> On Jun 21, 2018, at 9:02 AM, Ronak Patel <[email protected]> 
> wrote:
> 
> Hi,
> 
> We are trying to setup an adaptive stream across two heaac streams and higher 
> order lcaac ones.
> 
> So we’d have something like so:
> 
> HEAACv2 44khz/32kbps
> HEAACv2 44/64
> LCAAC 44/128
> LCAAC 44/256
> LCAAC 44/320
> 
> I setup a test stream this way and I’m seeing some problems.
> 
> Exoplayer is seeing this stream as not being able to support seamless 
> adaptive switching because the defaultSampleDurations in the HE-AACv2 fMP4's 
> moof boxes is 2048 while the LC-AAC file has 1024.
> 
> Why does HE-AACv2 have a higher sample duration when the sampling rate is 
> supposed to be 44100, equivalent to the sampling rate of the LC-AAC audio?
> 


Has anyone ever tried to do this before? Is this a problem with how ffmpeg is 
generating the HEAACv2 fmp4 files?


> Thanks,
> 
> Ronak
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