Troubleshooting “Reproject Raster PCT Fails with Unexpected Error Pyramiding Raster File When Converting TIF to JPEG”

📌 Problem

When converting a TIF (GeoTIFF) to JPEG using Reproject Raster PCT, the process fails with the following error:

The error occurs near the end of processing and prevents the task from completing successfully.

✅ Probable Resolutions

#1: Disable Pyramid / Overview Creation (Recommended)

JPEG outputs do not reliably support external raster pyramids. When Reproject Raster PCT attempts to build pyramids for a JPEG output, the process may fail.

When outputting to JPEG:

• Disable any options related to:
  • Build Pyramids
  • Build Overviews
  • Create Reduced Resolution Dataset

#2: Use GeoTIFF as an Intermediate Output

If pyramid creation is required earlier in the workflow, use GeoTIFF as an intermediate output format.

1. Reproject the raster to GeoTIFF
2. Build pyramids on the GeoTIFF if needed
3. Convert the GeoTIFF to JPEG as a final step

This workflow avoids JPEG-related pyramid limitations.

#3: Resolve File Access or Locking Issues

Pyramid creation may fail if LP360 cannot write auxiliary files to the output location.

• Write output to a local disk
• Ensure the output directory is empty
• Close any applications that may access the output file
• Temporarily disable antivirus or indexing services on the output directory
• Delete any existing overview or auxiliary files before re-running

📚 Additional Notes

• The error typically occurs after reprojection and conversion are complete
• The output JPEG may still be valid despite the reported failure
• JPEG outputs generally do not require external pyramids for normal use

📬 Need Help?

If you're still stuck, please Contact Support for assistance.