[FFmpeg-user] Performance Tuning for Raspberry Pi

[Carl Eugen Hoyos]

2018-10-17 21:24 GMT+02:00, Bruce Diesel <bruce.diesel at gmail.com>:

> The command is:
> ffmpeg -f v4l2 -i /dev/video0 -vf
> drawtext="fontsize=20:fontfile=FreeSerif.ttf:textfile=/dev/shm/Sensors.txt:
> reload=1:x=(w-text_w)/2:y=(h-text_h)/2" test.mpg
>
> The output is:
> ffmpeg version 3.2.10-1~deb9u1+rpt2 Copyright (c) 2000-2018 the FFmpeg

This is more than two years old and it is possible that current
FFmpeg git head contains more optimizations for arm (I don't
know). If they exist, they should make a measurable difference.

In any case, don't expect miracles, there is nothing obviously
wrong with your command line, but you can always compare
with x264 ultrafast, it may be faster, I never tested.

Carl Eugen