Convert Blf To Mf4 New May 2026
| Method | Time | File Size (Output) | Metadata Preserved | | :--- | :--- | :--- | :--- | | | 9 min 30 sec | 2.1 GB | Yes | | CANape 22+ CLI (New) | 1 min 12 sec | 1.9 GB | Yes | | asammdf v7.0 (Old lib) | 4 min 50 sec | 2.4 GB | Partial | | asammdf v7.5+ (New) | 2 min 10 sec | 1.8 GB | Full |
import sys from asammdf import MDF def convert_blf_to_mf4(input_path, output_path): print(f"Loading input_path... (This may take a moment for large files)") try: # The 'new' part: MDF natively reads BLF extensions without specifying format mdf_obj = MDF(input_path) convert blf to mf4 new
Introduction: The Data Conversion Dilemma In the world of automotive engineering, telematics, and data analysis, file formats are the silent gatekeepers of productivity. Two of the most common proprietary formats you will encounter are BLF (Binary Logging Format) , developed by Vector Informatik, and MF4 (Measurement Data Format 4) , the standard defined by ASAM (Association for Standardization of Automation and Measuring Systems). | Method | Time | File Size (Output)
pip install --upgrade asammdf Note: For large files, install the optional LZMA compression library: pip install lz4 brotli Create a file called convert_blf.py : pip install --upgrade asammdf Note: For large files,
#!/bin/bash for file in *.blf; do base=$(basename "$file" .blf) echo "Converting $file to $base.mf4" python -c "from asammdf import MDF; MDF('$file').save('$base.mf4', compression=2)" done
Get-ChildItem -Filter *.blf | ForEach-Object $output = $_.BaseName + ".mf4" Write-Host "Converting $($_.Name) to $output" python -c "from asammdf import MDF; MDF('$($_.FullName)').save('$output', compression=2)"
We tested a 2.4GB BLF file (2 hours of 12x CAN channels) on an i7-12700K.