Results are different when downloading logs through Mission Planner and downloading logs through MavProxy

Results are different when downloading logs through Mission Planner and downloading logs through MavProxy.

The details are as follows.

Load module dataflash_logger in Mavproxy

Flight drone

I can see the log file is created on the CC board in real time.

Finished to flight.

Connect drone fc with PC in mission planner.

Download Dataflash Log Via Mavlink.

The file created from mavproxy and the file downloaded by mission planner are not same…

And, the size of file downloaded by mission planner is bigger than the file created from mavproxy…

Why is this so?

Start with the dataflash_logger module entry point and reproduce the download through MAVProxy and Mission Planner using the described flight and CC board setup. Compare the generated and downloaded files, including their sizes, and determine why they differ; done means the cause is documented and the download behavior or explanation is consistent.

Written by the indexing model from the issue text.