Dear H323plus Team:

I think I need some help that when I use the simph323,it can't use the H.264 in my ubuntu 16.04,and the sound device is NO Audio .

I wanted to found the solutions by Google ,but I can only found I need to install libavcodec and alsa .so I do it.

And the sound output device can be found ,but the sound input device still NO Aduio.

In my ubuntu 16.04 ,I had install all about alsa ,and I install libavcodec-dev and ffmpeg ,but it doesn't work.

The error message is as follows

Sound output device: "alsa_output.pci-0000_02_02.0.analog-stereo"

Sound input device: "Null Audio"

checking for LIBAVCODEC... yes

configure: libavcodec stack align hack disabled

checking for h263p_encoder in -lavcodec... no

checking for h263p_encoder in -lavcodec... (cached) no

checking for mpeg4_encoder in -lavcodec... no

checking for h264_decoder in -lavcodec... no