Mi sembra che i sottotitoli siano chiari e facili da seguire.

Literally, mi sembra che means it seems to me that.

• sembra = it seems
• mi = to me
• che = that

So:

• Mi sembra che i sottotitoli siano chiari
  = It seems to me that the subtitles are clear

In natural English, we often just say I think or It seems to me, but Italian uses this structure very often.

The mi is an indirect object pronoun. It shows whose impression or opinion it is.

Compare:

• Mi sembra che... = It seems to me that...
• Ti sembra che... = Does it seem to you that...?
• Ci sembra che... = It seems to us that...

The che introduces the second clause: that the subtitles are clear and easy to follow.

So the sentence has two parts:

1. Mi sembra = It seems to me
2. che i sottotitoli siano chiari e facili da seguire = that the subtitles are clear and easy to follow

This is very common in Italian after verbs of opinion, impression, doubt, emotion, and so on.

Examples:

• Penso che sia vero = I think that it is true
• Credo che abbiano ragione = I believe that they are right
• Mi sembra che tutto vada bene = It seems to me that everything is going well

Because after sembrare che, Italian normally uses the subjunctive.

So:

• sono = present indicative of essere
• siano = present subjunctive of essere

Since Mi sembra che... expresses an impression or personal judgment, standard Italian prefers the subjunctive:

• Mi sembra che i sottotitoli siano chiari

This is one of the most important uses of the subjunctive in Italian: after expressions of opinion or appearance.

A few similar examples:

• Penso che lui sia stanco
• Credo che loro abbiano capito
• Mi pare che tutto funzioni

In standard Italian, especially in careful speech and writing, no: after mi sembra che, the expected form is siano.

So the standard sentence is:

• Mi sembra che i sottotitoli siano chiari

You may sometimes hear the indicative in casual spoken Italian, especially in some regions or informal contexts, but for learners, the safest and most correct choice is:

• sembra che + subjunctive

So for exams, writing, and good general usage, use siano, not sono.

Because the subject is i sottotitoli, which is plural.

• il sottotitolo = the subtitle
• i sottotitoli = the subtitles

So the verb has to agree with that plural subject:

• il sottotitolo sia chiaro = the subtitle is clear
• i sottotitoli siano chiari = the subtitles are clear

The same agreement also affects the adjectives later in the sentence.

Because adjectives in Italian agree with the noun they describe.

Here the noun is:

• i sottotitoli = masculine plural

So the adjectives must match:

• chiaro → chiari
• facile → facili

That gives:

• i sottotitoli siano chiari e facili

If the noun were singular, you would say:

• il sottotitolo sia chiaro e facile

If it were feminine plural, the forms might change differently depending on the adjective:

• le istruzioni siano chiare e facili

Notice:

• chiaro changes for gender and number
• facile has the same singular form for masculine and feminine, but the plural is facili

Facili da seguire means easy to follow.

In this context, seguire does not mean physically following something. It means being able to keep up with it, understand it, or process it comfortably.

So if subtitles are facili da seguire, they are easy to read and understand as the video continues.

This structure is very common:

• facile da capire = easy to understand
• difficile da spiegare = difficult to explain
• comodo da usare = convenient to use
• bello da vedere = nice to look at

So adjective + da + infinitive often corresponds to English adjective + to + verb.

Because Italian often uses da + infinitive after an adjective to express something like to be ...-ed or to ... in English.

So:

• facile da seguire = easy to follow
• literally, something like easy to be followed

This is just the normal Italian pattern here.

You should learn it as a structure:

• facile da + infinitive
• difficile da + infinitive
• impossibile da + infinitive

Examples:

• un libro facile da leggere = an easy book to read
• una regola difficile da ricordare = a rule difficult to remember
• un problema impossibile da risolvere = a problem impossible to solve

Using di seguire here would not be correct.

Yes. Italian word order is fairly flexible.

The original sentence is:

• Mi sembra che i sottotitoli siano chiari e facili da seguire.

But you could also say:

• I sottotitoli mi sembrano chiari e facili da seguire.

This version is very natural too, and it avoids the che + subjunctive structure because now i sottotitoli is the subject of sembrano directly.

Compare:

• Mi sembra che i sottotitoli siano chiari
• I sottotitoli mi sembrano chiari

Both mean essentially the same thing.

The second version may feel simpler to learners because it does not require the subjunctive.

It depends on what the subject of sembrare is.

In the original sentence:

• Mi sembra che i sottotitoli siano chiari

Here, sembra is singular because the main verb is being used impersonally: it seems to me that...

But in:

• I sottotitoli mi sembrano chiari

Here, i sottotitoli is directly the subject of sembrare, so the verb must be plural:

• mi sembrano = they seem to me

So:

• Mi sembra che... = It seems to me that...
• I sottotitoli mi sembrano... = The subtitles seem to me...

Both are correct; they are just built differently.

Yes, but a me adds emphasis.

• Mi sembra che... = neutral, normal
• A me sembra che... = To me, it seems that...

You might use a me if you want contrast or emphasis:

• A me sembra che i sottotitoli siano chiari, ma ad altri no.
  = To me, the subtitles seem clear, but to others they do not.

In most ordinary situations, mi sembra che is enough.

It can mean both, depending on context.

With sottotitoli, chiari can suggest that the subtitles are:

• clearly written
• easy to read
• easy to understand
• not confusing

So in this sentence, chiari and facili da seguire work together:

• chiari = clear
• facili da seguire = easy to follow

They are similar, but not identical. Chiari focuses more on clarity; facili da seguire focuses more on how easy it is to keep up with them while watching.

Yes, it is completely natural.

It sounds like a normal way to give an opinion about subtitles, a presentation, instructions, or anything else that can be clear and easy to follow.

Very similar natural sentences would be:

• Mi sembra che le istruzioni siano chiare e facili da seguire.
• Mi sembra che la spiegazione sia chiara.
• I sottotitoli mi sembrano chiari e ben fatti.

So this is a good, idiomatic sentence to learn.