S24LE audio playback problem

[JPM]

Hi,

This pipeline works great when receive a S16LE raw audio stream :
Gst.parse_launch ("udpsrc multicast-group=224.1.1.2 auto-multicast=true port=6002 ! audio/x-raw,format=S16LE,rate=48000,channels=1 ! audioconvert ! autoaudiosink sync=false")

But this pipeline does not work and python reports "** (python.exe:11424): WARNING **: audioconvert0: size 1024 is not a multiple of unit size 3" when receive a S24LE raw audio stream :
Gst.parse_launch ("udpsrc multicast-group=224.1.1.2 auto-multicast=true port=6002 ! audio/x-raw,format=S24LE,rate=48000,channels=1 ! audioconvert ! autoaudiosink sync=false")

Any idea what could be happening ?.