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Topic: fix invalid jpg extension (Read 454 times) previous topic - next topic
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fix invalid jpg extension

This might be old news, but I discovered a utility to add the proper extension to files automatically.
I had quite a few album art downloads that were labeled *.jpg, but are actually *.png .
This utility can fix that:  TrID - File Identifier
I had some trouble doing a batch conversion at first, but I found the trick.
Use "dir /b /s > filename.txt" to create a file with all that you want to check/convert, then do "type myfilelist.txt | trid -ce -@"
(You can use wildcards with the dir command, I looked for "folder.jpg".)
This is helpful if you display album art and it is sometimes not found because of the improper file extension.

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Re: fix invalid jpg extension

Reply #1 –
Quote from: chamber32 on
Use "dir /b /s > filename.txt" to create a file with all that you want to check/convert, then do "type myfilelist.txt | trid -ce -@"
(You can use wildcards with the dir command, I looked for "folder.jpg".)
It's not necessary to use an intermediate file - the information you linked to already provides the solution:

Quote
TrID can get a file list from stdin, with the -@ switch.
So it's possible to work on an entire folder tree, or a particular subset of files, just using the output of some other command through a pipe. Something like:

Code: [Select]
C:\TrID>dir d:\recovered_drive /s /b | trid -ce -@

I've not tried it, but it would be more conventional to do something like:
Code: [Select]
for /r %g in (<filespec>) do trid -ce %g

/r specifies recurse subfolders; change % to %% if putting this line into a .bat.
It's your privilege to disagree, but that doesn't make you right and me wrong.
 

Re: fix invalid jpg extension

Reply #2 –
Thanks, just tried the first method you mentioned, works great!
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