Easy way to correct audio and video sync issues

indierocker85

Hi everybody

I have paid for a Winx DVD ripper software to gradually digitise our DVD collection. I realise we live in a world of streaming services and such these days, however a lot of content is frequently deleted from the likes of Netflix, and some of our dvds are unavailable on streaming services. We are basically then putting them onto a USB HDD and plugging them into the USB on the smart TV. However, unfortunately a few of the files have audio sync issues. Some are a few seconds out, where others are slightly less, but still noticeable. I have a basic version of Cyberlink Power director 12, but that's it. I have opened some of the files in VLC media player on my PC and used the track synchronisation feature and the audio is maybe 0.2secs delayed. How can I fix it so the audio is O.K for these files and so I can then save them, with no audio problem? I have a fair few I have done, and one in particular is proving very difficult indeed. Thanks for any help in advance

Gillor

Try Avidemux which you can download directly from Git Hub...
https://github.com/mean00/avidemux2/releases/tag/2.8.0
From the list of releases select version avidemux_2.8.0_win64.exe

Neil_Jones

indierocker85 said:

Hi everybody

I have paid for a Winx DVD ripper software to gradually digitise our DVD collection. I realise we live in a world of streaming services and such these days, however a lot of content is frequently deleted from the likes of Netflix, and some of our dvds are unavailable on streaming services. We are basically then putting them onto a USB HDD and plugging them into the USB on the smart TV. However, unfortunately a few of the files have audio sync issues. Some are a few seconds out, where others are slightly less, but still noticeable. I have a basic version of Cyberlink Power director 12, but that's it. I have opened some of the files in VLC media player on my PC and used the track synchronisation feature and the audio is maybe 0.2secs delayed. How can I fix it so the audio is O.K for these files and so I can then save them, with no audio problem? I have a fair few I have done, and one in particular is proving very difficult indeed. Thanks for any help in advance

I don't what you bought that software for, when MakeMKV would have done the exact same job for nothing, audio and all and it is a free piece of software (while in "beta", but its been in beta for a long while)

That aside, this sort of audio sync is usually because you've done the video from VFR - variable frame rate.  But there is no such thing as variable audio rate, because that would leave a hole in the audio and be very noticeable.  You can drop the frame rate down quite significantly on visual, but audio you can't, as you can hear the edit.

MakeMKV would have been a direct copy of the files/stream on the disk, so if it was out on the original it would be out on the ripped copy too.  However this is quite unlikely for a commercial disk (of if it is, it wouldn't be as large as 0.2 seconds).

indierocker85

Gillor said:

Try Avidemux which you can download directly from Git Hub...
https://github.com/mean00/avidemux2/releases/tag/2.8.0
From the list of releases select version avidemux_2.8.0_win64.exe

Thank you 

I tried this one, but it still couldn't synchronise as it only allows in 1ms increments and I think it's too little or too much

outtatune

indierocker85 said:

Gillor said:

Try Avidemux which you can download directly from Git Hub...
https://github.com/mean00/avidemux2/releases/tag/2.8.0
From the list of releases select version avidemux_2.8.0_win64.exe

Thank you 

I tried this one, but it still couldn't synchronise as it only allows in 1ms increments and I think it's too little or too much

Fixing audio sync issues is a miserable task. You'll lose way less of your remaining sanity by going back and reripping the DVDs properly using MakeMVK

http://makemkv.com/

Gillor

MakeMKV makes an excellent job of DVD copying but only does it in an MKV wrapper format as far as I recall.

If the OP’s objective is to make DVD copies to a USB stick and play the resulting “conversion” through a television this could be problematic as many TVs have difficulty handling the MKV format (not sure about the latest models).

So then you are looking at an extra process, such as Handbrake, to convert the MKV copy into a TV-friendly format like m4v. 

But if this solves the synchronisation problem it may be the way to go.

Incidentally, I think it is possible to correct out of sync audio/video with Handbrake but I can’t say how easy/effective it is as I’ve never used Handbrake for this.

Neil_Jones

I'd argue if the TV has USB ports it can play media from then it'll be able to play MKV files and it's probably been standard since about 2017 (the file format itself dates from 2002)

An MKV file is basically just a wrapper, not a video/audio file format in itself, and that wrapper can hold multiple videos/audio tracks (so for DVDs for example you rip it with MakeMKV and the resulting file you get holds the the language dubs, the audio commentary (if present), the main audio, etc, all in the one file), so all the TV has do to is play the right "tracks" if you like.

Gillor

My Panasonic and my sons Sony both have USB ports but neither recognise MKV wrappers/formats/ files so I speak from experience.

That's not to say all TVs will react in the same way, hence my  statement... "...(playing) the resulting “conversion” through a television could be problematic as many TVs have difficulty handling the MKV format (not sure about the latest models)."

Norman_Castle

Wouldn't binning the boxes to reduce the storage size and just keeping the discs and a dvd player be simpler?

outtatune

Gillor said:

My Panasonic and my sons Sony both have USB ports but neither recognise MKV wrappers/formats/ files so I speak from experience.

That's not to say all TVs will react in the same way, hence my  statement... "...(playing) the resulting “conversion” through a television could be problematic as many TVs have difficulty handling the MKV format (not sure about the latest models)."

I thing Staxrip can export to mp4. Which again is a wrapper but if OP's TV doesn't like .mkv wrappers might be a better fit.