is a proprietary, message-based binary logging format developed by Vector Informatik GmbH. It's the native format for Vector's industry-standard tools like CANoe and CANalyzer. Its primary advantage is its high efficiency. BLF stores raw bus traffic (messages, error frames, and other events) in a compact, binary format, which results in significantly smaller file sizes and superior read/write performance compared to legacy text-based formats like ASC. While it's an excellent choice for internal recording and replay within the Vector ecosystem, its proprietary nature means it's not a universal standard for data exchange.
Drag and drop your BLF files into the queue and click . Vector BinLog Doctor / Command Line Converter
def convert_blf_to_mf4(blf_file_path, mf4_file_path): """ Converts a BLF file to MF4 format using asammdf.
with MDF('large.blf') as mdf: mdf.export_to_mdf4('large.mf4', chunk_size=1000000) # 1M records per chunk convert blf to mf4 new
You can also parse raw signals from BLF into signal-based MF4 using pandas integration. 3. PEAK-Converter (For PEAK-System Users)
During conversion, ensure that timestamp alignment is preserved, particularly for multi-bus logs.
Here's a robust working script that combines CANdas and asammdf to perform the conversion. It's a starting point for building your own automated tools: BLF stores raw bus traffic (messages, error frames,
from asammdf import MDF mdf = MDF('my_log.mf4') print(mdf) # Lists all channels/groups print(mdf.info) # Metadata data = mdf.get('EngineSpeed') # Read a signal
stands for Measurement Data Format, standardized by ASAM (Association for Standardization of Automation and Measuring Systems). The "new" generation refers to versions MDF 4.0 and MDF 4.1 .
from asammdf import MDF from asammdf.blocks.utils import MDFExportType Vector BinLog Doctor / Command Line Converter def
Here are the most reliable methods to convert your Vector .blf logs to the newer .mf4 format. 1. Vector Logging Converter (CANape/CANoe)
import asammdf from asammdf import MDF import can
asammdf (free, cross‑platform, powerful). For production/embedded: Vector CANape or custom C with MDF4 lib.