Quote:
Originally Posted by MrVideo
You can't rip out the AC3 core and have AC3 5.1 to put back into a Blu-ray. If you rip out the AC3 core, you are left with only the TrueHD portion. While doing some digging, I found an old posting:
So, if you have a MKV file that contains only AC3, because the TrueHD was thrown away, there is no way to get back the TrueHD.
As for mkvmerge's handling of TrueHD+AC3, I found the following:
Now comes the tricky part. If you've created a MKV file with a newer mkvmerge, so that you have both audio tracks, getting it back into the required Blu-ray spec is going to be tough. Why? Because the two audio tracks must be interleaved in a very special way. The first quote seems to imply that eac3to can be used to interleave the two streams into a single TrueHD+AC3 for Blu-ray use. I've never tried it.
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Yes, my friend... But, you are overthinking it... All I am saying is that when you have an MKV file that MediaInfo SHOWS has a TrueHD audio stream, that stream has had the core removed. So, simply by using UsEac3to (or eac3to) you can generate and add back in the AC3 core. I've done it many times.
This guy above says that when he tries to mux his MKV file into a playable Blu-ray, the resulting file is only the AC3 @640 part of it. I don't know the 'ins & outs' of it in detail, but quite a while ago I was having the exact same thing happen and I found threads (probably here) that explained how to use eac3to to add the 'core' back in so that TSMuxer can recognize and process it.
That's all...