Help with .autosave recovery

So I have been working on a project for a few hours and saved periodically, however I went through about 30 minutes of recording and my PC crashed with a memory dump. Windows 10 . After a reboot, audacity offered to try and recover from an autosave. When i click on recover projects, I see an error that says:

“Audacity did not recognize the type of file “C:\Users\etc…autosave” try installing FFmpeg. For uncompressed files, also try File > Imports> Raw Data.”

Installing, FFmpeg didnt help. Here is what the log shows:

19:34:12: Audacity 2.1.3
19:34:12: Trying to load FFmpeg libraries...
19:34:12: mLibAVFormatPath ('C:\Program Files (x86)\FFmpeg for Audacity\avformat-55.dll') is not empty. Loading from it.
19:34:12: Looking up PATH environment variable...
19:34:12: PATH = 'C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files (x86)\Skype\Phone\;C:\Users\chadc\AppData\Local\Microsoft\WindowsApps;'
19:34:12: Checking that 'C:\Program Files (x86)\FFmpeg for Audacity' is in PATH...
19:34:12: Warning: FFmpeg directory 'C:\Program Files (x86)\FFmpeg for Audacity' is not in PATH.
19:34:12: Temporarily prepending ';C:\Program Files (x86)\FFmpeg for Audacity' to PATH...
19:34:12: Checking for monolithic avformat from 'C:\Program Files (x86)\FFmpeg for Audacity\avformat-55.dll'.
19:34:12: Error: Couldn't find symbol 'avutil_version' in a dynamic library (error 127: the specified procedure could not be found.)
19:34:12: Error: Couldn't find symbol 'avcodec_version' in a dynamic library (error 127: the specified procedure could not be found.)
19:34:12: avformat not monolithic
19:34:12: Loading avutil from 'avutil-52.dll'.
19:34:12: Loading avcodec from 'avcodec-55.dll'.
19:34:12: Loading avformat from 'C:\Program Files (x86)\FFmpeg for Audacity\avformat-55.dll'.
19:34:12: Returning PATH to previous setting...
19:34:12: Actual avutil path C:\Program Files (x86)\FFmpeg for Audacity\avutil-52.dll
19:34:12: Actual avcodec path C:\Program Files (x86)\FFmpeg for Audacity\avcodec-55.dll
19:34:12: Actual avformat path C:\Program Files (x86)\FFmpeg for Audacity\avformat-55.dll
19:34:12: Importing symbols...
19:34:12: All symbols loaded successfully. Initializing the library.
19:34:12: Retrieving FFmpeg library version numbers:
19:34:12:    AVCodec version 0x373466 - 55.52.102 (built against 0x373466 - 55.52.102)
19:34:12:    AVFormat version 0x372164 - 55.33.100 (built against 0x372164 - 55.33.100)
19:34:12:    AVUtil version 0x344264 - 52.66.100 (built against 0x344264 - 52.66.100)
19:34:12: FFmpeg libraries loaded successfully.
19:34:18: File name is C:\Users\chadc\AppData\Roaming\audacity\AutoSave\VSL Audio - 2017-04-08 17-08-19 N-185.autosave
19:34:18: Mime type is *
19:34:18: Opening with libsndfile
19:34:18: Opening with liboggvorbis
19:34:18: Opening with libflac
19:34:18: Opening with lof
19:34:18: Opening with libav
19:34:19: Error: FFmpeg : av_open_input_file() failed for file C:\Users\chadc\AppData\Roaming\audacity\AutoSave\VSL Audio - 2017-04-08 17-08-19 N-185.autosave
19:34:19: Error: Importer::Import: Opening failed.

If I go ahead and just open up the project file, I get my data without about 30 minutes from my last save file. I dug around in the audacity_audio directory of the project, and I was able to find all the .AU files that contain the missing audio files. I am able to open them up manually and hear the sound.

Is there a way to recover, and why do you think my .autosave isnt working? What should next steps be? Anything to point me in the right direction would be great. I was reading around the help wiki and it looks like I might be able to manually import each file, but not sure if that is the best way?

Thanks for the help!

You should have an AUP file and a _DATA folder of the same name.

If you open the AUP file in a text editor, is there anything in it?

That looks like a fairly standard dialog when Audacity doesn’t know what to do.

Were you saving periodic backups under different show names? Version1.aup, Version2.aup…etc?

Koz

If the computer crashes it is not an Audacity problem. It is probably a problem with the recording device on your computer. See this link about finding the cause:
FAQ:Errors - Audacity Manual.

What recording device are you using? If it’s the built-in sound device and you have a branded computer like Dell or Lenovo, go to the computer manufacturer’s site to look for the latest audio drivers for your computer model. Install the drivers (or reinstall the them if you already have them).

If you built the computer yourself, use CPU-Z or Belarc Advisor to find the motherboard number then go to the motherboard manufacturer’s site to find the latest audio drivers.


Gale

Then the crash probably corrupted the AUTOSAVE file. Is there a TEMP or TMP file there dated about the time of the crash? If so you could rename that to .autosave extension and rename the actual AUTOSAVE file to something else like .auto to stop Audacity opening it. Then try launching Audacity again.

If that does not help, read on.

Have a look in the _data folder of the project, sort the AU files by date and then look for a run of AU files from the time of the recording that have sequential timestamps - one file or or one pair of files every six seconds (or similar time like that).

Copy those AU files into a new folder somewhere than follow Recovering crashes manually to make a new WAV file of the recording. Then you can import the WAV into the last good saved state of the project.


Gale