Taperssection.com
Gear / Technical Help => Ask The Tapers => Topic started by: capnhook on August 03, 2019, 12:16:40 PM
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I sent my girlfriend apprentice taper out to a show last evening, and she got a SBD copy on USB from one of those niiiice X32 Behringer mixers. Great.
Problem is, the sound engineer probably didn't finalize the .wav file and end the recording gracefully. I'd guess he just pulled the USB out before hitting "STOP".
I have another one of those "zero byte .wav files".
billydee here on ts gave me something called "Sandisk RescuePRO Deluxe" a while ago, when I had this same problem.
Went to use it today, but the license expired.
I could probably start with "chkdsk", but there might be a better solution now?
Looking for you'all's suggestions..
Oh and by the way, Brenda got AUD, too. Good job baby, first time out.
Who says we're a dying breed? :love:
OH, and SHOUTOUT to billydee, live webcasting this weekend..
Rhythms on the Rio festival in South Fork CO, starting today at 12:15pm MDT.
http://mixlr.com/billydee/events/
***SATURDAY August 3rd***
- 12:15pm Shaky Hand String Band
- 1:45pm Woodbelly
- 3:15pm Pixie and the Partygrass Boys
- 5:00pm Larry Keel Experience (w Jeremy Garrett and Kyle Tuttle)
- 6:30pm The Travelin McCoury's
- 7:45pm The Grateful Ball (w The Travelin McCoury's & Friends)
- 9:15pm Fruition
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Been there; done that. I pass this along to anyone dealing with a Zero byte wav file issue. Totally works:
https://www.youtube.com/watch?v=lw5zBkoWAg8
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!!
+T buckster
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I've had some success by just opening the file in CD Wave Editor and when it asks if you want to overwrite the corrupt header with a new one you just click yes and save the file.
doesn't always work but when it does it's super easy.
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Yep, when the video talked about using VLC player, I took a left turn and opened the recovered file in CD Wave, instead.
Saved it as a 24 bit 48kHz .wav perfectly.
Thanks for the help, I'm bookmarking this.
OH, and apologies our engineer last night. I guess 0 byte files happen on Behringer equipment, whether you are careful or not.
Learned something today.
TS rules. :cheers:
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Yep, when the video talked about using VLC player, I took a left turn and opened the recovered file in CD Wave, instead.
Saved it as a 24 bit 48kHz .wav perfectly.
That's good to know. VLC only saves as 16 bit 44.1.
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I was able to grab a sbd recording on my USB drive last night, but one of the two files is zero byte. Can anyone help with this? I'm on mac so this doesn't work.
This was on a Midas m32 btw
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In the future, if that CD Wave trick doesn't work search the board for fixwav. It is a homegrown utility compiled by a user here. You just need to know the resolution of the recording and how many channels.
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First night back in action and despite my best efforts I have a zero byte file issue.
Using a recovery program I managed to get CHK files of the sizes the missing files should be.
They are on my gdrive for anyone who might be able to help
the bizare thing is as soon as I opened the files foobar started playing them fine, I tried to copy off the sd card and then shit went haywire. 1/2 of the files copied perfectly no issues but the larger portions are whats missing.
https://drive.google.com/drive/folders/1MTUk69_buDvxPhfAEpBiezTaTiV5mTJF?usp=sharing
I've tried a bunch of stuff in this thread but no dice thus far and Im afraid in my upset state I might make a mistake further lessening my chance of recovery.
I've tried simply renaming the chk files to wav and that works but the files arent playable
Please any tech guys have mercy on my poor soul and help restore these.
If anyone can help i'm happy to make it worth your while.
What were the original bit and sample rate values of your recording?
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I was able to grab a sbd recording on my USB drive last night, but one of the two files is zero byte. Can anyone help with this? I'm on mac so this doesn't work.
This was on a Midas m32 btw
I can try the cd wave thing....
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Got to deal with this. As the second set of the Bruce Cockburn show ended I see my recorder has a file error message on the screen. I checked midway through the set and everything was fine. 4GB left on the card so no idea how or why it happened.
