From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] avformat/img2dec: Option to play sequence backwards
Date: Sat, 12 Feb 2022 20:56:47 +0100
Message-ID: <20220212195647.GC2829255@pb2> (raw)
In-Reply-To: <20220212115709.45936-1-sergio.acereda@gmail.com>
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On Sat, Feb 12, 2022 at 12:57:11PM +0100, Sergio Acereda wrote:
> This patch should allow playing an image sequence in backwards direction, without needing to apply a reverse filter.
>
> ffmpeg -i sequence%05d.png forward.mkv
> ffmpeg -reverse 1 -i sequence%05d.png backward.mkv
>
> Signed-off-by: Sergio Acereda <sergio.acereda@gmail.com>
> ---
> libavformat/img2.h | 1 +
> libavformat/img2dec.c | 40 +++++++++++++++++++++++++++-------------
> 2 files changed, 28 insertions(+), 13 deletions(-)
seems to break/change -loop
ffmpeg -f image2 -loop 1 -framerate 2 -i tickets/3329/arrow_%1d.png -frames 1000 -vf fps=fps=25 -omit_video_pes_length 0 file-3329.ts
the output filesize changes by more than 10x
thx
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Asymptotically faster algorithms should always be preferred if you have
asymptotical amounts of data
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next prev parent reply other threads:[~2022-02-12 19:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-12 11:57 Sergio Acereda
2022-02-12 19:56 ` Michael Niedermayer [this message]
2022-02-13 11:36 ` Sergio Acereda
2022-02-13 11:53 ` Michael Niedermayer
-- strict thread matches above, loose matches on Subject: below --
2022-02-11 22:08 Sergio Acereda
2022-02-10 9:31 Sergio Acereda
2022-02-10 10:37 ` Gyan Doshi
2022-02-10 12:59 ` Sergio Acereda
2022-02-10 20:50 ` Sergio Acereda
2022-02-11 16:45 ` Sergio Acereda
2022-02-11 17:19 ` Marvin Scholz
2022-02-11 19:39 ` Sergio Acereda
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