Corrupted .aup3 project (2.56GB DJ set) – sqlite3.rc:11 / SampleBlocks issue

Audacity 3 Help Forum Windows
1

Hello,

I need help recovering an Audacity project.

System:

  • Audacity: 3.7.5

  • Windows 10 (22H2)

Project information:

  • File type: .aup3

  • File size: 2.56 GB

  • Recording type: Single stereo DJ set recording (~1 hour)

  • No multiple tracks or complex editing

Error in Audacity:
sqlite3.rc: 11
SqliteSampleBlock::Load::step
“Audacity failed to read from a file”

What I tried:

  • Reinstalled Audacity

  • Opened project with DB Browser for SQLite

  • PRAGMA integrity_check initially completed without obvious errors

  • sampleblocks table exists and block IDs go up to 2602

  • Around blocks 2327–2449 fail when read

  • VACUUM INTO returns:
    “database disk image is malformed”

I was able to extract raw sample blocks with Python, but resulting WAV files are corrupted (wrong duration, heavy distortion/noise).

The original .aup3 file still opens in DB Browser and appears partially readable.

Could someone help me recover or extract the audio from this project?

Thank you.

1 Like
3

Thank you very much for being willing to help.

I did not use Audacity Project Tools specifically. I only used Python scripts and DB Browser for SQLite to inspect the .aup3 file and attempt extraction.

What I found:

  • The .aup3 file is 2.56 GB

  • DB Browser opens the file

  • sampleblocks table exists (up to blockid 2602)

  • Around blocks 2327–2449 fail when read

  • VACUUM INTO returns “database disk image is malformed”

  • I was able to extract raw sample blocks with Python, but the resulting WAV had incorrect duration and severe distortion

The recording is a single stereo DJ set (~1 hour), not a multitrack project.

I still have the original untouched .aup3 file.

4

I managed to do some kind of recovery using the Audacity project tools and another utility but it did have missing bits of audio.