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I have had great success with the free version of ZAR, but it only runs on windows
https://www.z-a-recovery.com/download.aspx
Suggest using a machine with windows to do this...
Or here's the Lexar Data Safe recovery software for either Mac or PC
https://www.lexar.com/download_cat/recovery_tool-en-gb/
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No luck so far. The fixwav program which I used years ago doesn't run under Windows 10.
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No luck so far. The fixwav program which I used years ago doesn't run under Windows 10.
So no luck with the steps enumerated in that YouTube video posted above?? It's a little long winded, but the steps are pretty straight forward. I have them written down and just recently had to fix a zero byte file and did so successfully on Win 10. One substitution in the steps is to use CD Wave Editor instead of VLC Media Player.
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Tried that and a few other things but no luck. Luckily another source but disappointing.
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If there is a file on the card back it up and host it for others to try.
If there is no file on the card then try Recuva. https://www.ccleaner.com/recuva
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Tried Recuva and shows 0 byte file but nothing more. Only files on the card are the other Wav files. Not finding anything hidden.
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Tried Recuva and shows 0 byte file but nothing more. Only files on the card are the other Wav files. Not finding anything hidden.
Sounds like the recorder errored out while recording, most likely shortly after starting. Boo, hiss.
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I checked about 45 minutes into the set and the red record light was on and 20 minutes later it ended with red light flashing and a file error message. Couldn't do anything but turn off recorder by removing batteries.
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Can you create an img file of your SD card (e.g. using a low level copy tool like dd on Linux/UNIX) and send me the file along with the information about the original bit depth, sample rate and the number of channels? I've tried out a couple of different tools on Linux and Windows recently and chances are that at least one of them might work.
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Can you create an img file of your SD card (e.g. using a low level copy tool like dd on Linux/UNIX) and send me the file along with the information about the original bit depth, sample rate and the number of channels? I've tried out a couple of different tools on Linux and Windows recently and chances are that at least one of them might work.
Sure. Thx. Will do that tomorrow.
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@daspy:
After having fixed the PCM-WAV header, it seems that after 4'55'' there is data corruption.
In other words, playback isn't stalling (as originally suspected by me) but the recorder appears to have recorded the same sample multiple times to the SD card. Which would explain why the file is so big (4.2 GiB).
It's exactly the same picture when I try to load the RAW file into Samplitude.
Cf. the screenshots below. Do you still want me to send you the WAV or FLAC file with the fixed header even though the problem is a lot more fundamental?
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It happened again at Railroad Earth at Brooklyn Bowl. I have cloned the SD card but since I am on the road I will use other recorder and card.
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I reordered opener using new card. No issues. At end of first set I tried to stop recorder and instead it went into pause and only way to stop it was to pull batteries. 2nd set ran fine. I have cloned card to a new SD card so they match. Just need to figure best way to do this or ask for help from a volunteer. Anyone feel confident?.
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Yep, when the video talked about using VLC player, I took a left turn and opened the recovered file in CD Wave, instead.
Saved it as a 24 bit 48kHz .wav perfectly.
Thanks for the help, I'm bookmarking this.
OH, and apologies our engineer last night. I guess 0 byte files happen on Behringer equipment, whether you are careful or not.
Learned something today.
TS rules. :cheers:
Very slick. Marking this. Thax
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I wonder if Spy's problem is a defective DR2d or a defective card. Sounds more like a recorder issue.
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Maybe. Both will be retired. Not having luck with the clone of the card but still have the card in recorder. Guess I need to keep trying once home.
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I recently used AI to create a windows batch file tool that repairs FLAC headers. I'm sure it's easy to make one to fix the wav file too. Can you hightail the image file to me?
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I recently used AI to create a windows batch file tool that repairs FLAC headers. I'm sure it's easy to make one to fix the wav file too. Can you hightail the image file to me?
will do
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I recently used AI to create a windows batch file tool that repairs FLAC headers. I'm sure it's easy to make one to fix the wav file too. Can you hightail the image file to me?
will do
I took some time to whack at this file. I threw AI at it and developed a batch file to run it through several levels of repair using FFMPEG, but nothing worked.
