Wildcard for consecutive images

I am trying to animate a series of jpg files using avconv. Based on numerous examples, I am trying to use% d.jpg to specify files. Or% 05d.jpg. However, I get:

avconv -i %d.jpg a.avi
avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers built on Jun 12 2012 16:37:58 with gcc 4.6.3
%d.jpg: No such file or directory

The following is a list of my directories:

10380.jpg
10390.jpg
10400.jpg
1040.jpg
10410.jpg
10420.jpg
10430.jpg
10440.jpg

There are jpegs from 00000.jpg to 14400.jpg

I really don't understand this wildcard system, but this is what the examples have.

(note: I marked it with ffmpeg because the tag for avconv does not exist and avconv replaces ffmpeg)

Update I am updating the question based on the answer below on @ av501.

To begin with, I have a list of png files with a sequential order of 10. They have text preceding a 5-digit integer. For instance:

SkinMattekNutrient_py_00000.png
SkinMattekNutrient_py_00010.png
SkinMattekNutrient_py_00020.png
...
SkinMattekNutrient_py_10440.png

How can I convert them to jpg? I tried

convert ...
SkinMattekNutrient_py_%05d.png %05d.jpg

and

convert ...
SkinMattekNutrient_py_%5d.png %5d.jpg

But I get:

convert SkinMattekNutrient_py_%05d.png %05d.jpg
convert: missing an image filename `%05d.jpg' @ error/convert.c/ConvertImageCommand/3011.
+5
2

% 5d . , , .

% 5d 5- . [ 1040.jpg], . 00000.jpg 00001.jpg. , 10.

10, % d50.jpg [ 1040.jpg]

[ ffmpeg -i% 5d.jpg out.avi ffmpeg -i% 5d0.jpg out.avi]

+4

Bash:

for f in *.png; do ffmpeg -i "$f" "${f%.png}.jpg"; done

, , , . :

for f in *.png; do convert "$f" "${f%.png}.jpg"; done
+4

All Articles