AmuLulu

I cant say I am surprised Simply copying the file with different suffix fools no-one You need to re-encode as .mkv I have been doing that will all other formats for several years now, mp4 etc Never had a problem playing the new version in my LG 65" Nano tv With no noticeable loss of quality

You said it yourself 25 years ago The world has moved on. A quick conversion to .mkv takes a minute or two and saves disk space, without loss of quality

Have you tried converting the file to a more modern format? I use Fornat Factory https://format-factory.en.softonic.com/ The converted file. say .mkv, will run with the Media Player and will be smaller, without loss of quality, if you want to archive it

When you see the file name on the screen Use the subtitle icon on the lower left of the screen to open the subtitle box Then you can select the subtitles you want to see There is no default related to the tv settings

It depends on what is embedded in the video file Some have very basic subtitles which are fine others have detail about font/colour etc I use SubtitleEdit to strip and modify the subs The first time you will need to enter all the options you need but they are saved ready for the next time

The standard programme viewer is just as good as Kodi If you really want Kodi you can install it on a seperate box plugged in an hdmi socket

Sound like a problem with SKY Now app on LG You have to chase Sky😏

Where are the subtitles coming from? TV channels or downloaded video on disk? The latter are quite easy to adjust Start the video in the Media Player Click then Scroll down with the centre button on your remote You will see a SUB button come up on the screen Click on it, and in the menu on the right adjust the Size, at the bottom of the list

Why did the latest WebOS update 03.51,15 change my home screen settings? That is very RUDE It is MY home screen, not yours☹️

I have many files on my external disk but I do not experience any substantial delay It may be that you are using the disk for the first time? After that you will find a file added to you external device that will be used on subsequent connections and the load time will be negligible

I use the standard Media Player on my LG Nanocell TV It plays all the modern media type, MKV and MP4 perfectly smoothly If a file will not play I run it through Format Factory on my PC to convert to MKV with 265 compression No visible loss of quality but file size reductions are beneficial as I have a large archive As for the frame drops and lagging, I suggest you look at the cable you are using to connect the USB and try a different USB. The cheap ones are not always good quality I run my videos from a USB hdd

Are you sure the channel you are watching provides subtitles? IPTV cannot just magic them up for you I have IPTV smarters installed on my LG TV I do get subtitles on series, but only arabic Maybe a function of my location Nothing on live channels

Thanks

Where did you get that idea? A link would be useful

I may be old fashioned but I turn off my TV at the power socket at night