Issues with Large Files

[iz]

> Sent: Thursday, January 12, 2017 at 3:30 PM
> 
> My question is with what does one look at a file to find out this info. 
> I tried mediainfo and am none the wiser.  What tool gives me the detail 
> to which Linn referred?

In this case, you only need arithmetic. AAC uses a fixed number of samples per frame (the "1024 spf" you see in the frame rate in MediaInfo output), so the total number of frames is basically a function of sample rate and programme duration. 400k+ would be expected for a 48kHz 9200 sec AAC LC file.