OMG, which software created this? This is obviously RTF, not plain text!
Change the file extension to .rtf, then open it in Word and save as real plain text file (the actual subtitles format is SRT, see https://en.wikipedia.org/wiki/SubRip).
BTW, translating subtitles using CAT tools is basically pointless as a) by the nature of subtitles it's pretty unlikely to find any reusable texts, and b) again due to the subtitles nature are sentences divided to multiple parts (as the parts are displayed one-by-one at different times), i.e. the sentences are nonsensically broken down to multiple separate segments.

Hi Ekaterina Kroumova  

That is a pretty horrible format.  SRT isn't the only subtitle format, but I checked the 16 most common and not one of them look like this so I think Evzen is probably right that this is someones attempt to extract text for translation and they haven't done it very well.  I don't know how to handle this as RTF but I can use a regex delimited filetype for it.  One rule like this:

Opening pattern:

^\\cf0\s

Closing pattern

\\$

This is obviously based on the very simple example you provided but perhaps it'll help.

Unknown said:

BTW, translating subtitles using CAT tools is basically pointless as a) by the nature of subtitles it's pretty unlikely to find any reusable texts, and b) again due to the subtitles nature are sentences divided to multiple parts (as the parts are displayed one-by-one at different times), i.e. the sentences are nonsensically broken down to multiple separate segments.

Hi Evzen,

I don't completely agree with you here.  We have many clients who use CAT tools for subtitling and even though the things you say are not true for all texts the more important part is that using a CAT supports a more controlled process.  I even have a TQA model for subtitling, although it does need a preview developing (way down my list unfortunately as I'd love to do it) to allow the finer points of working with subtitling to be applied.

Hi Ekaterina Kroumova 

Sounds like you have the best approach, but just in case you want to know here's how it's done:

Unknown said:

I think Evzen is probably right

Not probably... I AM right here, for more than 100% ;-)

Unknown said:

We have many clients who use CAT tools for subtitling

Well, we use CAT tools for translating subtitles too... but that doesn't mean that it's not pretty pointless ;-)

Unknown said:

the more important part is that using a CAT supports a more controlled process.

Controlled process has not much to do with CAT tools as such... maybe with using tools in general.
What I meant was using TMs for pretranslation or storing the (broken) segments in TM - there is basically ZERO benefit in real life. And that was my point. Unlike many people theoretizing about these things, I've personally done quite a number of transcriptions (incl. subtitles timing), processed translations, done timing corrections, etc.m so I could see the the (almost) zero real benefit.

The point is that properly done subtitles translation is far from classical translation, it's rather a transcreation - the target sentence often only "presents the message" of the source, but using different words... so it does not make much sense using/creating a TM.