With Subler Video Tracks are not selectable for mixing

[vonline31415]

I am opening mkv files which contain video, multiple audio tracks and vobsub subtitles. I am trying to make a file that can play on an apple tv/QuickTime with selectable subtitles. But when I open the mkv file the video track is listed, but it is not selectable. So all I can do is make a m4v file that contains the audio. Good news is that Quicktime is recognizing the subtitles. What am I doing wrong?

I am running Subler 1.2.9 on OS X 10.12.4

[Damiano Galassi]

It depends on the video track format. You can mux only a limited number of video format in Subler (mainly because Quicktime supports h.264 and mpeg-4 video). What's the format of your video track? If it's not one of those two, I would recommend HandBrake to reencode it.

[vonline31415]

The video source is an mpeg2 in an mkv file. Handbrake successfully encodes the file, but then it does not have an option to change the subtitle into a format that is recognized by appleTV. So it sounds like I need to pass the mkv file through handbrake and then take that output and mix it with the subtitle track in subler. Is that your take on it?

Thanks for the reply.

[Damiano Galassi]

Yes, that would work.