I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
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I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
I think this is what you are referencing - fixwav.
https://spaces.hightail.com/receive/GgFYcheDWp
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I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
I think this is what you are referencing - fixwav.
https://spaces.hightail.com/receive/GgFYcheDWp
Yes, I was, and I found it afterward, but I cannot get it to run on my Windows 10 machine. I wanted to see if I could get AI to update the code, but I do not really know I am doing. LOL
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I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
I think this is what you are referencing - fixwav.
https://spaces.hightail.com/receive/GgFYcheDWp
I think this tool will only repair a corrupt header and not magically recover your lost samples. It means you must have a wav file with proper length to begin with. (E.g 1 hour of 48kHz 24bit stereo audio takes ~1GB.) If your OS (windows, whatever) reports that the file is 0 bytes long, this tool won't help you...
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I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
I think this is what you are referencing - fixwav.
https://spaces.hightail.com/receive/GgFYcheDWp
Yes, I was, and I found it afterward, but I cannot get it to run on my Windows 10 machine. I wanted to see if I could get AI to update the code, but I do not really know I am doing. LOL
Runs fine from a command prompt on my Win10 machine.
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I thought there was a tool here somewhere that Gordon Gidluck posted that repaired 0-byte files, which I thought I shared on FB, but it was a file-splitting command instead. You used to type in how many channels, bit depth and sample rate and it would append -fixed at the end of the repaired file. I will go dig and see what I can come up with.
I think this is what you are referencing - fixwav.
https://spaces.hightail.com/receive/GgFYcheDWp
Yes, I was, and I found it afterward, but I cannot get it to run on my Windows 10 machine. I wanted to see if I could get AI to update the code, but I do not really know I am doing. LOL
Runs fine from a command prompt on my Win10 machine.
card still sitting in recorder in case someone else wants to try. Advantage of having a drawer full of Tascams.
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The general rules for this are:
1) if the file is seemingly not there you have to run a utility like CHKDSK to convert the orphaned data into actual files. (as in the Youtube video)
2) at that point if the files cannot be played you will have to correct the WAV header counts. A few solutions to this have been posted including a command line utility by me. As well you might import as raw data into a DAW.
3) if part of the file has a good recording and then it just loops the same segment over and over there isn't anything you can do about that.
Gordon
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The general rules for this are:
1) if the file is seemingly not there you have to run a utility like CHKDSK to convert the orphaned data into actual files. (as in the Youtube video)
2) at that point if the files cannot be played you will have to correct the WAV header counts. A few solutions to this have been posted including a command line utility by me. As well you might import as raw data into a DAW.
3) if part of the file has a good recording and then it just loops the same segment over and over there isn't anything you can do about that.
Gordon
IMHO, the very very very first step, before doing anything else, is creating a disk image of the card/recorder memory. This way you can always access the original content of the card and try different approaches. Tools like CHKDSK (or anything else that writes to the card) may salvage your data but also might as well destroy your precious samples.
So here's what I'd do:
1) Create a raw disk image (*.bin). Various open source or freeware tools available to do so, depending on your OS (Windows, Linux, Mac)
2) Open the image as raw audio with your DAW. Hopefully you know the sample rate, format (16/24/32 bit) and number of channels (likely stereo, so 2). You may need to play with the byte offset when opening, depending on the format. E.g. for 16 bit, you may need to try 0 and 1. With 24bit, you may need to try 0, 1 and 2. With 32bit, you may need to try 0,1,2 and 3.
After opening the image, there should be regions with audible data, hopefully containing the audio you're looking for. If not, then the samples simply aren't there. No other tool (CHKDISK, whatever) will magically recreate your audio.
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card still sitting in recorder in case someone else wants to try. Advantage of having a drawer full of Tascams.
I'd be happy to try to help you out. Just PM me if you want to arrange something.
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I get 0 files from the board if the thumb is pulled too early or for whatever reason & this has always recovered it.
On PC open Command Prompt - Type CHKDSK then the letter of your drive with the 0 File then /F (find)
Take found file rename it .WAV
Open VLC Click Media & open Covert / Save - Add File & then Convert & Save!
CHKDSK (DRIVE): (SPACE) /F