ffmpeg6 drawtext option question

[Michael Lowery Wilson <michael.l.wilson%utu.fi@localhost>]

Hello,

I am trying to test adding timestamp to a recorded video using ffmpeg6 using 
the following:

ffmpeg6 -i recording.mp4 -vf 
drawtext="fontsize=60:fontcolor=yellow:text='%{localtime}':x=(w-text_w):y=(h-text_h)" 
timestamped-recording.mp4

on

uname -a
NetBSD test.Home 10.0 NetBSD 10.0 (GENERIC) #0: Thu Mar 28 08:33:33 UTC 2024  
mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

However, I get the below result instead:

[AVFilterGraph @ 0x7eb5fb57f580] No such filter: 'drawtext'
[vost#0:0/libx264 @ 0x7eb5fb53a500] Error initializing a simple filtergraph
Error opening output file timestamped-recording.mp4.

Which points toward an issue with the drawtext filter. I have checked and my 
version of ffmpeg6 is compiled with the --enable-libfreetype flag by default,  
which is required for the drawtext filter:

https://ayosec.github.io/ffmpeg-filters-docs/3.3.9/Filters/Video/drawtext.html

My compiled options:

ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10.5.0 (nb3 20231008)
  configuration: --enable-avfilter --enable-postproc --disable-ffplay 
--enable-rpath --enable-fontconfig --enable-libfreetype --enable-libass 
--enable-libaom --disable-librav1e --enable-libdav1d --disable-htmlpages
--enable-gnutls --disable-mbedtls --disable-libopencore-amrnb 
--disable-libopencore-amrwb --disable-openssl --disable-libjack
--disable-libpulse --disable-libtesseract --enable-libtheora 
--enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libspeex
--enable-libxvid --enable-libx264 --enable-libx265 --enable-vdpau
--enable-vaapi --enable-libvpx --enable-libwebp --enable-libxcb 
--enable-libxcb-shape --enable-libxcb-shm --enable-libxcb-xfixes
--enable-libbluray --arch=x86_64 --cc=gcc --disable-debug 
--disable-optimizations --disable-stripping --enable-gpl --enable-libxml2 
--enable-pthreads --enable-shared --mandir=/usr/pkg/man --prefix=/usr/pkg 
--progs-suffix=6 --enable-runtime-cpudetect --datadir=/usr/pkg/share/ffmpeg6
--docdir=/usr/pkg/share/doc/ffmpeg6 --incdir=/usr/pkg/include/ffmpeg6
--libdir=/usr/pkg/lib/ffmpeg6 --shlibdir=/usr/pkg/lib/ffmpeg6

I also tried the original command while specifying a font file using:

-vf 
drawtext="/usr/pkg/share/texmf-dist/fonts/truetype/public/gnu-freefont/FreeSerif.ttf: 
fontcolor=yellow:text='%{localtime}':x=(w-text_w):y=(h-text_h)"

and get the following:

[AVFilterGraph @ 0x7ed38f266580] No option name near 
'/usr/pkg/share/texmf-dist/fonts/truetype/public/gnu-freefont/FreeSerif.ttf: 
fontcolor=yellow:text=%{localtime}:x=(w-text_w):y=(h-text_h)'
[AVFilterGraph @ 0x7ed38f266580] Error parsing a filter description around: 
[AVFilterGraph @ 0x7ed38f266580] Error parsing filterchain 
'drawtext=/usr/pkg/share/texmf-dist/fonts/truetype/public/gnu-freefont/FreeSerif.ttf: 
fontcolor=yellow:text='%{localtime}':x=(w-text_w):y=(h-text_h)' around: 
[vost#0:0/libx264 @ 0x7ed38f221500] Error initializing a simple filtergraph
Error opening output file timestamped-recording.mp4.
Error opening output files: Invalid argument

There is probably a simple fix to this, or something that I have overlooked, 
but I am quite challenged to find it.  Has anyone run into anything similar or 
has any advice as to how to get this working?

Thank you very much!

Michael