@nhong-xiong Try selecting both audio tracks & right click Align ,,.

tried it, it threw them outta alignment even more!? does it make a difference if it is a Mp4 file (both are) vs mp3 file?

converted them both into MP3s, still can't line them up perfectly. FYI the audio tracks are NOT identical, 1 has vocals, the other is stripped of the vocals. other than that they're identical.

@nhong-xiong Sorry, I use a different editor most of the time that allows you to slip the audio wherever you want on the timeline, it doesn't lock to each frame so fine adjustment is possible, but Magix seems to be locked to the frames/grid, it's either one side or the other as you've found out.

There's people on here with more Magix audio experience than me, I'm sure one of them will be able to suggest something, there might be a way around this locking that I'm not aware of or forgotten.

PS. if the two files are different as you suggest, mp4 & mp3 there's a very good chance they won't sync perfectly, one part might sync but another part won't. Even two mp4's as you've found won't sync, esp if they're created at different times &/or copies of other formats just like your conversion from mp3 to mp4, that's because they have different properties. It's not impossible to sync the audio but some files will take more work than others & as I said I'm not sure if Magix has the necessary features. I could well be wrong...

@nhong-xiong @Gid

It will make no difference. Precise alignment of audio to the millisecond is just not possible with MMS/VDL/MEP.

Because of the way audio is handled in that program, any adjustment will happen as a jump of at least one frame. The faster the frame rate, the smaller the jumps will be but the tracks may still not align 100%.

For that you would need to upgrade to Video Pro X which does allow such alignment.

Try placing a track marker to the two tracks at the same position and then try moving one track to see what I mean.

One of the reasons for this behaviour I suspect is most people would not need this or have the capacity to correctly align such signals working at such a magnified view. Especially if trying to sync speech to mouth movements or things like finger stumming a guitar or matching hits of drumsticks to the visuals.

One way around this would be to make sure the beginning of any audio clip used in a given project should have exactly identical amounts of silence at the start of each audio clip to be inserted, but that would be a very hard thing to achieve and the amount of silence needed may have to vary to take into account the frame rate in use.

Ray.

interesting since you mentioned frame rates, the max (found out) is 500fps. and it DOES allow a more adjustable match, very close, much closer than it was at 60fps. I reduced it to 250fps (still close), we'll see what it does to the resulting video & file size.