[FFmpeg-devel] [PATCH] avfilter: add Audio Video Sync Test filter

Paul B Mahol onemda at gmail.com
Wed Aug 23 12:48:21 EEST 2017

On 8/23/17, Nicolas George <george at nsup.org> wrote:
> Le duodi 2 fructidor, an CCXXV, Paul B Mahol a écrit :
>> You completely ignored and removed other aspects of my reply.
> You still are being vague.
>> Something special, like one can control both audio and video aspect at
>> once and provide same info to output.
> On the usability / convenience question, we obviously disagree. I
> consider that multiplying the test source filters is a more serious
> source of annoyance and confusion for the users, but it is a matter of
> appreciation and you obviously disagree. For that kind of question the
> normal policy would be to ask for the appreciation of other people,
> especially the ones who deal with users on a regular basis, before
> committing.

I was asked multiple times to implement this filter.

> As for the technical issues, there are two, and the answer must be
> technical:
> This filter includes some amount of boilerplate code, which is a
> maintenance burden. Please make more efforts to reduce that. In this
> particular instance, I believe using the framework that Stefano designed
> for test sources would reduce the boilerplate code.

What framework? There is only framework for video source filter which
outputs static frames.

> This filter is not bit-exact. A test source needs very strongly to be
> bit-exact. There is in the code base all that is needed to make it so,
> and that would make it faster as well.

I could make use of sine filter code.

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