Linking issue
When building the same version as in #760 (closed), I get a linking issue at the end:
/usr/bin/ld: /tmp/ccGU8men.ltrans32.ltrans.o: undefined reference to symbol 'av_frame_alloc@@LIBAVUTIL_57'
/usr/bin/ld: /usr/lib/libavutil.so.57: error adding symbols: DSO missing from command line
Not sure why… but note I’m using ffmpeg 5.x from system packages (Arch).