Hi Suren,
I'm running into the same problem again, I can't see any difference in the different compression levels.
I use the following script to build my pipeline:
#!/bin/bash
INPUT="frame.jpg"
OUTPUT="output"
HEVC_PROFILE="main"
HEVC_LEVEL="1"
VIDEO_BITRATE=0
# VIDEO_BITRATE_MODE: 0 = on, 1 = off
VIDEO_BITRATE_MODE=0
FRAME_RATE_CONTROL=0
TEMP=$(getopt -o 'p:l:b:i:o:h' --long 'profile:,level:,bitrate:,bitratemode:,perframe,input:,output:,help' -n '$0' -- "$@")
if [ $? -ne 0 ]; then
echo 'Terminating...' >&2
exit 1
fi
eval set -- "$TEMP"
unset TEMP
while true; do
case "$1" in
'-h'|'--help')
echo "$0 - H.265 compress a JPEG file into a one second stream"
echo "Parameters:"
echo " -p main|main-still-picture|main-10 (HEVC Profile)"
echo " -l 1|2|2.1|3|3.1|4|4.1|5|5.1 (HEVC Level)"
echo " -b 0..700000000 (Video Bitrate)"
echo " -i input.jpg (Input JPEG file)"
echo " -o output (Base name of output files - gets converted to output%03d.jpg)"
echo " -h This help"
exit 0
shift
continue
;;
'-p'|'--profile')
case "$2" in
'main'|'Main'|'0')
HEVC_PROFILE="main"
;;
'main-still-picture'|'1')
HEVC_PROFILE="main-still-picture"
;;
'main-10'|'2')
HEVC_PROFILE="main-10"
;;
*)
HEVC_PROFILE="main"
;;
esac
echo "HEVC Profile: '$HEVC_PROFILE'"
shift 2
continue
;;
'-l'|'--level')
case "$2" in
'1'|'2'|'2.1'|'3'|'3.1'|'4'|'4.1'|'5'|'5.1')
HEVC_LEVEL="$2"
;;
*)
HEVC_LEVEL="1"
;;
esac
echo "HEVC Level: '$HEVC_LEVEL'"
shift 2
continue
;;
'-b'|'--bitrate')
echo "Video Bitrate: '$2'"
VIDEO_BITRATE=$2
shift 2
continue
;;
'-i'|'--input')
echo "Input: '$2'"
INPUT=$2
shift 2
continue
;;
'-o'|'--output')
echo "Output: '$2'"
OUTPUT=$2
shift 2
continue
;;
'--bitratemode')
echo "Video Bitrate Mode: $2"
VIDEO_BITRATE_MODE=$2
shift 2
continue
;;
'--perframe')
echo "Frame Rate per Frame"
FRAME_RATE_CONTROL=1
shift
continue
;;
'--')
shift
break
;;
*)
echo 'Internal error!' >&2
exit 1
;;
esac
done
#if [ $VIDEO_BITRATE -gt 0 ]; then
# FRAME_RATE_CONTROL=1
#fi
echo -n "Compressing $INPUT to $OUTPUT:"
gst-launch-1.0 -q multifilesrc location="$INPUT" start-index=0 stop-index=29 caps="image/jpeg,framerate=30/1" loop=0 \
! jpegparse \
! jpegdec \
! 'video/x-raw,format=I420' \
! videoconvert \
! v4l2h265enc extra-controls="controls, prepend_sps_and_pps_to_idr=1, frame_level_rate_control_enable=${FRAME_RATE_CONTROL}, video_gop_size=5, video_bitrate_mode=${VIDEO_BITRATE_MODE}, video_bitrate=$VIDEO_BITRATE" \
! "video/x-h265, profile=(string)${HEVC_PROFILE}, level=(string)${HEVC_LEVEL}" \
! tee name=tee0 \
! h265parse \
! v4l2h265dec \
! jpegenc \
! multifilesink location="${OUTPUT}-p${HEVC_PROFILE}l${HEVC_LEVEL}b${VIDEO_BITRATE}m${VIDEO_BITRATE_MODE}f${FRAME_RATE_CONTROL}.%03d.jpg" \
tee0. \
! filesink location="${OUTPUT}-p${HEVC_PROFILE}l${HEVC_LEVEL}b${VIDEO_BITRATE}m${VIDEO_BITRATE_MODE}f${FRAME_RATE_CONTROL}.h265"
echo "Done."
I have some input files at google drive, this includes the script above.
When I call the script multiple times with different parameters:
./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 5.1 -b 6000 --bitratemode 1 ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 5.1 -b 6000 --bitratemode 1 --perframe ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 5.1 -b 6000 --bitratemode 0 ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 5.1 -b 6000 --bitratemode 0 --perframe ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 3 -b 1000 --bitratemode 1 ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 3 -b 1000 --bitratemode 1 --perframe ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 3 -b 1000 --bitratemode 0 --perframe ./h265-compress -i "Frame %d.jpg" -o onsemi2 -p main -l 3 -b 1000 --bitratemode 0
I get the same output:
-rw-r--r-- 1 root root 3112480 Feb 13 06:50 onsemi2-pmainl3b1000m0f0.h265 -rw-r--r-- 1 root root 163960 Feb 13 06:48 onsemi2-pmainl3b1000m0f1.h265 -rw-r--r-- 1 root root 3112480 Feb 13 06:44 onsemi2-pmainl3b1000m1f0.h265 -rw-r--r-- 1 root root 163960 Feb 13 06:46 onsemi2-pmainl3b1000m1f1.h265 -rw-r--r-- 1 root root 3112480 Feb 13 06:55 onsemi2-pmainl5.1b6000m0f0.h265 -rw-r--r-- 1 root root 163960 Feb 13 07:04 onsemi2-pmainl5.1b6000m0f1.h265 -rw-r--r-- 1 root root 3112480 Feb 13 06:40 onsemi2-pmainl5.1b6000m1f0.h265 -rw-r--r-- 1 root root 163960 Feb 13 06:42 onsemi2-pmainl5.1b6000m1f1.h265
The only setting that seems to make a difference is the frame_level_rate_control_enable setting (f0 and f1 in the filenames).
My questions:
* How do I set things up in such a way that the bitrate is taken into account?
* What does the hevc_profile and hevc_level do exactly?
The ultimate goal is to get a stream with a bitrate of 6 Mbps, with variable bitrate enabled.
Bas Vermeulen
