compare the impact of the encoding.
compare -verbose -metric MAE -size \${WIDTH}x\${HEIGHT} last-frame.yuv -size \${WIDTH}x\${HEIGHT} last-frame-lossy.yuv null: 2>&1

ls -l last-frame-lossy.h264

display -size \${WIDTH}x\${HEIGHT} -depth 8 -sampling-factor 4:2:0 -colorspace RGB last-frame-lossy.yuv
EOF
chmod 755 script.sh

docker run --rm -ti --init -v $PWD:/data -v /tmp:/tmp -e DISPLAY=$DISPLAY -w /data codec-performance:latest ./script.sh

rm -f script.sh