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 > --- > 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