Re: [FFmpeg-devel] Politics

[Soft Works <softworkz@hotmail.com>]

> -----Original Message-----

> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Soft

> Works

> Sent: Monday, December 20, 2021 11:35 PM

> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>

> Subject: Re: [FFmpeg-devel] Politics

>

>

>

> > -----Original Message-----

> > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org<mailto:ffmpeg-devel-bounces@ffmpeg.org>> On Behalf Of Michael

> > Niedermayer

> > Sent: Monday, December 20, 2021 3:50 PM

> > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org<mailto:ffmpeg-devel@ffmpeg.org>>

> > Subject: Re: [FFmpeg-devel] Politics

> >

> > On Sun, Dec 19, 2021 at 06:31:38PM +0000, Soft Works wrote:

> > >

> > >

> > > > -----Original Message-----

> > > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org<mailto:ffmpeg-devel-bounces@ffmpeg.org>> On Behalf Of

> Soft

> > Works

> > > > Sent: Sunday, December 19, 2021 7:23 PM

> > > > To: FFmpeg development discussions and patches <ffmpeg-<mailto:ffmpeg-devel@ffmpeg.org>

> devel@ffmpeg.org<mailto:ffmpeg-devel@ffmpeg.org>>

> > > > Subject: Re: [FFmpeg-devel] Politics

> > > >

> > > >

> > > >

> > > > > -----Original Message-----

> > > > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org<mailto:ffmpeg-devel-bounces@ffmpeg.org>> On Behalf Of

> > Michael

> > > > > Niedermayer

> > > > > Sent: Sunday, December 19, 2021 4:16 PM

> > > > > To: FFmpeg development discussions and patches <ffmpeg-

> > devel@ffmpeg.org<mailto:devel@ffmpeg.org>>

> > > > > Subject: Re: [FFmpeg-devel] Politics

> > > > >

> > > > > On Sat, Dec 1

> > > 8, 2021 at 08:41:09PM +0000, Soft Works wrote:

> > >

> > > > I don't think that a camera exists that has a framerate high enough

> so

> > that

> > > > you could produce videos at both framerates just from picking

> original

> > > > frames.

> > >

> > > I forgot to mention that I mean a high speed camera which can work at

> such

> > an

> > > odd rate (least common multiple..)

> >

> > for sake of this argument being complete, teh video is computer generated

> > so sampling at any time instance is possible and exact.

>

> Is that so?

>

> First of all, we need to decide about what kind of computer generation

> we are talking exactly?

>

> Is it generating a point-in-time picture for each frame start time?

> Assuming generated video of a situation where visual events that would

> start

> at 10ms, disappear after a duration of 20ms and repeat that every 40ms.

> These things would never be visible in the EU video, but in the US

> video.

>

> You mentioned "sampling", so I guess you mean that each frame would

> represent

> the appearance averaged over the frame duration, right?

> Of course that's a much more correct way to reflect reality.

>

> Enlightened by this, let's go back to to your example. The EU frame has a

> duration of 40ms, the US frame 33.3ms. The US frame start 0.02ms later and

> is fully included in the duration of the EU frame.



Seems I accidentally deleted a paragraph:



The two frames are almost congruent in start and to a large percentage in duration, and as they are meant to present the same picture

 it cannot happen at all that only one of them would have a hard change (like from white to black or something  appearing or disappearing within a short





> If the US-to-EU conversion (or other direction) has been done in a natural

> way without human intervention and explicit cutting, then the example is

> busted once another time.

>

> Want I can't precisely answer (but wondering) , is whether it

> would even pe possible to have single audio stream in the same container

> that could work with both video..?^








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