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I am trying to convert multiple images (.png) into a video mp4. I am using avconv, I already made it work before but I can't remember how ... I am using ubuntu 14.04, I had the avconv 9.something, I just updated it to the version 11.6 by downloading it on the libav website.

I have around 70 png that I want to convert into a mp4. I am typing the following command:

avconv -r 10  -i implant%4d.png -b:v 1000k test.mp4

or

avconv -r 10 -start_number 1 -stats -i "implant%4d.png" -b:v 1000k test.mp4

the video in output as the good number of frame, but all of them are the first image. the output on the terminal is the following:

avconv version 11.6, Copyright (c) 2000-2014 the Libav developers
  built on Apr 28 2016 08:46:48 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
Input #0, image2, from 'implant%4d.png':
  Duration: 00:00:02.88, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: png, rgb24, 1350x982, 25 fps, 25 tbn
File 'test.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'test.mp4':
  Metadata:
    encoder         : Lavf56.1.0
    Stream #0.0: Video: mpeg4, yuv420p, 1350x982, q=2-31, 1000 kb/s, 10  fps, 10 tbn, 10 tbc
   Metadata:
      encoder         : Lavc56.1.0 mpeg4
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> mpeg4 (native))
Press ctrl-c to stop encoding
frame=   72 fps= 26 q=2.0 Lsize=     362kB time=7.10 bitrate= 417.4kbits/s 
0

You need to change the wildcard.

From implant%4d.png to implant%04d.png

Works for me.

  • implant%4d.png means implant1.png to implant9999.png, while implant%04d.png means implant0001.png to implant9999.png (note the noughts) – v010dya Apr 9 at 4:17

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