Oyuncu kadrosu birlikte çalıştığı sürece mizansen düzelecek.

It is a noun phrase meaning the cast or the acting cast.

Literally:

• oyuncu = actor, performer, player
• kadro = staff, roster, lineup, cast

Together, oyuncu kadrosu means something like the roster of actors. In natural English, you would usually just say the cast.

This is a very common Turkish noun-compound pattern.

In Turkish, when one noun modifies another noun, the second noun often takes a 3rd person possessive suffix:

• oyuncu kadrosu = actor cast / cast of actors
• film müziği = film music
• okul kapısı = school door

So the -su in kadrosu does not mean his/her cast here. It is just the normal marker used in this type of compound.

Because oyuncu kadrosu is grammatically a singular collective noun.

Even though a cast is made up of several people, the phrase itself is one unit: the cast. Turkish often treats that as singular, so the verb form is also singular:

• oyuncu kadrosu ... çalıştığı sürece = as long as the cast works together

If you used oyuncular instead, then a plural form would be natural:

• Oyuncular birlikte çalıştıkları sürece ... = As long as the actors work together ...

This is a standard Turkish structure meaning as long as ..., so long as ..., or sometimes while ... continues to ....

The pattern is:

verb + -DIK + possessive ending + sürece

Here:

• çalış- = work
• -tığ- = part of the -DIK subordinate-clause form
• -ı = 3rd person singular agreement
• sürece = as long as / for the duration that

So çalıştığı sürece means as long as he/she/it works.

In this sentence, that refers to oyuncu kadrosu.

Because Turkish usually does not use a normal finite tense verb in this kind of subordinate clause.

English says:

• as long as the cast works together

The verb works is a normal finite verb.

Turkish instead uses a non-finite subordinate form:

• birlikte çalıştığı sürece

So çalıştığı is not the ordinary present tense. It is the form required by the -DIK ... sürece construction.

This is very common in Turkish. A few examples:

• Ben yaşadığım sürece = as long as I live
• Sen burada kaldığın sürece = as long as you stay here
• O istediği sürece = as long as he/she wants

Here, sürece means as long as or so long as.

It adds a sense of duration with a condition:

• if this situation continues,
• during the time this remains true,
• then the main clause applies.

So the sentence is not just about time. It also has a conditional feel: if the cast keeps working together, the result will happen.

Birlikte means together.

It tells you that the members of the cast are not just working in general, but working together with each other.

Its position is also normal. In Turkish, adverbs like birlikte often come right before the verb:

• birlikte çalışmak = to work together

Mizansen is a theatre and film term, borrowed from French.

It usually refers to staging, blocking, or the arrangement of actors and action in a scene. Depending on context, it can also suggest the overall visual organization of a scene.

So it is more specialized than a basic everyday word. It does not just mean set or decoration by itself.

Düzelecek is the future tense of düzelmek.

• düzelmek = to improve, get better, become corrected, straighten out
• düzelecek = will improve / will get better

That fits the idea that the mizansen will improve as a result of the cast working together.

A useful contrast:

• düzelecek = it will improve / get fixed
• düzeltecek = he/she/it will fix it
• düzeltilecek = it will be fixed

So düzelecek presents the improvement as something that happens to the mizansen, not as an action with an explicit outside fixer.

No, Turkish word order is flexible, although the version you have is very natural.

The sentence puts the condition/time clause first, then the main result:

• Oyuncu kadrosu birlikte çalıştığı sürece mizansen düzelecek.

That is a very normal way to say it.

You could also move things around for focus, for example:

• Mizansen, oyuncu kadrosu birlikte çalıştığı sürece düzelecek.

But the original order is smoother and more neutral.

For an English speaker, a rough approximation is:

chah-luhsh-tuh-uh

A few key points:

• ç = ch
• ş = sh
• ı is not the English i sound; it is a deeper, unrounded vowel
• ğ is usually not pronounced like a hard g in English; it often lengthens or smooths the surrounding vowels

So the end of çalıştığı flows smoothly rather than sounding like a strong g consonant.