Combining multiple .bmp files into a .mp4 file with ffmpeg

Question

I want to combine all these .bmp files into one movie.mp4.I am using ffmpeg.

This command produces a movie of only 0.04 seconds:

$ ffmpeg -i f%05d.bmp -c:v libx264 -r 30 -pix_fmt yuv420p movie.mp4

It should pick all the files up no? I don't know what I am doing wrong and can't find a solution.

This command I tried from here says it can't find file with path 'f%05d.bmp' even though the above command can?

$ ffmpeg -r 60 -f image2 -s 1920x1080 -start_number 1 -i f%05d.bmp -vframes 1759 -vcodec libx264 -crf 25  -pix_fmt yuv420p test.mp4

Answer 1

I think files should have consecutive numbers, otherwise they are treated separately (hence you get a 0.04 sec movie - just one frame). Few days ago I needed something similar (although not for ffmpeg but to import files into DaVinci Resolve) and I wrote a simple python script:

import os

filename="whatever{0:05d}.png"
destno = 1

for i in range(0, 10000):
   src = filename.format(i)
   if os.path.isfile(src):
      dst=filename.format(destno)
      destno+=1
      os.rename(src, dst)
      print "renamed {0:s} to {1:s}".format(src, dst)

Lousy, but worked.

Answer 2

Maybe you could change the globbing to get all the .bmp files:

ffmpeg -r 60 -f image2 -s 1920x1080 -start_number 1 -i %*.bmp -vframes 1759 -vcodec libx264 -crf 25  -pix_fmt yuv420p test.mp4