videobox: framebuffer images

The LCD

• Let's enable the binary lcd driver magic wget -c https://raw.githubusercontent.com/LeMaker/fex_configuration/master/banana_pi_35lcd.bin
• Put this in the sd card /boot partition as script.bin
• Boot the sd card and let's test if we can load the lcd module modprobe lcd
• Now let's load the lcd module at every boot: vi /etc/modules
• Add a line that reads 'lcd'

The framebuffer image viewer

• Let's install a framebuffer image viewer first: apt-get install fbi
• Since we are working remotely, we need to specify the terminal it needs to show on: fbi -T1 pingu.jpg fbi -T 1 --noverbose --autozoom pingu.png

Grabbing frames from the stream

The first attempts at parsing the entire stream continuously didn't work. Too cpu intensive: ffmpeg -i udp://227.0.0.2:9000 -vf "select=not(mod(n\,10))" -vsync vfr -q:v 2 img_%03d.jpg

ffmpeg -i udp://227.1.2.1:9000 -vf "select=eq(pict_type\,I)" -vsync vfr -s 160x120 -updatefirst 1 /mnt/ssd/pingu.bmp

ffmpeg -i udp://227.1.2.1:9000 -vf 1/60 -vsync vfr -s 160x120 -updatefirst 1 /mnt/ssd/pingu.bmp

So we switched to regularly grabbing one frame from the udp stream that the box: ffmpeg -i udp://227.1.2.2:9000 -vf scale=160:-1 -qscale:v 20 -vframes 1 -y /mnt/ssd/status.jpg