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#1
Posted to rec.audio.pro
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salvage corrupt mp3
Hello Everybody,
I recently attempted to record a 12 hour DJ set with Sound Forge. While exporting to mp3 sound forge crashed leaving an mp3 on the desktop that was 4.7GB in size. The mp3 is not recognized by WMP, Winamp, VLC, MPlayer, and Audacity thinks it can parse it but it just infinitely increments the time to complete. I opened the file up in a hex editor and it has an ID3 tag and something that looks like a header. Unfortunately I am not familiar enough with the binary mp3 format or header to determine if everything looks good. My hope is that some hardcore audiophile or a talented programmer will be able to immediately see if there is a major issue: https://spunts.com/beginning-of-corrupt.mp3 All of the DJs would like copies of the sets and it was a really wicked party. Any insight would be greatly appreciated. Regards, Gardner |
#2
Posted to rec.audio.pro
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salvage corrupt mp3
For the most part, it's a PCM (.wav) file.
There is nothing in there that indicates it's mp3; the ID3 block doesn't make it mp3. At 0x400 you have what sort of looks like the start of a riff file but it's messed up. The data is PCM, or could be, so get something like sox, and a binary file editor, and a few tutorials on PCM and .wav files, and have at it. You should be able to hear if the data is also messed up with just a little bit of work. What you COULD do is find a PCM player that plays raw PCM, and just feed it some of the file. Not many apps will play 4.7 GB files (seems odd unless you were recording directly to a DVD), so cut out a few MB and play that. The initial part of the file will play as noise but if the rest is good, it will sound normal. From the looks it's 44100 Hz, 16-bit, 2 channel, intel-byte order (low byte high byte). The start of each sample is aligned okay if you want to start play at the beginning. -- 40th Floor - Software @ http://40th.com/ phantasm.40th.com - The finest sound in the world |
#3
Posted to rec.audio.pro
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salvage corrupt mp3
On Jul 6, 7:00*am, Gardner wrote:
Hello Everybody, * I recently attempted to record a 12 hour DJ set with Sound Forge. While exporting to mp3 sound forge crashed leaving an mp3 on the desktop that was 4.7GB in size. The mp3 is not recognized by WMP, Winamp, VLC, MPlayer, and Audacity thinks it can parse it but it just infinitely increments the time to complete. I opened the file up in a hex editor and it has an ID3 tag and something that looks like a header. Unfortunately I am not familiar enough with the binary mp3 format or header to determine if everything looks good. My hope is that some hardcore audiophile or a talented programmer will be able to immediately see if there is a major issue:https://spunts.com/beginning-of-corrupt.mp3 All of the DJs would like copies of the sets and it was a really wicked party. Any insight would be greatly appreciated. Regards, * Gardner I have had sound file that would not play or xfer on my WIN XP machine from my Zoom H2. I then connected to WIN ME, ran CHKDSK and file got corrected. Maybe I could do this on WIN XP, gotta find the CHKDSK program. -- See new Amero corrency at http://Amero.PhotosNYC.com |
#5
Posted to rec.audio.pro
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salvage corrupt mp3
"Gardner" wrote in message ... Hello Everybody, I recently attempted to record a 12 hour DJ set with Sound Forge. While exporting to mp3 sound forge crashed leaving an mp3 on the desktop that was 4.7GB in size. The mp3 is not recognized ... .... Regards, Gardner I am not familiar with Sound Forge. Sound Forge was recording this session somewhere in some format. If it was a temporary file it would not have deleted it until shutdown. It did not shutdown, it crashed. Do you have a massive temporary file somewhere? If such an event occurs the one thing not to do is to re-open the original app that just crashed, because it is possible that the first thing it is going to do is overwrite its old temporary file with a new empty one. This behaviour varies from program to program. Some of the "better worser" ones know they fail and are prepared to recover. If you do not know that you have one of those programs the first thing to do to save vital data is copy and rename the temporary file. |
#6
Posted to rec.audio.pro
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salvage corrupt mp3
On Sun, 6 Jul 2008 04:00:46 -0700 (PDT), Gardner
wrote: Hello Everybody, I recently attempted to record a 12 hour DJ set with Sound Forge. While exporting to mp3 sound forge crashed leaving an mp3 on the desktop that was 4.7GB in size. The mp3 is not recognized by WMP, Winamp, VLC, MPlayer, and Audacity thinks it can parse it but it just infinitely increments the time to complete. I opened the file up in a hex editor and it has an ID3 tag and something that looks like a header. Unfortunately I am not familiar enough with the binary mp3 format or header to determine if everything looks good. My hope is that some hardcore audiophile or a talented programmer will be able to immediately see if there is a major issue: https://spunts.com/beginning-of-corrupt.mp3 All of the DJs would like copies of the sets and it was a really wicked party. Any insight would be greatly appreciated. It looks like a header and then PCM data (about 0.01 seconds worth of header and 0.02 seconds worth of "audio" - at least it's a reasonably flat straight line with a little noise in it). As a first approximation you could copy it (to protect and keep the original) and rename it to a .wav file and see if you can play that. If not, open it as "raw PCM", 16-bit stereo 44kHz and see if that is playable. That's how I opened the file in Cool Edit 2000 (okay, so I've got really old software). Regards, Gardner |
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