[Help] Trying to sync Little Mermaid Limited Edition DVD 5.1 to 4K

[Warm Gun]

I have the Limited Edition DVD whose 5.1 supposedly is based on the 70 mm theatrical audio. Reaper treats it as stereo, leaving the center channel for example silent. I can hear Ariel's echo as she sings, but not her voice. The guides I'm watching appear to be about creating your own 5.1 audio. 



I followed one guide up to this point, parent channels 6, track channels 6, but don't hear anything now. The program seems to work natively in stereo.

Audacity seems much more complicated, showing all the channels as separate tracks. I'm daunted from even adding the 4K Dolby Digital track and matching them up. 

Is there anything simpler you can recommend, or can anyone with some experience in Reaper explain to me what I'm doing wrong? I've done a few syncs, but they were all mono/2.0 mono.

[bendermac]

Sync by video. Much easier

[Warm Gun]

Sync by video. Much easier

With what?

[Warm Gun]

It's not something I can sync with a delay in MKVToolNix. There are minor differences throughout.

[bendermac]

Sync by video. Much easier

With what?

The DVD video to 4K video

[Warm Gun]

I meant with what program.

Anyway, I think I did it. By comparing the graphs in Reaper with the video and splitting over and over and setting delays in MKVToolNix. About four splits. More complicated than what I'm used to, but at least I didn't have to re-encode the audio this way. Will watch it tonight to make sure.

[Warm Gun]

But my first delay broke the Disney intro. It's frozen. Oh well, will just trim it off completely, the 33 seconds, since it's not the original anyway.

[Warm Gun]

Fixed the Disney intro by adding a 33.575 second silence in DelayCut. I thought that wouldn't work, because the delays were in the MKV container as metadata, but it looks like MKVToolNix baked them into the AC3 file within. I would have added an intro with the new fanfare, but I don't know how to create an encode of it in the specific format of the Limited Issue DVD, "5.1(side)."

ac3, 48000 Hz, 5.1(side), 384 kb/s

[Doctor M]

Editing AC3 audio, I always use Womble MPEG Video Wizard. If you don't change the channels/bitrate, it doesn't re-encode. So in this case, only the intro would be re-encoded and the rest untouched.

[Warm Gun]

Oh, the 5.1(side) doesn't mean anything. All my videos are saying that after reinstalling Windows and MPC-HC. Eh, don't know if it's worth fixing now. Tried, but the new audio file is two seconds longer for some reason. I think I like the new Disney fanfare better muted anyway.