Slice dropping in H.264

[krao]

Hi,

I am doing research on error concealment and I need to setup H.264 in a particular way. I have downloaded the H.264 reference codec and using it.

I need to set it to FMO mode with Type1 i.e Checkerboard pattern. I could achieve this by the following settings:



SliceMode = 1
SliceArgument = 792 //since I am using qcif
num_slice_groups_minus1 = 1
slice_group_map_type = 1
slice_group_change_direction_flag = 0
slice_group_change_rate_minus1 = 85
SliceGroupConfigFileName = "sg0conf.cfg" # Used for slice_group_map_type 0, 2, 6

UseRedundantPicture = 0
NumRedundantHierarchy = 1
PrimaryGOPLength = 10
NumRefPrimary = 1


Now how do I drop one of the slices so that I can see an alternating checkerboard pattern at the decoder? Also how to I add SKIP macroblock functionality to the slices?

Any thoughts? I am not clear with the settings in the encoder.cfg file.

Thanks !