On Wed, Apr 12, 2023 at 10:06:19AM +0200, Anton Khirnov wrote:
> Quoting Michael Niedermayer (2023-04-10 21:01:40)
> > On Sun, Apr 09, 2023 at 01:50:08PM +0000, Anton Khirnov wrote:
> > > ffmpeg | branch: master | Anton Khirnov <anton@khirnov.net> | Tue Mar 21 12:36:03 2023 +0100| [090950f8327c01b1775615b1da723dc6cc8a30a0] | committer: Anton Khirnov
> > > 
> > > fftools/sync_queue: use timebase from input frames/packets
> > > 
> > > They are always properly set now. Avoid a separate timebase-setting
> > > call, which duplicates the knowledge of the timebase being used.
> > 
> > This looses bitrate information in some cases
> > 
> > ./ffmpeg -analyzeduration 1M -y -i ~/videos/mm-short.mpg -vcodec copy -aspect 16:9 -vframes 3 tmp.avi
> 
> Cannot reproduce with a random mpeg file. Where can I find this sample?

sorry, its here:
https://samples.ffmpeg.org/MPEG2/mm-short.mpg

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Awnsering whenever a program halts or runs forever is
On a turing machine, in general impossible (turings halting problem).
On any real computer, always possible as a real computer has a finite number
of states N, and will either halt in less than N cycles or never halt.