taking audio from one movie to sync in a movie

[bigdaddykane]

this the issue im having i have a movie with good picture quality but bad audio so i found a movie with good audio but horrible picture so what im trying to do is sync good audio with good picture but mind you one movie plays at 25 fps and one at 24 frames per second and movie is longer than audio and they are both avis so does anyone have any suggestions on how to fix this problem or any guides here at video help they can direct me to it i looked but i didnt find anything on it also i manage to sync the first 4 mins but then it just goes off lol any help will be greatly appreciated best regards bigdaddykane .

[mats.hogberg]

Ireallythinkthetroubleyour'efacingisnotworththeout comeItwouldbeeasiertofindthemoviewithgoodsoundandv ideothantryingtofixthis.
/Mats

[jman98]

LOL! What an answer, Mats!

I do have to agree with Mats. I really don't think it's worth what it will take to do this, but then I value my spare time. Many people do not. There seems to be an endless number of people who think nothing of spending an entire weekend doing something like this "for free" rather than just spending $20 or whatever to just buy the stupid movie on DVD.

If you must do this, my suggestion would be to get a very good audio editor. I know that Cool Edit can do this. Audacity, which is free, might be able to. You'll need to know the EXACT time of the 24 fps movie. Demux the good soundtrack and open it in the audio editor of your choice. Then change the duration to match the exact time of the 24 fps video. This will also change the pitch. If the videos are identical in every way except for one being 24 fps and one being 25 fps, then you may be lucky and now have an audio file that will be in sync with the 24 fps video. If there are any changes at all (deleted scenes, different edits, etc.) you will NEVER be able to get it in sync.

[manono]

The answer could be as simple as slowing down the one or speeding up the other, perhaps with a delay adjustment for the audio. The AVI video can almost certainly be speeded up or slowed down quite easily using one of the Dub varients to adjust the framerate without reencoding. Try making it the same as the audio and then join them. Worth a try before having to go to more difficult processes which may or may not work given your level of competence.

So, extract the good audio from its AVI. Make the other AVI the same framerate as the one with the good audio. Replace the bad audio with the good audio. Adjust the delay if necessary. This solution is similar to the one proposed by jman98 except for the fact I'm suggesting working with the video where no reencoding is necessary, rather than with the audio. There's also a chance it won't work, for some of the same reasons he mentioned, but if it does work it's far and away the easiest method.

And if your video editing skills are at the same level as your writing skills, you may as well give up already.

[mats.hogberg]

The AVI video can almost certainly be speeded up or slowed down quite easily using one of the Dub varients to adjust the framerate without reencoding

Even easier with AVIFrate.

/Mats

[bigdaddykane]

thanks guys for your response but this a movie that a 20 dollar bill would not be able to fix as for my writing skills i do apologize i had worked for 16 hrs straight and then came home and tried to fix the movie with no results so i decided to ask here for help lmao.seeing that there is smarter people than i here as far as my skills well i have been encoding for many years now and i think they are pretty good. its always good to aquire knowledge. any links on how to use the audio editing softwares mentioned by jman here at video help?
i hope my spelling was better for you all lol thanks again

[bigdaddykane]

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[GTRBudda]

This can be done with Audacity (and a little math) without changing the pitch.

Load both the "bad" in sync audio and the "good" ort of sync audio (wav or mp3).
Find early on in the bad audio an easy to see event, a door close, footsteps, etc., and make a note of exactly when that event starts.. Now find the same event in the good audio and get it's start time.

Next, move toward the end of the tracks and do the same thing. After that, find the duration, in seconds.milliseconds form, of both tracks (end event's time minus start event's time) and divide the "in sync" by the "out of sync". Finally, multply this by the full duration of the out of sync track. This gives a new duration for the out of sync track that should correct for audio going out of sync over time.

To apply the new duration, select the entire out of sync track (click under the track name) and go to Effect -> Change Tempo. Enter the new duration at the bottom right, and hit ok. This may take quite a few minutes to finish. When it's done, use the dragging cursor, the "<->' button, to pull the good audio into sync with the bad. Audacity can magnify both verticaly and horizontaly to see where the audio events line up. A strait edge tool like J-Ruler can help with this too.

The start and end of the good audio probably don't line up with the bad audio. If the good ends fall "inside" the bad audio, select all the good audio, press and hold shift, select all the bad audio, de-select the good audio, and do Edit->Silence. If the good ends fall outside the the bad audio, do the same as above, but then with the cursor at zero, do Edit->Select->Start to Cursor, Edit->Delete, and Project->Align Tracks->Align with Zero to correct the start, and at the "good" end, trim off any excess audio.

Sorryif this is a little long winded. I get carried away...

[jman98]

monono's suggestion is easier, but it does have drawbacks. Changing the video framerate may cause movement to look unnatural. That may be unacceptable. Although the original poster said nothing about converting the AVI to DVD format, should he want to do this changing the framerate on the AVI may lead to poor results on a conversion to DVD. However, if he has no plans for such, then this might be a decent choice.

The Audacity website has documentation. You're kind of on your own with other editors.

[bigdaddykane]

thanks gtrbudda and jman98 im leaving it as an avi not converting to dvd . ill give it a go i manage to insync the movie by splicing it to pieces with vdub. but i didnt like it because you can notice where its been split when viewing.no fluid motion it kinda repeats the same splice lol. thanks you all for the responses.