I rate based on these criteria without bias. I tested every video converter below before post this:
fast
free
no error
look
ease
offline
Video output quality

If you google ts to mp4 converter now, you will find hard time to get one.
I know there are video converter like Format Factory, but I am not going to install a 200mb application just to convert ts.
I have no issue with other video format actually, but VLC is so lag when I want to jump to another timeline when playing .ts video.
Renaming the extension like most youtube video will not solve the lag, to solve it is to convert it.
Let's do lot of video files converting and evaluate the speed.

Ok let's evaluate free video converter option already out there:
Format factory - 4/5

Full install size ~218mb
Complete free: yes
Look: 3/5
Ease: too many clicking
Video quality: ok
No video quality lost: probably possible with extra manual setting
Speed: medium
Last updated: 2020

Free TS Converter - 4.3/5

Full install size ~150mb
Complete free convert ts: yes
Look: 4.5/5
Ease: easy but application will got pop out ads
Video quality: ok
No video quality lost: not possible
Speed: medium
Last Updated: Aug 2020

VLC - 3/5 (video player itself is 5/5 no comment, but it's not a tool for convert video)

Full install size ~167mb
Complete free: yes
Look: 4/5
Ease: Not ideal for video convert task
Video quality: ok
Speed: possible fast but still too many works
Ok I know this is more like a video player but itself got video converting option. VLC itself is pretty, but converter is meh.
No video quality lost: possible with manual adjust
Last updated: 2020

Vidmore - not rated
No picture coz it's not free. not recommended.
Limited 5 minute file.

Handbrake - 4.5/5 (I will give it 4.7 if it will automatic save setting after exit)

Full install size ~58mb
Complete free: yes
Look: 4.3/5
Ease: too many configuration, need to manual adjust each time
Video quality: with configuration you can output original quality but cannot save setting
Speed: possible fast but many configuration
No video quality lost: possible
Last Updated: 2020 (should be stable)

Pazera - 4/5

Full install size ~42mb
Complete free: yes
Look: 4/5
Ease: okish, but no option to keep original video quality (bad)
Video quality: ok
No video quality lost: probably possible need manual skills but I truly not sure
Speed: Possible fast maybe?
Year: 2018 (should be stable)

Medlexo - 4.8/5 (I will give it 4.9 if there is language translation)

Full install size ~12mb
Complete free: yes
Look: 4.5/5
Ease: very straight forward, easy for beginner
Video quality: Original
No video quality lost: Always no quality lost
Speed: very fast
Last Updated: 2020 (should be stable)

If the software is stable, mean there is no bug so it don't need update to fix bugs.
The choice of my best list: medlexo
What do you guys think? Which one is your favorite converter? Do share with me.

VLC was never meant for vidya conversion lmao