How can I send multimedia files through Meshtastic?

Guide me, whether meshtastic library supports sending image, audio and video file?

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Unfortunately Lora is too slow for this kind of application.

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Does anybody know the max number of bytes you could fit in a meshtastic packet?

depending on the spreading factor, it can be from 51 to 222 bytes

Limitations: data rate, packet size, 30 seconds uplink and 10 messages downlink per day Fair Access Policy [guidelines]

Maybe you could fit most of a second of speech audio in a packet if you’re lucky using Lyra at 3kbps…

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I guess this might be out of scope since OP asked for the built in support, but wouldn’t it be fesable to slowly transfer binary data and assemble it on the receiving end?

Not sure if this would be a bit abusive towards some larger public mesh networks.

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A very important and valid point.