On Wed, Dec 22, 2021 at 01:29:04PM +0000, Soft Works wrote:
> 
> 
> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> > Niedermayer
> > Sent: Monday, December 20, 2021 4:24 PM
> > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] Politics
> > 
> > I am not sure the direction from which you approuch this is going to
> > increase the chances this patch has.
> > 
> > All stream types in libavformat/codec are timebase based, that was
> > done because its exact (for some definition of exact at least)
> > 
> > I think you should argue why this is the best way forward not why its
> > not too bad
> > 
> > also in a few places where a fixed timebase is used ffmpeg uses
> > AV_TIME_BASE_Q which is micro not milli seconds. That suddenly
> > allows exactly addressing individual frames and audio samples.
> > And it should be easy to change to from ms, its just a *1000
> > it would weaken the precission argument
> 
> For the final chapter of this story, let us return to the original 
> subject which I would summarize like:
> 

[...]

> I think I know better and therefore insist 
> on having a higher precision and/or flexible timebase for subtitle 
> timings, otherwise I won't accept the patchset"

I didnt say any of this

what is the case is that FFmpeg tries to use flexible timebases 
for everything. And also we try to be exact
I have said nothing about accepting or rejecting this patchset,
nor have i really made my mind up on how i would vote if it comes
to a vote.
What i have made my mind up on is that if someone replaces these
timestamps with higher precission or exact ones i would support it.

Also i do want someone to work on and improve subtitles
in FFmpeg. iam not your oponent here. I do want you to stay and
continue to contribute. But the area you picked certainly is
one where people have strong oppinions and its a big change as
well. I would suggest to keep a cool head and not give up yet.
Find out exatly what the people who objected want and if you can
find some compromise that makes everyone ok with it


> 
> Let's look at the concern first: The concern is about that with 
> a subtitle precision of milliseconds (let's say milli, even
> though we actually have microseconds), it would not be possible

Not sure i understand you but the code you add to AVFrame says "ms" and 
thats milli not micro, 
the prefix for micro is the SI system is μ or u if you want ASCII

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In fact, the RIAA has been known to suggest that students drop out
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