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.
We tested a 2.4GB BLF file (2 hours of 12x CAN channels) on an i7-12700K. convert blf to mf4 new
Method 1: The Modern Python Approach (Open-Source & Scalable) BLF (Binary Logging Format) and MF4 (ASAM MDF
Click on File > Open and select your .blf file. Method 1: The Modern Python Approach (Open-Source &
if 'EngineSpeed' in conv: speed = conv.get('EngineSpeed').samples print("Min/Max speed:", speed.min(), speed.max())
In 2026, the "new" in converting BLF to MF4 is defined by the power and accessibility of open-source tools like asammdf . They offer a level of flexibility, scalability, and automation that was previously impossible without significant investment. Whether you are a solo engineer needing to analyze a single log or a team tasked with building a massive data analytics pipeline, the methods outlined in this guide provide a clear pathway from the proprietary BLF format to the open and standardized world of MF4.
with BLFReader("input_log.blf") as reader, MF4Writer("output_log.mf4") as writer: # 逐一读取消息并写入新文件 for msg in reader: writer.on_message_received(msg)