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DVR RDK Problems

I have several problems with DVR_RDK kit.

1. When I use the basic application dvr_rdk_gui for recording video into AVI-file from channel 0, after some time (about 10 minutes) the channel of sound recording is changed on 15 channel and doesn't comes back to the channel 0. I suppose there is a bug in audio device driver ALSA – libasound.so.2.0.0.

2. Sometimes, several times in a minute, audio device driver sends the same fragment of recorded data to the main application twice. The size of this block is 4096 words. I can provide audiofiles for demonstrate this effect. They can help detect the source of problem.

3. When dvr_rdk_gui is running, there are error messages appear on the terminal window:
"plughw:0,0:overrun!!!
plughw:0,1:overrun!!!"
These messages are formed in function Audio_alsaXrun(), file audio_alsa.c.

What are steps to resolve this problems? Thanks for help ahead of time.