Play dual audio on Quick time

Do I have to use specific setting in final cut pro x to make it quick time compatible?

Finally finished reading the 2017 FCPX Help information and User Guides as posted online by Apple. It appears that the user settings required to do what you want are not currently built into the FCPX app itself. Since QT7 Pro keys are no longer being sold and QT7 itself may have a limited life expectancy, recommend you try a more modern and easy-to-use alternative utility like Subler as described below:

1. Drop 'n drop your source video file on the Subler icon to open the data track import window depicted below:

2. Click the "Add" button to open the pre-selected video and alternate language audio tracks in a new Subler work window as seen below:

3. Note that the secondary audio track (in this case Portuguese) was automatically disabled when added to the work window. At this time you can select the appropriate language labels for both of your audio tracks from the pop-up list provided as pictured below:

4. If desired, you can even reset the default language option from English as shown above to Portuguese as shown below by simply enabling and disabling the appropriate audio tracks as displayed below:

5. Since track switching is automatically set by the Subler utility, you are essentially done editing your file data at this point and can save your results to either an MP4 or an M4V file container as may best suit your viewing workflow.

NOTE: The Subler utility has many other features and functions that make it indispensable.

I tried to be as clear as possible.

My workflow on final cut pro x is like that. I sync the video and 2 audio tracks and assine different roles to each audio track like this:

Then on the export settings I set the different roles as multi-tracks like this:

Here is a sample of a movie exported using the above workflow. Please open it in VLC or other media player to see that it is possible to select the audio track. Then open it in quick time to see what happens.

As previously indicated, I have yet to switch to FCPX and therefore do not know what other user setting options may or may not be available to you. However, having downloaded and analyzed the output of your FCPX workflow, I can now tell you what is wrong with your file. For the purpose of "fixing" the file settings, I will use the QT 7 Pro Player app.

1. As you can see in the image below, your current settings enable both audio tracks simultaneously.

Therefore, the first change to be made is to disable one of the audio tracks. In this case, I will disable the "Stereo Track 2" (Portuguese) audio track by deselecting the "Enabled" settings as seen below:

2. Your next problem is the fact that neither audio track is associated with any specific language identifier as depicted in the images below:

So once again I used the QT 7 Pro Player app to add correct language identifiers to each audio track which then become user selectable during normal playback in an QT-based app that supports alternate language (e.g., QTX, QT7, Safari, iTunes, etc.) selection as seen here:

3. Lastly, as you can see below, none of the audio track "switches" have been set for use.

These "switches" must be set to tell the file where to find the alternate language track audio that is selected in the "View > Language" menu as seen below in your case:

And that is all that needs to be done to fix an improperly coded/programmed multiple language file. I have uploaded a corrected copy of your sample file in case you want to verify the changes: Boss_Baby_Fixed.mov

But when I play them in quick time, both audio tracks plays simultaneously.

Sounds as if both audio tracks are simultaneously enabled whereas QT expects a single audio track (the one currently selected) to be explicitly enabled and all other audio tracks to be explicitly disabled.

I can't select audio track in View->Languages.

Sounds as if the "switch" settings are improperly set. (I.e., no language IDs set, all audio tracks have the same language setting, alternative track pop-ups not set, etc.)

So. My question is: How can I play a movie with selectable audio tracks in quick time? Is it possible? Do I have to use specific setting in final cut pro x to make it quick time compatible?

Basically, the file must be internally programmed with settings to identify alternative language options and pointers to which track is to be enabled when a specific language option is selected. If all audio tracks are attempting to play simultaneously and/or no alternative track options display in the View menu "Language" option, it would appear your file is not properly programmed for multiple language use.

Since you did not post a sample copy of your current workflow file I'm unable to analyze your problem and provide a specific solution. Therefore, I've posted a working sample file which you can download and compare with your file(s) to hopefully discover the issue and a solution on your own, as well as, confirm whether or not it is possible to view alternate language video content on your system. AlternateLanguageSample.mp4

Unfortunately, I'm still using QT 7 Pro and/or Subler to set alternative language settings on those rare occasions I need alternate language options. Thus, I cannot say what setting modifications might be required when using the FCPX workflow.