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HDMI audio output drift at 44,1 KHz

Question asked by GUERIN Yoann on Aug 8, 2016
Latest reply on Aug 9, 2016 by jimmychan

Hi,

 

I use a custom board with a i.MX6Q.

 

I play a video with audio of 20 minutes. At begin, the audio and the video are OK.

 

But, at 15 minutes, the audio lags behind the video of 645 ms. The output audio is HDMI and the sampling frequency is 44,1 KHz.

 

If I change the sampling frequence from 44,1 KHz to 48 KHz, I haven't this problem.

 

If I use the output AUD5 of AUDMUX and a sampling frequency of 44,1 KHz , I haven't this problem.

 

I don't understand this problem. Could you explain me it?

 

Regards

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