I have been using ffmpeg to convert a sequence of jpegs to a video using the following syntax
ffmpeg -f image2 -i frame%d.jpg -vcodec mpeg4 -b 800k video.avi
it works a treat, however if the filenames dont start at 0 and then pursue in accending order I get weird results. for example the first file in the directory is frame1 and last file is fram 61.I should point out that im always using a list of jpegs which accend in incrental order. for example a list of files called frame1, fram2, fram3 etc.
the following works fine
frame1.jpg to frame9.jpg
frame1.jpg to frame10.jpg
frame2.jpg to frame8.jpg
frame2.jpg to frame10.jpg
frame2.jpg to frame11.jpg
frame2.jpg to frame17.jpg
frame2.jpg to frame20.jpg
frame2.jpg to frame30.jpg
frame2.jpg to frame61.jpg
the following doesnt work
26 to 57 fail
11 to 61 fail
10 to 61 fail
20 to 61 fail
24 to 61 fail
Can I modify the arguments for ffmpeg so that it will make the video regardless of the filenames? (frame%d)
You could rename all jpeg files so the numbering always starts at zero and there are no gaps.