Problems when recording a bag

[boris-il-forte]

It seems that are some problems when recording bags:

1. The data is published correctly, but the root frame is not recorded properly, only the base link and the bottomcam are recorded. The same doesn't happen with a static transform publisher, with the same topology.

I tried also to change the root frame, but the output is the same
I added to the launch file the following string:

2. the driver outputs the following error:
   [ERROR] [1409058738.881506284]: Compressed Depth Image Transport - Compression requires single-channel 32bit-floating point or 16bit raw depth images (input format is: rgb8).

However the raw image is recorded properly

[boris-il-forte]

output from driver

output when root is unchanged (from driver)

output from bag (same if i change or not the root frame)