I am trying to make a bunch of png's into a video using avconv, the png's are numbered like filename_<number> so I usually just use the command:

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

I now want to make a video from a subset of the files filename_8 - filename_50 lets say, so I've copied these files into a new directory and tried the same command but now I get the error:

filename_%d.png: No such file or directory

I assume this is because the numbering doesn't start from 1?

How can I achieve this?

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