Does x264 does data partitioning for h.264/AVC

[Mobileace]

Currently working on a wireless transmission of H.264 using UEP( unequal error protection). Found out that data partitioning is part of H.264 standard.

May i know how i can do that using x264 or is there other encoder that can does that to h.264/avc?

Meaning to separate the video into DPA(data partition A), DPB, DPC with DPA being the most important partition of the three mentioned.

Really greatful!!

[Dark Shikari]

I doubt data partitioning would be very useful given that residual data quite often makes up less than 50% of the bits at lower bitrates.