[FFmpeg-user] No accelerated colorspace conversion found from yuv422p to rgb24

[Roger Pack]

> Input #0, video4linux2,v4l2, from '/dev/video3':
>   Duration: N/A, start: 59.798126, bitrate: N/A
>     Stream #0:0: Video: mjpeg, yuvj422p, 640x480, 0 kb/s, 5 tbr, 1000k tbn,
> 5 tbc
> ffmpeg: relocation error: /usr/local/lib/libavfilter.so.3: symbol
> sws_get_class, version LIBSWSCALE_2 not defined in file libswscale.so.2
> with link time reference

Sounds like you have some kind of version conflict, I'd suggest
deleting all of these files between reconfiguring/reinstalling ffmpeg,
to try to avoid any odd conflict...