Post by masonc
Can renaming a file change its format?
Changing file names in Win7pro caused my mp3 player
to reject them as "format not correct"
Files transfer normally otherwise.
Computer disks NTFC. Player is FAT32, internal and card.
I suppose it depends on how "sophisticated" the player is.
There are two ways to identify files. You can "trust" the
file extension and then try and parse the 4CC codes in the file
and play it.
Or, you can ignore the file extension and "sniff" the file
for characteristic identification strings.
If I wanted a general purpose tool to offer opinions on
files, I might try ffmpeg/ffprobe/ffplay package. While I
could try the bash shell "file" command, it might not offer
the level of detail that ffmpeg could.
Click the ugly buttons on the web page, to select:
Release build 4.0
Windows 32 or Windows 64, as you see fit
Linking: Static (no separate DLLs needed)
Then click the blue Download Build button.
If you had an older platform, you might try this one.
When I tried a nightly build several months ago, it wasn't
linked properly and the static build was internally missing
some DLLs. The release build (4.0), one would hope it's
tested well enough to run on your computer. Then, feed
the program a file, and check the Command Prompt output
text for details about what kind of file it is.
If it really is a .mp3, put the .mp3 extension back on it.
Then see if your player has an appetite.