Converting MCAP files to mp4

[sh1negg]

Hey there,

after our last meeting, @DerSimi told me, his biggest Christmas wish would be a Python script, which converts MCAP files to their respective mp4 file. With this PR, I'm happily granting this wish 🎄

What was changed

I created mcap_to_mp4.py, which is a Python script, that can extract the video data from a MCAP file and converts said data to a mp4 file. The connection with the CLI will come in a separate PR

How to test

The mcap_file variable defines the path to the MCAP file to be converted. To test this function, you must replace the empty string with a valid path. After running the script, a file called output.mp4 will be created, which contains the video file of the used MCAP file

[sh1negg]

Btw, I’ve assigned all of you to the review, but I want to emphasize that there’s no pressure at all to take it on. I just wanted to make sure that whoever has the time and capacity can pick it up.

[DerSimi]

Hi Felix, thank you and merry Christmas 🌲🌲🌲 !

Ig your file just wants to show how this works in principle, and it does:

So, I won't bother you with creating a more convenient way of selecting a mcap file. :)

We can keep this for now, and the function in it seems reasonable, but are you sure there is only one camera topic? Maybe consider extending extract_mcap_data by argument topic, and rename the function.

Your code also shows how to read all topics, this should also be a part of the CLI connection.