Avidemux and mkvmerge generates .MKV files with different timecodes !?

[vishnu-krishna]

Hi, i'm a total newbie in video editing, so need your advice.
I want to pack a single .vob file into mkv container and im trying to do this using avidemux 2.6.8 and mkvmerge 7.6.0.
- mkvmerge generates 'bad' .mkv with noticeable A/V sync issue.
- avidemux does it without A/V being out of sync, but for some reason it indicates the time of 1st frame of input .vob = 500ms, and output .mkv = 520ms.
So now i have 2 mkv files generated by avidemux and mkvmerge from 1 source .vob-file. If i extract a/v timecodes of these mkv files with MKVcleaver 0.6.0.6, then the numbers inside the .txt-file of 'normal' mkv timecode will be significantly different from numbers representing timecode of 'bad' mkv with sync issues. Avidemux adds a constant time lag = 500ms and variable amount of mseconds throughout timeline but this magically leads to desireable result.
So, does all that mean, that mkvmerge and avidemux uses different processing algorythms/works in completely different ways? I would be satisfied with avidemux, but i wonder why does it add 500ms lag and is there any chance that this lag can have a negative effect after changing video player (current is VLC), OS (current = win8.1)?

B.T.W, whats interesting with avidemux, is if i extract .ac3 from input .vob and then select this track as desired audio for output .mkv and then try to actually generate .mkv, then i get audio out of sync on 500ms ahead of video. If i just generate .mkv from .vob without 'changing' audio track, then everything will be fine.

Timecodes in attachement...

[Baldrick]

If you have the complete dvd/videots folder use MakaMkv.

[Baldrick]

If you have the complete dvd/videots folder use MakeMkv.

[vishnu-krishna]

Thanks for your reply, Baldrick!
Output generated by MakeMKv has audio out of sync. Seems that this software has only detected problems, but didnt correct them...
Here is MakeMKv log:

MakeMKV v1.9.1 win(x64-release) started
Debug logging enabled, log will be saved as C:\Users\vishnu-krishna/MakeMKV_log.txt
Opening files on harddrive at C:/Users/vishnu-krishna/Videos/my_archives/10.0/VIDEO_TS
Calculated BUP offset for VTS #0 does not match one in IFO header.
Calculated BUP offset for VTS #1 does not match one in IFO header.
Titleset start sector mismatch for titleset 1 : 70 != 912
Title #1 was added (64 cell(s), 1:03:17)
Operation successfully completed
Saving 1 titles into directory C:/Users/vishnu-krishna/Videos/my_archives
AV synchronization issues were found in file 'C:/Users/vishnu-krishna/Videos/my_archives/title00.mkv' (title #1)
AV sync issue in stream 0 at 0:00:04.320 : video frame timecode differs by +40ms
AV sync issue in stream 0 at 0:00:04.800 : video frame timecode differs by +80ms
AV sync issue in stream 0 at 0:20:26.400 : video frame timecode differs by +320ms
AV sync issue in stream 0 at 0:20:26.880 : video frame timecode differs by +480ms
AV sync issue in stream 0 at 0:20:40.800 : video frame timecode differs by +520ms
AV sync issue in stream 0 at 0:22:09.120 : video frame timecode differs by +560ms
AV sync issue in stream 0 at 0:49:09.120 : video frame timecode differs by +600ms
AV sync issue in stream 0 at 0:49:12.480 : video frame timecode differs by +800ms
AV sync issue in stream 0 at 0:49:12.960 : video frame timecode differs by +1280ms
AV sync issue in stream 0 at 0:49:13.440 : video frame timecode differs by +1360ms
AV sync issue in stream 0 at 0:49:13.440 : too many video frames with invalid timecodes, future messages will be suppressed
AV sync issue in stream 0 at 0:49:13.920 : too many video frames with invalid timecodes, future messages will be suppressed
AV sync issue in stream 0 at 1:03:17.280 : video stream has 7902 frames with invalid timecodes
1 titles saved