Need to convert Flac 5.1 to DTS-HD MA 5.1

[F0RTituDeee]

The audio track was converted from a standart issue blu-ray DTS-HD MA 5.1 (24 bit) to Flac 5.1 (24 bit). I have to reverse it back to DTS-HD MA 5.1 + core as it used to be (just don't ask why). Can't wrap my brain around the proper profile. I've tinkered with one some guy made, but it won't show at all. Please help!

And also need to add an AC3 core to a coreless True-HD track so it can be muxed with TSmuxer. Any tip is appreciated.

[Woodstock]

Don't use the FLAC profile when ripping, and it won't happen.

Converting FLAC back to DTS-HD MA isn't possible with open-source tools.

[F0RTituDeee]

That what I was afraid of. The guy who made this mess, didn't understand the process wasn't easily reversable, damn.
Ok, what tools should I use then? A tip would be nice.

[Woodstock]

Fastest way is to re-rip with the default profile (that stuff's discussed in this topic in part).

If you're going to further process the file in handbrake, you can convert the FLAC to either AAC or AC3 5.1.

If you do not want to re-encode the video, ffmpeg can be used to convert the audio while leaving the video untouched.