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If you are transmitting uncompressed images, UDP is probably a bad idea anyway, especially if anything wireless is involved.
A 640x480 image with RGBA color amounts to 1.2M data. Assuming a frame size of 1500 bytes per packet, you have to transmit about 820 packets per image. UDP has no fail-safe for transmission errors. Assuming a packet loss rate of 0.1%, you have just a 44 percent (0.999^820) chance of transmitting a single image intact.