[FFmpeg-user] filter pipeline 'PTS' -- int64_t?

Paul B Mahol onemda at gmail.com
Tue Mar 2 22:13:29 EET 2021

On Tue, Mar 2, 2021 at 8:59 PM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> Am Di., 2. März 2021 um 01:47 Uhr schrieb Mark Filipak (ffmpeg)
> <markfilipak at bog.us>:
> >
> > The ffmpeg filter pipeline assigns a 'PTS' to each frame,
> > frame by frame.
> This may not be completely unreasonable but some
> comments are still necessary:
> The sentence sounds to me as if the the filter pipeline always
> assigns timestamps to frames, but this is neither true (many
> filters do not care about timestamps and you do not have to
> insert a filter which does) nor does it make the filter pipeline
> special: Timestamps often come from the demuxer and / or
> the decoder and may or may not change in the filterchain
> (and - as I believe you realized by now - because of the
> chosen output format; and also the chosen encoder - for
> which you did not post a question yet).
> Frames may not have a timestamp assigned - you posted
> the relevant part of the documentation.
> Concerning some of your other comments:
> The timestamps in MPEG streams may be negative.
> There is no AVFrac in the (current) codebase.
Funny how he look at ultra old svn code dump, good luck with that,

How he even managed to find links to svn stuff ....

> Carl Eugen
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