FFMPEG段线程等效选项

I was downloading video from a hls m3u8 stream using the ffmpeg command in php:

exec('ffmpeg -hide_banner -loglevel verbose -n -i https://example.com/playlist.m3u8 -acodec copy -bsf:a aac_adtstoasc -vcodec copy file.mp4 1> log.txt  2>&1', $output, $var);

But I was having problems downloading speed and the problem was not the internet.

So I installed and used the livestreamer.io OR streamlink.github.io/ and also slowed down the download.

So I made use of the hls-segment-threads=5 option according to the API document:

The size of the thread pool used to download segments.

This solved the problem, is there any equivalent option in the FFMPEG? Or have something I can do with PHP + FFMPEG to get this result that this hls-segment-threads option provides?

Most shared servers come with FFMPEG installed but the same does not fit with livestreamer or streamlink so I need a solution that works for everyone.

*I do not understand python do not know what this option exactly does