Subtitle from UHD to SRT Full hd?

[BlurayHD]

Hi guys I have some classic movies than I love to wach and I want to make a backup on a MKV file so I can have it on a external disc, but so far I have a fullhd tv, and because that I´ll encode this movies in uhd to a fullhd several of this movies have director´s commentary and I so wish to convert this subtitle from the uhd to a some srt full hd so I´ll can wach on my full hd tv, the movie with comentaries

Is there some tool for convert subtitles UHD to SRT subtitles in full hd?

Thank You in advance !!

[netmask56]

Look for PGS to SRT Subtitle Edit is one program

[BlurayHD]

Look for PGS to SRT Subtitle Edit is one program

Thank You Netmask so this tool convert the uhd PGS subtitle to full hd SRT subtitle without problems?

[Ennio]

There is no thing as "full hd SRT subtitle". SRT is just text and timecodes.

Thereby, "converting" isn't the right phrase I think. When you import a PGS stream (aka SUP) into SubtitleEdit with the intention to create srt, it'll go through a process called OCR, which is short for optical character reading. It "tries" to create text out of the pictures inside the PGS stream.
During this process there will be more/less (reading-) errors. These have to be corrected.