blfObj = blfread('input.blf'); % Convert to timetable(s) then write as MF4 mdfWrite('output.mf4', blfObj) % Requires R2021b+
BLF files store raw hex data. While you can convert raw BLF to raw MF4, it is often more efficient to apply network databases (DBC for CAN, ARXML for Ethernet/AUTOSAR) during the extraction pipeline so that the MF4 contains human-readable physical values (e.g., EngineSpeed in RPM).
The asammdf library features a highly optimized backend specifically designed to ingest raw bus logging files and convert them into structured MDF4 measurement files. convert blf to mf4 new
Second, if your goal is to work with signal-based data (i.e., interpreting raw CAN IDs into physical values like speed, RPM, or temperature), you must have the correct . Without this "database," the MF4 file may still contain the raw messages, but it will not contain the decoded, meaningful signal values that are the true value of a signal-based conversion.
for channel_name in blf_dataframe: try: new_signal = asammdf.Signal( samples=blf_dataframe[channel_name], timestamps=blf_dataframe.index, name=channel_name ) mdf.append(new_signal, common_timebase=True) except: pass blfObj = blfread('input
: A robust alternative for those using PEAK hardware, it supports converting third-party formats like BLF to MF4 for cross-platform analysis. 2. Automated Python Workflows
rexdesk convert-folder -C -F mf4 -I "C:\path\to\blf\folder" -O "C:\path\to\mf4\output" -S can0 "C:\path\to\your_file.dbc" Second, if your goal is to work with signal-based data (i
files and start the conversion. The output will be a standardized file compatible with most analysis software. Vector Support Method 2: Python Automation (asammdf)
If you want, I can: