[primaeval]

Looks like it’s an android tv. Not a box at all.

Yes, it is.

That's sad.
We were so close! 

 The only clue that might help is that some of the bug reports were due to running out of memory or storage space.
https://bugs.launchpad.net/bzr/+bug/723234
Make sure wherever you are recording to has enough space and is writeable by kodi.   

I checked this. I have 3.7GB free in the recording location and it's writeable: in the recording folder was created a folder "Other", and inside it a folder with the channel name.
Inside that folder, two files:
- .json (79 bytes)
- .ts (0 bytes)

the error is raised by the instruction:
data = p.stdout.read(1000000)
in a file
/storage/emulated/0/Android/data/com.semperpax.spmc16/files/.spmc/userdata/addon_data/plugin.video.iptv.recorder/jobs/af5044c7-4793-11e9-ae1f-bb7a85059de8.py 

 There are 3 things you could try.

Try to not pipe the output through kodi by turning off
Settings \ Jobs and Rules \ pipe ffmpeg through Kodi

Turn on
Settings \ Debug \ debug ffmpeg stdout/stderr
and see if ffmpeg creates any stdout stderr files in the jobs folder.
Turn it off again after or it won't record to the ts file.

Find out if it is actually copying ffmpeg to the right place for spmc and it is runnable from there.
spmc has some non-standard paths, I seem to remember.
The ffmpeg location should be in the jobs py files in the cmd.
The logic for copying ffmpeg and  making it runnable is in the ffmpeg_location function.
https://github.com/primaeval/plugin.vide...in.py#L407