What is the difference between AVC High 10 and AVC High?

[lawllmaster]

This is probably a stupid question, but what is the difference between the High 10 and the High profiles?

[poisondeathray]

This is probably a stupid question, but what is the difference between the High 10 and the High profiles?

10bit vs 8bit AVC

Most devices won't play 10bit AVC, only support the 8bit variety . You need a computer to play 10bit AVC

In general, 10bit will yield more efficient compression over 8bit AVC, under the same situations, settings

[lawllmaster]

This is probably a stupid question, but what is the difference between the High 10 and the High profiles?

10bit vs 8bit AVC

Most devices won't play 10bit AVC, only support the 8bit variety . You need a computer to play 10bit AVC

In general, 10bit will yield more efficient compression over 8bit AVC, under the same situations, settings

Then is there a way to change profiles without re-encoding the entire file? (Like using mkv2mp4)

[Selur]

No. Since this is not only a flag.
Also different profiles normally also mean different VBV restrictions per Level -> changing the profile flags (assuming they were properly set to start with) is always a bad idea.