Hey Carl,
Are you sure that this is how HE-AACv2 works? Apple's AVAudioFile class is able
to see the correct sampling rate & channel count.
AVURLAsset & Exoplayer does not properly see it though. Does ffmpeg write the
sampling rate in multiple parts of the MP4 container?
If so, maybe one of them isn't consistent?
Ronak
> On Mar 17, 2018, at 8:02 AM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote:
>
> 2018-03-17 12:38 GMT+01:00, Ronak Patel <ronak2121-at-yahoo....@ffmpeg.org>:
>> Hello,
>>
>> I’m encoding my wav files to HE AAC v2 in 44kHz/32 Kbps and 44/64.
>
> Command line and complete, uncut console output missing.
>
>> Ffprobe is correctly showing that the audio is HE AAC v2 stereo with the
>> correct sampling rate and nitrate.
>>
>> When I open the audio in Exoplayer or Apple’s AVURLAsset code, they report
>> that the sampling rate is 22050kHz instead.
>
> I believe this is how SBR ("HE AAC v2") is defined.
>
> Carl Eugen
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