hls has low CPU utilization

[vidbin]

When using HLS CPU usage is reduced by up to 2/3rd.

Using a three minute 1440p60 video:

ffmpeg -i /root/1440p.mkv -y -acodec aac -vcodec libsvtav1 -threads 24 -f mp4 -movflags faststart -max_muxing_queue_size 1024 -map_metadata -1 -pix_fmt yuv420p -b:a 192k -ac 2 -vf scale=w=-2:h=1080 -crf 42 -preset 7 -g 999 /root/output-1080p-fragmented.mp4

CPU utilization is 2000%-2200%

However, using the below command is only 700% CPU utilization:

ffmpeg -i /root/1ea4267d-37e3-4d40-bb92-124dd8faf1a6-1440-fragmented.mp4 -y -acodec aac -vcodec libsvtav1 -threads 24 -f mp4 -movflags faststart -max_muxing_queue_size 1024 -map_metadata -1 -pix_fmt yuv420p -b:a 192k -ac 2 -vf scale=w=-2:h=1080 -crf 42 -preset 7 -g 999 -hls_time 4 -hls_list_size 0 -hls_playlist_type vod -hls_segment_filename /root/1080-fragmented.mp4 -hls_segment_type fmp4 -f hls -hls_flags single_file /root/1080.m3u8

I'm trying on a later ffmpeg build and have the same issue.

ffmpeg version git-2022-09-10-c92edd9 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --enable-gpl --enable-version3 --enable-gnutls --enable-static --disable-debug --disable-ffplay --cc=gcc --enable-fontconfig --enable-gray --enable-libaom --enable-libopus --enable-libvpx --enable-libsvtav1 --enable-libx264
  libavutil      57. 36.101 / 57. 36.101
  libavcodec     59. 42.104 / 59. 42.104
  libavformat    59. 30.101 / 59. 30.101
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 48.100 /  8. 48.100
  libswscale      6.  8.108 /  6.  8.108
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
Hyper fast Audio and Video encoder

[vidbin]

After further testing the CPU usage is only limited to 700% when encoding lower resolutions from the created HLS video.

So probably not a ffmpeg bug. I'll go ahead and close this.