Convert Blf To Mf4 New <Quick GUIDE>
mdf.save(output_path, compression=3) # LZ4 is fastest The "new" trend is data lake automation. Here is a bash script to convert an entire folder:
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
mdf = MDF(input_path, sync_timestamps=True) Error: MF4 output is 10x larger than the BLF input. Cause: Default MF4 saves XML data uncompressed. Fix: Use compression=2 (Deflate) or compression=3 (LZ4) when saving: Cause: Default MF4 saves XML data uncompressed
#!/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 compression=2)" done convert_blf_to_mf4(sys.argv[1]
convert_blf_to_mf4(sys.argv[1], sys.argv[2]) python convert_blf.py my_vehicle_log.blf my_vehicle_log.mf4 Step 4: Verification (Optional but Recommended) Load the new MF4 back into asammdf to verify channels:
