[1] Modern multimedia codecs, like G.718 and Adaptive Multi-Rate (AMR) for audio and H.264 and MPEG-4 for video, have resilience features already built into the syntax and structure of the stream.
These codecs are ideal partners for UDP-Lite, since they are designed to work with a damaged data stream, and it is better for these codecs to receive perhaps 200 bytes where a few bits are damaged rather than have to conceal the loss of an entire packet that was discarded due to a bad checksum.
The application is the best place to decide which parts of the stream are most sensitive to error and protect them accordingly, rather than have a single "brute force" checksum that covers everything equally.
An example of this can be seen in research by Hammer et al. where UDP-Lite is coupled with the AMR codec to give improved speech quality in lossy network conditions.
On the receiving side a socket will by default drop all packets which are not covered completely (UDP emulation.)
Packets with a smaller length of coverage will always be dropped independent of any settings (ignoring sniffers which are interested in all traffic) as not conforming to standard.