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Dropping samples while capturing video & encoding video & capturing audio & encoding audio

wenping yan
Prodigy 100 points

Hi guys,

    I have a issue about encoding video & audio at the same time.

    when capturing & encoding video or audio singly,every thing is good.

    but ,capturing & encoding video within capturing & encoding audio ,the audio capture reports:downstream handlers cannot handle the data packet at time,and then dropping occurs.

    video: H264,1080p,25FPS 2M bitrate

   audio:44100 samplerate,16bit,128K bitrate.

   I have Measured the frequence of hardware aic3x's(audio cap) rate is corrent,while run encoding video & audio,by Oscilloscope.

  and I think,the problem is the EDMA module.maybe there is conflict about video & audio trans.

  Now,I can find the audio driver src code,in dvsdk/psp/linux-2-kernel/sound/soc/davinci .and i can reporting the DMA channel and TC queue used in audio cap.

  but i can't find ,where is the video capture src code,and don't know how to report the DMA channel and TC queue used in video cap.

 So,my question is:

   1,Is my thinking corrent? the reason of dropping of samples is the DMA channel / TC queue confict .

  2,if not,anyone knonws how to solve this problem?

thanks.