Hi folks,
I have racked my brain out and searched till there is no tomorrow ... I am sure someone herer can help ...
Here is my problem ... I have 2 MP4 files of the same video (I also have them in MKV format using MKVToolnix) ...
Source 1: is Video in English, 29.970 fps, 4:3 Aspect Ratio, 1Hour & 31 Minutes long.
Source 2: is Video in Italian, 25 fps, 16:9 Aspect Ratio, 1Hour & 28 Minutes long.
I want to use the Video from Source 2 and the Audio from Source 1 and have it SYNC.
Q: Can it be done and how?
Thanks,
G!![]()
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You CAN'T. Not without modifying & re-encoding (either the V or the A). And even then, you might not be lucky.
Doesn't look like you searched too much as there are tons of posts on this subject.
You likely need to do an audio Time Stretch. This assumes that both your programs are IDENTICAL, not counting the duration. That is actually a REALLY BIG ASSUMPTION (and not a safe one, based on most experiences).
Lots of NTSC vs. PAL titles have different edits, the cadence may not be maintained throughout (pulldown?),...
All DAWs and most standard Audio editors can do an audio TimeStretch (there are a number of different names for this process).
Scott -
Assuming the video is exactly the same and the only difference is the frame rate, which to be honest given one is 16:9 and 25fps while the other is 29.970fos and 4:3 it likely won't be, you need to re-encode one while speeding it up or slowing it down to match the other. Then they'll either sync or they won't. The re-encoding option is generally called PAL speedup or PAL Slowdown. This eac3To GUI will do it. It mainly dedicated to audio conversion. eac3to also needs to be installed. http://www.afterdawn.com/software/audio_video/convert_audio/eac3to_conversion_utility.cfm
Alternatively MeGUI has speedup and slowdown options when setting up it's audio encoders. -
Hi Cornucopia & hello_hello,
Thanks both for your feedbacks and loads of info.
@ Cornucopia, I actually did look and searched a lot ... but I was gooogling the Wrong Search item ... so, now that you two have provided me with some additional info ... then I can ask gooogle the "Correct" question.
This sounds like an interesting project but time-consuming ... but will expand my Video knowledge ... so I will play around with it.
But meanwhile I think I might just opt for an English Subtitle, I found some but they are way out of Sync ... I have edit the times by hand line by line and go thru the entire darn movie ...an hour and half ... so that is a task on it's own ... but at least I know how to work it.
Again Thank You Kindly for your helps fellows!
G! -
If you use the Eac3to GUI I linked to, it's really just a matter of opening the audio, selecting the appropriate speedup/slowdown option and converting it. Extract the audio you want to convert from the MKV first using MKVCleaver, then exchange it for the original audio using MKVMergeGUI. Famous last words, I know, but it shouldn't be much of a project as such. It shouldn't take long at all. The converted audio will either sync or it won't. At worst you may have to apply an appropriate audio delay when remuxing.
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Hi hello_hello,
Thanks for the additional pointers. I tried your directions ... and the darn thing is just too whacky ... so, I just watched the FS version English-Dubbed and called it quits.
Thanks again!
G!
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