Old 16th May 2001, 19:37   #1
zangpo
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Couldn't find a solution in the voluminous archives. The files are in their original location upon download-- I haven't changed anything. They are saved as Winamp media files and are of a size to be expected from an mp3. The File info in Winamp says:

Size: 26546594 bytes
Header found at: 2713 bytes
Length: 1327 seconds
MPEG 2.0 layer 2
160kbit, 36870 frames
16000Hz Stereo
CRCs: Yes
Copyrighted: No
Original: No
Emphasis: CITT j.17

or:

Size: 7694242 bytes
Header found at: 4266 bytes
Length: 192 seconds
MPEG 1.0 layer 1
320kbit, 10686 frames
32000Hz Stereo
CRCs: No
Copyrighted: No
Original: No
Emphasis: None

Now, it says length 192 seconds in the file info, but in the winamp display there are question marks on the bottom right where there are normally time displays, and in the upper left elapsed time box, there is nothing. Needless to say, Winamp won't play the files. I can't understand why it would recognize the length of the file and all this information but not access and play the data.

Did the guy save these funny? Can I fix it and retrieve the data somehow?
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Old 16th May 2001, 22:08   #2
DJ Egg
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Judging from the info given, these aren't mp3's.
MP3's are MPEG Layer 3.
Therefore, the 1st file is a (very large) MP2, and the 2nd is an MP1
However, Winamp supports these older formats too.
Make sure that it is setup correctly:
Prefs -> Input -> MPEG Audio Decoder -> config -> General tab
Extension list : MP3;MP2;MP1 (default)

Do these files have the correct extensions? (when viewed in Explorer window)
Do they play ok in other players? (eg. WindowsMediaPlayer)

A useful (freeware) troubleshooting tool you can try is MP3 Utility
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Old 16th May 2001, 23:03   #3
zangpo
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In explorer the icons are winamp, the text under the icon does not include .mp3; however when I right click on it and view properties, MSDOS name ends with .mp3. Nonetheless, I tried renaming them .mp2 and .mp1 and still no go. Windows Media Player says file format not supported. What are these beasts?

There were a few from this site that did play, for instance this one:

Size: 15824553 bytes
Header found at: 0 bytes
Length: 659 seconds
MPEG 1.0 layer 3
192kbit, 50557 frames
44100Hz Stereo
CRCs: No
Copyrighted: No
Original: Yes
Emphasis: None

The only differences I have seen between these and the others are that sometimes copyrighted and original are sometimes yes. These are uncopyrighted live shows, so that shouldn't be a big deal. They also have header 0 bytes, whereas the others have 2713 etc. I don't even know if that is track info or what.

I don't get it. I'll see about the utility, though.
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Old 17th May 2001, 00:22   #4
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My Computer -> View -> Folder Options -> View
Uncheck "Hide file extensions for known file types" so that extensions are always shown (except for shortcut .lnk files). Although it seems hardly relevant since we now know what those files of yours are.
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Old 17th May 2001, 00:46   #5
DJ Egg
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Well it is relevant, because with known file extensions hidden, the extension remains the same when you rename a file. Basically, these files will now be called something like: title.mp2.mp3
You can also control whether an extension is viewed or not via:
Folder Options -> File Types tab -> hi-lite individual filetype -> edit:
Check/uncheck "Always show extension"

btw, the header is where the ID3 tag info is stored, but is usually found at 0 bytes for ID3v1 tags, and somewhere between 1 - 3kb for ID3v2
But I didn't think that MP1 & MP2 supported the use of ID3v2 tags?
Is there any tag info displayed in the file info box? (eg. artist/title/etc)

As you can see, your 3rd example says MPEG Layer 3.
Therefore this one is definitely an MP3.

Anyway, let us know how ya get on!
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Old 17th May 2001, 06:48   #6
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Hi zangpo,

That happened to me once... rename the files to .zip and try to unzip them.

Hope that helps
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Old 17th May 2001, 13:57   #7
zangpo
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The utility showed these errors:

C:\WINDOWS\Desktop\Downloads\ph99-09-11d3t03.mp3 - Error: Can't locate first frame header within 5,000 bytes of beginning of file.
C:\WINDOWS\Desktop\Downloads\ph99-09-11d3t04.mp3 - Error: First sync error at approx. 0:00 (0% through).

Tried Winzip and it said that it wasn't a true archive file or something to that effect. Renamed the actual file extension as .mp1 or the other one as .mp2 but that didn't help. No, there is nothing in the tag info.

Is this a lost cause with these headers? What does sync mean in this context?
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Old 17th May 2001, 15:00   #8
war4peace
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Try Windows Media Player.
On my opinion, those are video files .
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Old 17th May 2001, 19:56   #9
DJ Egg
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war4peace could have a highly valid point there!
Of course, there's definitely the chance that these are MPEG videos with the MPG extension. Though surely you would've known that you were downloading either an audio or video file?
Yes, see if WMP can play them & let us know ASAP. I'm intrigued!
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Old 17th May 2001, 20:08   #10
zangpo
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I'm sure these are audio files, some of them are just 20 min. long. I tried it in WMP and it said file type not supported, and gave me a list. I don't get it.


Any idea what these error messages from the mp3 utility mean?

Error: Can't locate first frame header within 5,000 bytes of beginning of file.

Error: First sync error at approx. 0:00 (0% through).

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Old 17th May 2001, 21:10   #11
DJ Egg
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What extensions have you got them set to at the mo?
If they're wrong then most players will get confused & not know what codecs/filters/plugins to use.
However, Winamp's MPEG Audio Decoder should take care of unknown file types, according to the setting in: Prefs -> Options (default ext for unknown filetypes = mp3).
Maybe try totally removing the extension for now & then try playing in Winamp.
You could even try changing the extension to some made-up ext, eg. ZZZ
Then goto: Prefs -> Input -> MPEG Audio Decoder -> config:
Add ZZZ to extensions list (remember to seperate each entry with a semicolon!)

btw, those 2 errors are explained in detail in the readme.txt file that came with mp3utility.
The first error basically means that the file has no header. Headers determine the extension & type of file. This suggests that the format is either unknown, has no extension, is corrupt, or wasn't encoded correctly.
As for the 2nd synchronization error . . . well . . . read the text file!

Bear in mind that there's always the possibility that these files are totally corrupted, and maybe even beyond repair ?!?!

Can you tell us where you got these files from in the first place?

Is there any way of finding out what was used to encode them?
I'm suspecting that maybe it was MusicMatch? (p.o.s.)
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Old 18th May 2001, 06:35   #12
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Maybe they're Wrapster files?

I too would be interested in knowing where you got these files.

-ME
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Old 18th May 2001, 13:32   #13
zangpo
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http://mp3.tyedye.com/phish/99.09.11-George-WA/

Lot of good shows there that I haven't seen anywhere else. It is a shame that of the two shows that I've tried, about 30% of each show is unplayable. Two disks out of three isn't bad, though.

The mp3 utility suggests that there's corruption in the header file, and that it can be fixed by correcting the currupted data with a binary editor(?) which is beyond me, so that's that.

Thanks a lot for your help.
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Old 19th May 2001, 06:27   #14
ME
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Went to the URL provided and downloaded the smallest file named ph99-09-11d1t07.mp3 which was 6MB or 6,293,838 bytes. Afterwards, it played fine in WinAMP v2.72. There are no ID tags within this file.

My guess is that you have corrupted files. Either because of the way they were downloaded or that the files you picked (being different then the one I tested) are bad.

-=ME
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