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I'm trying to work on syncing the English audio for two of these shows: Wunschpunsch and Three Delivery.
I'm not good expert on syncing them losslessly. MKVToolNix isn't the job. Any tools to trim some stuff and syncing the audio losslessly, anyone?
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What about avi demux or handbrake? They allow you to increase or retard audio synch.
I had wolf warrior 2 and the audio was off, I managed to figure out how much by focusing on one part and retarding it, was off by 2 seconds, used VLC to figure it out, then used avidemux to fix it, removed the chinese audio (started with a 7GB file) and ended up with a 5GB file, dunno if any of this helps or not. -
The problem with handbrake at least (and I assume avi demux as well) is that they cannot do it losslessly with lossy audio, they can only re-encode it - which leads to quality loss. Akai-Shuichi has the right method, by finding delays and using DelayCut to chop up the audio into multiple files and stringing them back together with eac3to. It's a bit tedious but it retains quality.
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It's very hard for me to do DelayCut nor eac3to. I just use Vegas to sync it, not losslessly.