I recently bought a fpv system for my quad, it works great but my fpv has even the audio ND my screen can support only video, so there is an extra red Av plug on my video reciver, is there any way I can connect it to a small speaker, or maybe earphones or something? Something portable? , I have a speaker but it has a 3.5mm jack I don't know how to connect Av to that, is it possible?

Immanuel you are going good best of luck.
came to FPV.

buy AV Female jack, 3.5mm audio Jack/EP Pin.
and DIY yourself, nothing complicated just need direct connection,
But that speaker should have amplifier because output of receivers are too low.

Just connect audio out of the AV receiver to any audio system with line in aux input with a single AV cable.

Select Auxiliary input in the Audio system and you are good to go.

It's all thnx to @ rcnitesh , without u I would not have known from were 2 order stuff . //, yeah ill try thnx for the help!

Your welcome, just one thing don't use sms language.

Roger that