Transcoding only MKV and mpegts

Ok this is new to me.
Firstly all my media is converted from avi to mp4 and copied from mkv to mp4 - everything.
I am looking at plexpy graphs that show transcoded/direct play/direct streams.

I have randomly checked 20-30 files and everyone that direct streamed shows as an mp4

Everyone that was transcoding shows as MKV or mpegts. (as per the attached)

So if I can work out what my converting/copying software does to show as mp4 (in plexpy)
I will have no more transcoding -ha?

Thoughts?

See where “Container” says mkv.
When direct play and streams those two “containers” show as mp4

Why is that when the files are mp4.

I have been told by the PlexPy developer that PlexPY is not accurate any more since PMS vers. 1.4.x as the API has changed.

He said the data PlexPy reports is unreliable and probably incorrect till he fixes it.

He did not say when the fixes were gonna added.

Thanks,

So does that mean it is just “cosmetic”
i.e. it reports wrong but has no effect on anything ?

My understanding is the data PlexPY reports is, in most cases, probably wrong.
So the only effect is that you cannot believe what you see in PlexPY regarding streams, transcoding, or formats.