h264 video call lagency with cif , with polycom vxx1500 video phone

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What steps will reproduce the problem?
1. imsdroid call polycom vxx1500 with codec h264 ,
polycom send cif video, imsdroid receive well and no langency in imsdroid screen, but in the polycom screen ,the video send by imsdroid lagency about 2 seconds,.
2. the audio lagency exist also, sound from imsdroid->polycom is well, but when
sounds from polycom->imsdroid,
imsdroid side has lagency about two seconds.

3.

What is the expected output? What do you see instead?
my be that is the software encode h264 codec problem , but what when it come
to audio lagency ?

What version of the product are you using? On what operating system?
i use version 2.0 and doubango 2.x

Please provide any additional information below.

the strange thing is that the lagency exist only on one side ,both audio and
video has this problem .

is any one interest in hardware encode ? in tinyDAV i see the h264 encode is
done by ffmpeg .

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Original issue reported on code.google.com by `openser@yeah.net` on 3 Jun 2011 at 6:23