[Libav-user] non-causal or two-pass filters

Paul B Mahol onemda at gmail.com
Sat Apr 27 18:55:29 CEST 2013

On 4/26/13, Claudio Freire <klaussfreire at gmail.com> wrote:
> On Fri, Apr 26, 2013 at 6:44 PM, Stefano Sabatini <stefasab at gmail.com>
> wrote:
>> In data Friday 2013-04-26 21:21:04 +0300, Yaron Segalov ha scritto:
>>> Is it possible to create a non-causal filter, or even a two-pass filter?
>> Non-causal??
> One that uses "future samples" to compute "current output". For
> example, negative delay (moving samples earlier in time to be
> precise).

It should be possible, for example:

For first run, filter store useful info in some file, in 2nd run it
use that info
from file to filter frame.

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