[FFmpeg-user] Dynaudnorm & earwax filters

Paul B Mahol onemda at gmail.com
Wed Dec 12 18:26:19 EET 2018

On 12/12/18, Ronak <ronak2121-at-yahoo.com at ffmpeg.org> wrote:
>> On Dec 12, 2018, at 8:32 AM, Nicolas George <george at nsup.org> wrote:
>> Ronak (2018-12-11):
>>> Ok thanks. I tried to use this filter in my iOS code; but I'm getting
>>> errors with an error code -35.
>>> This is my code that tries to write data into the filter graph and
>>> reads it back; what am I doing wrong?
>> I do not read whatever language that is, but at the very least your code
>> is missing the translation error code -> error message.
> I found out what my problem is; it's that the dynaudnorm filter is returning
> EAGAIN; which means I need to send it more PCM frames.
> Now, I'm trying to integrate this filter into a real time player context;
> and I would like to avoid audio artifacts. I've been playing with various
> options that the filter has; but I can't seem to find one where it would
> work better in the real time context.
> Does anyone know what the correct parameters would be so it works frame by
> frame or in a much smaller frame size so we can avoid audio artifacts?
> Alternatively, is there another ffmpeg filter better suited to real time
> dynamic range compression or volume normalization?

If you read documentation of filter options you would know.

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