, converts message-based BLF logs into signal-based MF4 logs. It requires database files (DBC or CDD) to interpret the signal data. CANoe/CANalyzer
files. This is required to convert raw messages into human-readable signals. Import & Convert : Drag and drop your
BLF (Binary Logging Format) and MF4 (ASAM MDF 4) are file formats used to store recorded measurement and logging data—commonly from vehicle networks like CAN, LIN, or FlexRay. Moving from BLF to MF4 is about translating raw, often vendor-specific binary dumps into a standardized, feature-rich container that plays nicely with modern analysis tools.
To ensure your new MF4 file is usable, don’t just click "Convert." Follow this checklist:
Add your .blf files and start the process. The resulting .mf4 files can then be loaded for symbolic analysis. Vector CANoe/CANalyzer
Before diving into the "how," let's look at the "why." Both file formats store measurement and bus data, but they are designed for different use cases. Here’s a quick comparison:
mdf = MDF('corrupt.blf', repair=True)
' VBScript example Dim app, meas Set app = CreateObject("CANape.Application") Set meas = app.OpenMeasurement("C:\data\log.blf") meas.ExportMDF "C:\data\log.mf4", 1 ' 1 = MF4 format meas.Close
For automation and batch processing without expensive licenses, Python is the preferred route. The asammdf Library
is a proprietary format developed by Vector Informatik. It is highly optimized for logging bus data (CAN, CAN FD, LIN, FlexRay, Ethernet) during test drives or bench tests.
// Create MF4 file MDF4_FILE* mdf = mdf4_create("out.mf4", MDF4_COMPRESSION_DEFLATE);