Help a deaf guy with Audio synch problem

[SeeChestlickRun]

I just ripped Howls Moving Castle, and everything's fine, except for asynch, which is only 2 seconds off. I fixed it. (Or that's what I hope so)

But the real issue is that I'm deaf and there is no way for me to know if there is any asynch unless my family member or friends tell me so and it is pain in the butt trying to fix it myself. It is rather embarrassing having my little sister telling me that the movie is 'broken' when I hope it isn't.

I was just wondering if there is a way to prevent any asynch in future?

What I know so far that will affect asynch:

Copy Protected DVDs
Bad DVDs

That's all I can think up for now.

I have AnyDVD, to help me with Copy Protected DVDs.

Is there any program that help me visually compares sound and video to see if they're *almost* in synch.

Thanks for your reply.

[dat720]

I think your out of luck with a program that caters for deaf people to compare A/V sync visually, are you completly deaf? or have some hearing?

A guy i know has a little bit of hearing and gets by with this sort of stuff by using a head phone amp and a pair of really sensitive (really expensive) Bose Head Phones.

[SeeChestlickRun]

Completely deaf, although, I can crank up the volume all way up just to feel vibration, I doubt it my family will enjoy it. :)

I'm sure I've seen some program that will show 'spikes' of sound, as in sound wave. So if I could find those spike, i.e. door shut, gunshots, whatever, then I could kinda of match them to video, but then again...

I think I'm out of luck. I will look around a little more.

EDITED::

Actually, I think I've found something... VisualSubSync, Although I cannot change the audio delay. But I know how to now! Kinda. Almost.

I'm getting there.

Okay. This is what I do, if I *know* that the audio is out of synch, I just look it up on VisualSubSync and find the peak sound and try to match it with video, after figuring out how much delay is, I then use mkvmerge to adjust the delay and mux it again. Then I double check it with VisualSubSync again to make sure everything's fine.

My workaround for now.

Anyone else have great idea? :)

[TinTime]

I was just wondering if there is a way to prevent any asynch in future?

From what you've said it seems like you're ripping a DVD and then going from vob(s) to mkv in some way. How are you doing this?

The reason I ask is that, depending on how you do this, most av synch issues should get fixed en route from vob to mkv. If you demux audio with dgindex then it will report audio delays in the filenames which are then picked up automatically by mkvmerge gui. Alternatively if you demux with eac3to then it will correct any delay in the audio as it's demuxed. Using eac3to is my preferred method because if I demux and then remux the audio again for any reason then I know it will remain in synch with the video.

Apologies if you're already fixing reported audio offsets in some way and you just happen to have come across a funny DVD. I just thought it would be worth checking your method as I've found that eac3to corrects pretty much everything for me.

[SeeChestlickRun]

Yeah.

First, I rip dvd using DVD Decrypter with AnyDVD on background for copy protection eliminating.
Second, I use MeGUI to demux audio with dgindex. (Is also used to create .d2v for video encoding, of course)
Third, after encoding video, I remux the audio back in with MeGUI most of the time. (It autodetect the delay made by dgindex)

Usually if there is audio delay, I use mkvmerge gui to correct it.

Usually audio delay comes from ripping DVD. At least that's what I think...

[jeffy]

VideoReDo Plus shows the audio waveform with the resolution less than 2 seconds (= options named Single frame, 0.1/0.25/0.5/One Second) on its timeline. When set (View -> Set Thumbnail Parameters -> Thumbnail size, Large; you can also adjust the color of the audio waveform here), so called "large" thumbnails are 85px in height. You can download a trial version. It can also adjust the audio delay (Tools -> Adjust Audio -> Audio Sync). You cannot open AVI or MKVs with it, but you can open VOB files, TS files and MPG files.