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How do I create an empty mp3 or jpg of a specific size?
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Fresh-Faced Recruit
Join Date: Feb 2011
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Offline
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Hi All,
I am new to the forum so apologies if this has already been answered. I couldn't find an answer on Google or here :-(
I have a need to generate either an mp3 or jpg file of a specific size (250/500/1000 MB) for test purposes. Unfortunately I have no idea how to do this easily.
If anyone can offer I way to do this without additional software (maybe using the command line and then adding some kind of header to the empty file to fool 'whatever' into thinking the file is actually an mp3 or jpg?) it would be greatly appreciated!
I do know how to generate empty files but they are just that, empty - changing the file extension is not good enough for my purpose.
Any help appreciated and thanks for reading!
Steven.
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Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
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Offline
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What are you trying to do here?
Does the file need to actually be valid or just have the right header and size?
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Mac Elite
Join Date: Jan 2000
Location: Columbus, OH
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Um, 250/500/1000 MB are not empty files.
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HyperNova Software, LLC
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Clinically Insane
Join Date: Mar 2001
Location: yes
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It is possible to create an file of a particular size that contains nothing but zeros using the Unix tool "dd". This file of course would not be a file that would be readable by a program designed to handle files of that type, but it would give you a file of a particular size you can give whatever name and extension you want. Is this what you had in mind?
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Clinically Insane
Join Date: Jun 2001
Location: planning a comeback !
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Originally Posted by besson3c 
It is possible to create an file of a particular size that contains nothing but zeros using the Unix tool "dd". This file of course would not be a file that would be readable by a program designed to handle files of that type, but it would give you a file of a particular size you can give whatever name and extension you want. Is this what you had in mind?
No. He wrote:
I do know how to generate empty files but they are just that, empty - changing the file extension is not good enough for my purpose.
-t
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