Driving a 5 year old car that has anOEM DVD player/ screen which takes a 3.5mm jack as source with external RCA+audio female plugs for AV inputs.
Currently my setup is a cheap $60 bucks small AV converter that runs off a USB power from the ciggy plug, and can take USB drive.
Does anyone has any AV converter box to recommend that can be USB powered and take inputs I.E iPad or iPhones or even USB C Samsung phones? Bonus if it can output directly via its own 3.5mm male jack.
So far I haven't come across anything similar on the market.
TIA
I don't believe there's an all-in-one device that achieves what you're after, but how about:
HDMI2AV (although this is what you may already have)
+
USB C to HDMI Cable, or Lightning to HDMI Cable (although this states that some iOS video apps won't work)
If it were me, I'd go with something like an Amazon Fire Stick or a Xiaomi TV Stick, hotspot it to my phone (or use one of these OTG adapters to connect a flash drive to play local media), and control everything with the remote.
A standard 12V USB Charger should be capable of powering one of the above sticks, but if you're also planning on occasionally using it to charge your phone at the same time, it's probably a good idea to purchase a fast charger instead.