> On Aug 17, 2020, at 5:13 PM, Eric Hsieh <eric.hs...@liteon.com> wrote:
> 
> Hi Ross,
> 
> I would to player can receive the audio/video frames at same time.

The issue is: At what time(s) do you want the player to *play* the audio and 
video frames?  If you want the player to play the audio and video at the same 
time, then the audio and video need to have the same presentation time.

But earlier, you said:

> H264 frame's presentation time start from 1.000000.
> AAC frame's presentation time start from 1.640000.

If that’s what you meant, then the audio will start playing 640ms after the 
video.  Because that’s what “presentation time” means.


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/


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