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I was going through the steps listed in:

How can I combine 30,000 images into a timelapse movie?

When I run the mencoder command, I get an error saying:

[mf] search expr: *.jpg
============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.

Anyone help me out with why it isn't recognizing the .jpg files?

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What is the actual command you are running? – Majenko Apr 25 '11 at 18:50
Have you tried ffmpeg? I just blogged about this (although I didn't test with that many input files): – dSebastien Jan 25 '15 at 17:06

You could try out a program called 'chronolapse' which worked great for me when combining 80k+ images.

It's free and open source. You can get it here:

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