how to correct out of sync video/audio in mkv file

[jagabo]

You cannot remux with less ReFrames (remuxing is simply taking the video out of one container and putting it in another, without decompressing or recompressing the video). You have to reencode. Mediacoder can reencode with whatever settings you want.

[55trucker]

^Thx for that piece of info. So I'm on the right track here, Mediacoder will reencode giving me what I'm hoping it will do, a fresh file that has a lower reframes rate.

[55trucker]

Well, my patience has not paid off. After letting mediacoder run for approx 48 hrs to reencode the file it has been a waste. I guess this is a lost cause. Mediacoder did output the video at 3 reframes but now the video is not only out of sync with the audio but extremely slow in speed.

[dylz]

Have you tried playing it in a program that uses internal codecs like VLC,avidemux,virtualdubmod? if it plays correctly then it's your codecs.

[55trucker]

VLC for some reason has a complete heart attack when trying to play anything that is either 720p or 1080p on my system.
Anything that is basic vob or just audio it handles without any errors. I've used it for such files for years. I've heard that I'm not alone when it comes to VLC's fussy nature when handling HD files, makes me wonder what the program needs in particular to be able to play these hd files without issue.
I've not made use of either avidemux or virtualdubmod to see if they can play it.

[dylz]

use mp-hc http://mpc-hc.sourceforge.net/ and post me a minute sample, what do you play the movie on ... wmp? if so do you have haali splitter + ffdshow installed?

also in mediainfo is there a delay set under video or audio in text or tree view if so you need to add that delay back when muxing in mkvtoolnix and make sure there framrate is the same as the first file.

[55trucker]

I think that I'm getting closer to my problem source. It is in the video. There is a problem with the timecode tracking. I did another reencode of just the video of this file with Mediacoder into an mkv container, when I play the file I can see that the time counter in the systray is not counting off smoothly. Altho what I see on the screen appears to be smooth & at the proper speed the time counter tells me otherwise. I don't know what would cause this, after doing this reencode I also remuxed & played just the video back (from the original file I have) and it does the same thing. So reencoding the video to solve the high reframes can't seem to cure this situation which I did not see until I separated the video from the audio. The audio timecounter of the file was hiding this irregularity. Any thoughts?

[55trucker]

Well, after walking away from my problem for while and looking after other things I came back to it and started all over. Taking the original file of the movie I had I ran it thru Mediacoder once again. This time I included the audio (as the first time I re-encoded just the video h.264 file and the result had timecode errors ) and the program realigned the poor refames to a proper 3 reframes, and output the file as an mkv file. I turned off the audio re-encode during the process as mediacoder still doesn't recognize DTS audio and will not re-encode it. Mediacoder output a clean video only file in an mkv container. I then remuxed that file using mkvmerge adding in the original DTS audio to the final file and it plays cleanly. Finally.
I wanted to thank all of you who pointed me in the right direction as to how to clean up this miscoded file that I had here. Now that I know what to look for where errors are concerned I can troubleshoot the same in the future.
Thx again.