[FFmpeg-devel] [PATCH 2/3] avfilter: add audio upsample filter

[Gyan]

On 19-04-2019 02:43 PM, Nicolas George wrote:
> Paul B Mahol (12019-04-19):
>> Users that know what they are doing will do:
>>
>> upsample=4,some additional filtering,alimiter=parameters,some
>> additional filtering,downsample=4
> Bad design. We have sample rate negotiation.

How about a filter that can store link and/or frame props as metadata? 
This filter can be inserted before 'processing' filters.

Then Paul's filters, inserted afterwards, can read those meta keys to 
obtain pre-process props.

Gyan