The (BLF) was developed by Vector Informatik. It is a successor to the older ASC (ASCII) and BLF (original) formats.
// Create MF4 file MDF4_FILE* mdf = mdf4_create("out.mf4", MDF4_COMPRESSION_DEFLATE);
from asammdf import MDF def convert_blf_to_mf4(blf_path, mf4_path, dbc_paths=None): """ Converts a Vector BLF file to an ASAM MDF4 file. Parameters: blf_path (str): Path to the input .blf file. mf4_path (str): Path where the output .mf4 file will be saved. dbc_paths (list): Optional list of paths to .dbc files for signal decoding. """ print(f"Loading and converting blf_path...") # Extract data directly from BLF and initialize an MDF object # asammdf automatically parses CAN/LIN traffic from BLF formats mdf = MDF.concatenate([blf_path]) # Optional: Decode raw CAN IDs into physical values using DBC databases if dbc_paths: print("Decoding CAN signals with provided DBC files...") # Dictionary mapping the bus channel to the DBC file path # Example: 'CAN': [('vector_bus.dbc', 1)] dbc_dict = 'CAN': [(dbc, i) for i, dbc in enumerate(dbc_paths, start=1)] mdf = mdf.extract_bus_logging(database=dbc_dict) # Save as a standard, optimized MF4 file mdf.save(mf4_path, overwrite=True) print(f"Conversion complete! Saved to: mf4_path") # Example Usage if __name__ == "__main__": input_blf = "vehicle_test_log.blf" output_mf4 = "vehicle_test_log.mf4" network_db = ["powertrain.dbc", "body_control.dbc"] convert_blf_to_mf4(input_blf, output_mf4, dbc_paths=network_db) Use code with caution. Why this is the "New" Preferred Way convert blf to mf4 new
Converting to MF4 (Measurement Data Format v4) usually requires a database (like a .DBC or .ARXML file) to translate raw CAN messages into readable signals. Software Tools
mdf.save("new_mdf_file.mf4")
Go to the "Batch conversion" tab, drag and drop your BLF files, select MDF format version 4.x , and click Convert . 2. Vector CANape / CANalyzer (Commercial)
Add your target files, assign your database (DBC/ARXML), and click . Using Vector Command Line (Automated Windows Scripts) The (BLF) was developed by Vector Informatik
If your team already uses Vector instruments, you can leverage native utilities to perform the conversion. Using Vector CAN工具 (GUI) Open or CANoe .
The shift toward MF4 isn't just about keeping up with trends; it offers tangible engineering benefits: Parameters: blf_path (str): Path to the input