ekiga can't start a h263/263+/264 video chat

hi list

my distribution is archlinux up to date and ekiga 4.0.1

my ekiga can only start a h261 video chat ,

everytime i try to start a h263/263+/264 video chat i got a error like 
"H263+   Error linking function avcodec_init, 
error=/usr/lib/libavcodec.so.56: undefined symbol: avcodec_init"

seems ekiga can't load those libinary file correctly .

any body face this issue before ?

i have attached debug 4 log file .

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